./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/memset_using_uint64_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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:24:02,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:24:02,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:24:02,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:24:02,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:24:02,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:24:02,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:24:02,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:24:02,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:24:02,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:24:02,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:24:02,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:24:02,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:24:02,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:24:02,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:24:02,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:24:02,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:24:02,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:24:02,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:24:02,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:24:02,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:24:02,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:24:02,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:24:02,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:24:02,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:24:02,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:24:02,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:24:02,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:24:02,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:24:02,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:24:02,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:24:02,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:24:02,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:24:02,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:24:02,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:24:02,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:24:02,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:24:02,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:24:02,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:24:02,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:24:02,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:24:02,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:24:02,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:24:02,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:24:02,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:24:02,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:24:02,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:24:02,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:24:02,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:24:02,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:24:02,779 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:24:02,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:24:02,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:24:02,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:24:02,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:24:02,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:24:02,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:24:02,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:24:02,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:24:02,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:24:02,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:24:02,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:24:02,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:24:02,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:24:02,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:24:02,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:24:02,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:24:02,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:24:02,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:24:02,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:24:02,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:24:02,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:24:02,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:24:02,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2021-12-18 01:24:03,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:24:03,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:24:03,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:24:03,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:24:03,022 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:24:03,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-12-18 01:24:03,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec357569/308844bf60724265bcc4cfbd5457e855/FLAG659e63d23 [2021-12-18 01:24:03,584 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:24:03,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-12-18 01:24:03,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec357569/308844bf60724265bcc4cfbd5457e855/FLAG659e63d23 [2021-12-18 01:24:03,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec357569/308844bf60724265bcc4cfbd5457e855 [2021-12-18 01:24:03,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:24:03,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:24:03,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:24:03,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:24:03,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:24:03,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:24:03" (1/1) ... [2021-12-18 01:24:03,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a4f446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:03, skipping insertion in model container [2021-12-18 01:24:03,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:24:03" (1/1) ... [2021-12-18 01:24:03,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:24:03,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:24:04,120 WARN L230 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/memset_using_uint64_harness.i[4493,4506] [2021-12-18 01:24:04,124 WARN L230 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/memset_using_uint64_harness.i[4553,4566] [2021-12-18 01:24:04,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,514 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,616 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:24:04,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:24:04,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:24:04,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:24:04,619 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:24:04,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:24:04,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:24:04,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:24:04,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:24:04,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:24:04,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:24:04,664 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:24:04,688 WARN L230 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/memset_using_uint64_harness.i[4493,4506] [2021-12-18 01:24:04,689 WARN L230 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/memset_using_uint64_harness.i[4553,4566] [2021-12-18 01:24:04,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:24:04,783 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:24:04,786 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:24:04,787 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:24:04,788 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:24:04,788 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:24:04,789 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:24:04,790 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:24:04,790 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:24:04,791 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:24:04,791 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:24:04,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:24:04,912 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:24:04,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04 WrapperNode [2021-12-18 01:24:04,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:24:04,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:24:04,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:24:04,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:24:04,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:04,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:04,996 INFO L137 Inliner]: procedures = 592, calls = 625, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 123 [2021-12-18 01:24:05,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:24:05,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:24:05,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:24:05,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:24:05,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:24:05,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:24:05,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:24:05,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:24:05,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (1/1) ... [2021-12-18 01:24:05,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:24:05,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:05,087 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) [2021-12-18 01:24:05,117 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 [2021-12-18 01:24:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:24:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:24:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:24:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:24:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:24:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:24:05,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:24:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:24:05,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:24:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:24:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-18 01:24:05,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-18 01:24:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 01:24:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 01:24:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:24:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:24:05,316 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:24:05,317 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:24:05,627 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:24:05,635 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:24:05,635 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 01:24:05,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:24:05 BoogieIcfgContainer [2021-12-18 01:24:05,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:24:05,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:24:05,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:24:05,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:24:05,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:24:03" (1/3) ... [2021-12-18 01:24:05,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191d9306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:24:05, skipping insertion in model container [2021-12-18 01:24:05,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:24:04" (2/3) ... [2021-12-18 01:24:05,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191d9306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:24:05, skipping insertion in model container [2021-12-18 01:24:05,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:24:05" (3/3) ... [2021-12-18 01:24:05,646 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2021-12-18 01:24:05,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:24:05,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:24:05,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:24:05,705 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 [2021-12-18 01:24:05,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:24:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-18 01:24:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 01:24:05,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:05,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:05,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:05,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1569633619, now seen corresponding path program 1 times [2021-12-18 01:24:05,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:05,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709705953] [2021-12-18 01:24:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:05,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 