./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 11:46:25,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 11:46:25,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 11:46:25,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 11:46:25,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 11:46:25,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 11:46:25,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 11:46:25,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 11:46:25,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 11:46:25,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 11:46:25,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 11:46:25,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 11:46:25,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 11:46:25,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 11:46:25,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 11:46:25,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 11:46:25,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 11:46:25,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 11:46:25,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 11:46:25,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 11:46:25,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 11:46:25,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 11:46:25,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 11:46:25,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 11:46:25,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 11:46:25,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 11:46:25,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 11:46:25,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 11:46:25,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 11:46:25,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 11:46:25,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 11:46:25,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 11:46:25,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 11:46:25,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 11:46:25,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 11:46:25,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 11:46:25,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 11:46:25,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 11:46:25,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 11:46:25,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 11:46:25,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 11:46:25,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 11:46:25,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 11:46:25,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 11:46:25,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 11:46:25,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 11:46:25,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 11:46:25,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 11:46:25,836 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 11:46:25,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 11:46:25,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 11:46:25,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 11:46:25,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 11:46:25,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 11:46:25,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 11:46:25,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 11:46:25,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 11:46:25,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 11:46:25,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 11:46:25,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 11:46:25,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 11:46:25,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:25,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 11:46:25,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 11:46:25,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 11:46:25,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 11:46:25,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 11:46:25,839 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 11:46:25,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 11:46:25,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 11:46:25,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 11:46:25,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-05 11:46:26,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 11:46:26,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 11:46:26,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 11:46:26,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 11:46:26,120 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 11:46:26,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-05 11:46:26,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71ed6a11/25b5c484028e4f0d9ef60a9d353ee19e/FLAGe168b0e4e [2021-11-05 11:46:26,720 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 11:46:26,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-05 11:46:26,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71ed6a11/25b5c484028e4f0d9ef60a9d353ee19e/FLAGe168b0e4e [2021-11-05 11:46:26,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71ed6a11/25b5c484028e4f0d9ef60a9d353ee19e [2021-11-05 11:46:26,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 11:46:26,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 11:46:26,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:26,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 11:46:26,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 11:46:26,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:26" (1/1) ... [2021-11-05 11:46:26,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf02af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:26, skipping insertion in model container [2021-11-05 11:46:26,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:26" (1/1) ... [2021-11-05 11:46:26,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 11:46:26,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 11:46:27,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-05 11:46:27,206 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-05 11:46:27,219 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:27,226 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:27,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,801 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,813 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,151 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:28,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,272 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 11:46:28,280 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-05 11:46:28,281 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-05 11:46:28,282 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:28,282 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:28,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,401 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:28,454 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,455 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,695 INFO L208 MainTranslator]: Completed translation [2021-11-05 11:46:28,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28 WrapperNode [2021-11-05 11:46:28,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:28,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 11:46:28,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 11:46:28,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 11:46:28,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 11:46:28,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 11:46:28,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 11:46:28,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 11:46:28,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 11:46:28,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 11:46:28,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:28,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 11:46:28,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 11:46:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 11:46:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 11:46:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 11:46:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 11:46:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 11:46:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 11:46:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 11:46:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 11:46:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 11:46:35,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 11:46:35,739 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-05 11:46:35,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:35 BoogieIcfgContainer [2021-11-05 11:46:35,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 11:46:35,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 11:46:35,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 11:46:35,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 11:46:35,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 11:46:26" (1/3) ... [2021-11-05 11:46:35,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bec31dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:35, skipping insertion in model container [2021-11-05 11:46:35,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (2/3) ... [2021-11-05 11:46:35,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bec31dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:35, skipping insertion in model container [2021-11-05 11:46:35,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:35" (3/3) ... [2021-11-05 11:46:35,746 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2021-11-05 11:46:35,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 11:46:35,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-05 11:46:35,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 11:46:35,811 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 11:46:35,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-05 11:46:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 11:46:35,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:35,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:35,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1732099540, now seen corresponding path program 1 times [2021-11-05 11:46:35,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:35,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100018944] [2021-11-05 11:46:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:35,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:36,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:36,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100018944] [2021-11-05 11:46:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100018944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:36,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 11:46:36,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702773565] [2021-11-05 11:46:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:36,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 11:46:36,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 11:46:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:36,458 INFO L87 Difference]: Start difference. First operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:36,479 INFO L93 Difference]: Finished difference Result 131 states and 182 transitions. [2021-11-05 11:46:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 11:46:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-05 11:46:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:36,487 INFO L225 Difference]: With dead ends: 131 [2021-11-05 11:46:36,488 INFO L226 Difference]: Without dead ends: 61 [2021-11-05 11:46:36,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:36,497 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:36,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 11:46:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-05 11:46:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-05 11:46:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2021-11-05 11:46:36,526 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 27 [2021-11-05 11:46:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:36,527 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2021-11-05 11:46:36,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2021-11-05 11:46:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 11:46:36,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:36,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:36,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 11:46:36,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1816466470, now seen corresponding path program 1 times [2021-11-05 11:46:36,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:36,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013255331] [2021-11-05 