01:24:06,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:06,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709705953] [2021-12-18 01:24:06,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709705953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:06,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:06,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 01:24:06,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948094350] [2021-12-18 01:24:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:06,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 01:24:06,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:06,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 01:24:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:24:06,214 INFO L87 Difference]: Start difference. First operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 01:24:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:06,232 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2021-12-18 01:24:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 01:24:06,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-12-18 01:24:06,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:06,239 INFO L225 Difference]: With dead ends: 137 [2021-12-18 01:24:06,239 INFO L226 Difference]: Without dead ends: 62 [2021-12-18 01:24:06,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:24:06,244 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:06,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:24:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-18 01:24:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-18 01:24:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-18 01:24:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2021-12-18 01:24:06,270 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 45 [2021-12-18 01:24:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:06,272 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2021-12-18 01:24:06,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 01:24:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2021-12-18 01:24:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 01:24:06,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:06,273 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:06,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:24:06,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:06,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1695278887, now seen corresponding path program 1 times [2021-12-18 01:24:06,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:06,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328148623] [2021-12-18 01:24:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:06,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 01:24:06,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:06,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328148623] [2021-12-18 01:24:06,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328148623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:06,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:06,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:24:06,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045045927] [2021-12-18 01:24:06,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:06,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:24:06,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:24:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:24:06,422 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 01:24:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:06,480 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2021-12-18 01:24:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:24:06,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-12-18 01:24:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:06,482 INFO L225 Difference]: With dead ends: 122 [2021-12-18 01:24:06,482 INFO L226 Difference]: Without dead ends: 75 [2021-12-18 01:24:06,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:24:06,484 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:06,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:24:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-18 01:24:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-12-18 01:24:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 60 states have internal predecessors, (72), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-18 01:24:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-12-18 01:24:06,491 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 45 [2021-12-18 01:24:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:06,491 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-12-18 01:24:06,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 01:24:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-12-18 01:24:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 01:24:06,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:06,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:06,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 01:24:06,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:06,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash -910744667, now seen corresponding path program 1 times [2021-12-18 01:24:06,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:06,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627780550] [2021-12-18 01:24:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:06,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 01:24:06,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:06,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627780550] [2021-12-18 01:24:06,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627780550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:06,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:06,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:24:06,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497936983] [2021-12-18 01:24:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:06,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:24:06,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:24:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:24:06,783 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-18 01:24:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:06,953 INFO L93 Difference]: Finished difference Result 154 states and 192 transitions. [2021-12-18 01:24:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:24:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-18 01:24:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:06,955 INFO L225 Difference]: With dead ends: 154 [2021-12-18 01:24:06,955 INFO L226 Difference]: Without dead ends: 119 [2021-12-18 01:24:06,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:24:06,956 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 134 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:06,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 352 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:24:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-18 01:24:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2021-12-18 01:24:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 92 states have internal predecessors, (111), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-18 01:24:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2021-12-18 01:24:06,967 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 45 [2021-12-18 01:24:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:06,967 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2021-12-18 01:24:06,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-18 01:24:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2021-12-18 01:24:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 01:24:06,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:06,969 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:06,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 01:24:06,969 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash -230686297, now seen corresponding path program 1 times [2021-12-18 01:24:06,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:06,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200249200] [2021-12-18 01:24:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:06,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 01:24:07,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:07,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200249200] [2021-12-18 01:24:07,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200249200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:07,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:07,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:24:07,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4559405] [2021-12-18 01:24:07,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:07,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:24:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:24:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:24:07,194 INFO L87 Difference]: Start difference. First operand 107 states and 133 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 01:24:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:07,282 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2021-12-18 01:24:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:24:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-12-18 01:24:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:07,284 INFO L225 Difference]: With dead ends: 113 [2021-12-18 01:24:07,284 INFO L226 Difference]: Without dead ends: 111 [2021-12-18 01:24:07,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:24:07,285 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:07,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 301 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:24:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-18 01:24:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-12-18 01:24:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 95 states have internal predecessors, (114), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-18 01:24:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2021-12-18 01:24:07,293 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 45 [2021-12-18 01:24:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:07,293 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2021-12-18 01:24:07,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 01:24:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2021-12-18 01:24:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-18 01:24:07,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:07,295 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:07,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 01:24:07,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1317632952, now seen corresponding path program 1 times [2021-12-18 01:24:07,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:07,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173839285] [2021-12-18 01:24:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:07,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:24:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:24:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 01:24:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-18 01:24:07,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:07,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173839285] [2021-12-18 01:24:07,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173839285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:07,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:07,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:24:07,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989398125] [2021-12-18 01:24:07,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:07,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:24:07,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:24:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:24:07,497 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-18 01:24:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:07,553 INFO L93 Difference]: Finished difference Result 145 states and 174 transitions. [2021-12-18 01:24:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:24:07,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2021-12-18 01:24:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:07,555 INFO L225 Difference]: With dead ends: 145 [2021-12-18 01:24:07,555 INFO L226 Difference]: Without dead ends: 117 [2021-12-18 01:24:07,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:24:07,556 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 86 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:07,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 243 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:24:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-18 01:24:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-12-18 01:24:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 98 states have internal predecessors, (117), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-18 01:24:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2021-12-18 01:24:07,564 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 141 transitions. Word has length 62 [2021-12-18 01:24:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:07,564 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-12-18 01:24:07,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-18 01:24:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 141 transitions. [2021-12-18 01:24:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-18 01:24:07,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:07,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:07,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 01:24:07,566 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash -983473925, now seen corresponding path program 1 times [2021-12-18 01:24:07,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:07,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829890083] [2021-12-18 01:24:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:07,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 01:24:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:24:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 01:24:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:24:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-18 01:24:07,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:07,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829890083] [2021-12-18 01:24:07,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829890083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:07,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:07,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:24:07,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286900303] [2021-12-18 01:24:07,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:07,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:24:07,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:24:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:24:07,671 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 01:24:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:07,683 INFO L93 Difference]: Finished difference Result 187 states and 227 transitions. [2021-12-18 01:24:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:24:07,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2021-12-18 01:24:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:07,684 INFO L225 Difference]: With dead ends: 187 [2021-12-18 01:24:07,685 INFO L226 Difference]: Without dead ends: 117 [2021-12-18 01:24:07,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:24:07,686 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:07,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 152 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:24:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-18 01:24:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-12-18 01:24:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 99 states have internal predecessors, (118), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-18 01:24:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2021-12-18 01:24:07,693 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 63 [2021-12-18 01:24:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:07,693 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2021-12-18 01:24:07,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 01:24:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2021-12-18 01:24:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-18 01:24:07,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:07,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:07,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 01:24:07,695 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash -437678531, now seen corresponding path program 1 times [2021-12-18 01:24:07,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:07,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732445239] [2021-12-18 01:24:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:07,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:24:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 01:24:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 01:24:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-18 01:24:07,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:07,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732445239] [2021-12-18 01:24:07,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732445239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:07,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:07,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 01:24:07,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798139051] [2021-12-18 01:24:07,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:07,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:24:07,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:24:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 01:24:07,860 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-18 01:24:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:07,915 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2021-12-18 01:24:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:24:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 66 [2021-12-18 01:24:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:07,916 INFO L225 Difference]: With dead ends: 138 [2021-12-18 01:24:07,916 INFO L226 Difference]: Without dead ends: 79 [2021-12-18 01:24:07,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:24:07,917 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 53 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:07,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:24:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-18 01:24:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-12-18 01:24:07,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-18 01:24:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-12-18 01:24:07,922 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 66 [2021-12-18 01:24:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:07,923 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-12-18 01:24:07,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-18 01:24:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2021-12-18 01:24:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 01:24:07,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:07,924 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:07,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 01:24:07,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash 168968953, now seen corresponding path program 1 times [2021-12-18 01:24:07,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:07,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775545127] [2021-12-18 01:24:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:07,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 01:24:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 01:24:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 01:24:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:24:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-18 01:24:08,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:08,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775545127] [2021-12-18 01:24:08,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775545127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:24:08,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:24:08,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:24:08,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128690640] [2021-12-18 01:24:08,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:24:08,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:24:08,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:24:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:24:08,064 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 01:24:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:08,128 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2021-12-18 01:24:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:24:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2021-12-18 01:24:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:08,129 INFO L225 Difference]: With dead ends: 131 [2021-12-18 01:24:08,129 INFO L226 Difference]: Without dead ends: 95 [2021-12-18 01:24:08,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:24:08,130 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 13 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:08,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 179 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:24:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-18 01:24:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2021-12-18 01:24:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-18 01:24:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-12-18 01:24:08,147 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 65 [2021-12-18 01:24:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:08,147 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-12-18 01:24:08,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 01:24:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-12-18 01:24:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 01:24:08,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:08,148 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:08,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 01:24:08,149 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash 231008567, now seen corresponding path program 1 times [2021-12-18 01:24:08,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:08,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171291201] [2021-12-18 01:24:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:08,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:24:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 01:24:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 01:24:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 01:24:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:24:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 01:24:10,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:10,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171291201] [2021-12-18 01:24:10,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171291201] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:10,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410984743] [2021-12-18 01:24:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:10,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:24:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:10,272 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) [2021-12-18 01:24:10,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 01:24:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:10,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-18 01:24:10,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:11,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2021-12-18 01:24:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:11,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-12-18 01:24:11,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2021-12-18 01:24:12,158 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:12,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44 [2021-12-18 01:24:12,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-18 01:24:12,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-18 01:24:12,330 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:12,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2021-12-18 01:24:12,432 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:12,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2021-12-18 01:24:12,535 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:12,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2021-12-18 01:24:12,644 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:12,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2021-12-18 01:24:12,750 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 01:24:12,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2021-12-18 01:24:12,928 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 01:24:12,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-12-18 01:24:13,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:13,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:13,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 01:24:13,971 INFO L354 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2021-12-18 01:24:13,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 167 treesize of output 110 [2021-12-18 01:24:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 01:24:14,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15