11:46:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:36,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:36,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013255331] [2021-11-05 11:46:36,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013255331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:36,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:36,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 11:46:36,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199332213] [2021-11-05 11:46:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:36,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 11:46:36,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 11:46:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:36,976 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:37,040 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2021-11-05 11:46:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 11:46:37,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-05 11:46:37,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:37,042 INFO L225 Difference]: With dead ends: 88 [2021-11-05 11:46:37,042 INFO L226 Difference]: Without dead ends: 74 [2021-11-05 11:46:37,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:37,043 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 13 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.72ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:37,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 202 Invalid, 11 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 31.72ms Time] [2021-11-05 11:46:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-05 11:46:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2021-11-05 11:46:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-11-05 11:46:37,048 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 27 [2021-11-05 11:46:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:37,048 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-11-05 11:46:37,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-11-05 11:46:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 11:46:37,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:37,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:37,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 11:46:37,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1086636907, now seen corresponding path program 1 times [2021-11-05 11:46:37,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:37,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71078842] [2021-11-05 11:46:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:37,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:38,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:38,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71078842] [2021-11-05 11:46:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71078842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:38,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:38,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 11:46:38,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281717290] [2021-11-05 11:46:38,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:38,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 11:46:38,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 11:46:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:46:38,686 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:41,372 INFO L93 Difference]: Finished difference Result 264 states and 311 transitions. [2021-11-05 11:46:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 11:46:41,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-05 11:46:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:41,383 INFO L225 Difference]: With dead ends: 264 [2021-11-05 11:46:41,383 INFO L226 Difference]: Without dead ends: 262 [2021-11-05 11:46:41,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2311.74ms TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-05 11:46:41,387 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 355 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 945.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.42ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1037.72ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:41,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 763 Invalid, 337 Unknown, 0 Unchecked, 9.42ms Time], IncrementalHoareTripleChecker [25 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1037.72ms Time] [2021-11-05 11:46:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-05 11:46:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 99. [2021-11-05 11:46:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.21875) internal successors, (117), 98 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2021-11-05 11:46:41,408 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 29 [2021-11-05 11:46:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:41,409 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2021-11-05 11:46:41,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2021-11-05 11:46:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 11:46:41,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:41,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:41,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 11:46:41,412 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1877136435, now seen corresponding path program 1 times [2021-11-05 11:46:41,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:41,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053620383] [2021-11-05 11:46:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:41,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:41,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:41,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053620383] [2021-11-05 11:46:41,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053620383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:41,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:41,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:41,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061295940] [2021-11-05 11:46:41,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:41,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:41,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:41,865 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:42,295 INFO L93 Difference]: Finished difference Result 230 states and 268 transitions. [2021-11-05 11:46:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 11:46:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-05 11:46:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:42,297 INFO L225 Difference]: With dead ends: 230 [2021-11-05 11:46:42,298 INFO L226 Difference]: Without dead ends: 221 [2021-11-05 11:46:42,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 320.61ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 11:46:42,298 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 156 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.75ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:42,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 397 Invalid, 71 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 238.75ms Time] [2021-11-05 11:46:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-05 11:46:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 160. [2021-11-05 11:46:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 1.2229299363057324) internal successors, (192), 159 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2021-11-05 11:46:42,324 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 29 [2021-11-05 11:46:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:42,324 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2021-11-05 11:46:42,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2021-11-05 11:46:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 11:46:42,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:42,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 11:46:42,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1922058451, now seen corresponding path program 1 times [2021-11-05 11:46:42,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:42,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880019452] [2021-11-05 11:46:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:42,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:42,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:42,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880019452] [2021-11-05 11:46:42,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880019452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:42,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:42,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 11:46:42,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434575302] [2021-11-05 11:46:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:42,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 11:46:42,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 11:46:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 11:46:42,666 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:43,369 INFO L93 Difference]: Finished difference Result 218 states and 256 transitions. [2021-11-05 11:46:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 11:46:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-05 11:46:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:43,370 INFO L225 Difference]: With dead ends: 218 [2021-11-05 11:46:43,370 INFO L226 Difference]: Without dead ends: 177 [2021-11-05 11:46:43,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 476.82ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-05 11:46:43,371 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 225 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.11ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:43,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 481 Invalid, 109 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 334.11ms Time] [2021-11-05 11:46:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-05 11:46:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2021-11-05 11:46:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.2098765432098766) internal successors, (196), 164 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 196 transitions. [2021-11-05 11:46:43,380 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 196 transitions. Word has length 30 [2021-11-05 11:46:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:43,380 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 196 transitions. [2021-11-05 11:46:43,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 196 transitions. [2021-11-05 11:46:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 11:46:43,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:43,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:43,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 11:46:43,383 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 656321838, now seen corresponding path program 1 times [2021-11-05 11:46:43,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:43,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374061108] [2021-11-05 11:46:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:43,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:44,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:44,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374061108] [2021-11-05 11:46:44,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374061108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:44,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:44,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 11:46:44,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470955636] [2021-11-05 11:46:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:44,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 11:46:44,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 11:46:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:46:44,192 INFO L87 Difference]: Start difference. First operand 165 states and 196 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:46,490 INFO L93 Difference]: Finished difference Result 272 states and 313 transitions. [2021-11-05 11:46:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 11:46:46,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-05 11:46:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:46,491 INFO L225 Difference]: With dead ends: 272 [2021-11-05 11:46:46,491 INFO L226 Difference]: Without dead ends: 258 [2021-11-05 11:46:46,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1959.57ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-11-05 11:46:46,492 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 562 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 615.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 656.62ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:46,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 463 Invalid, 235 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 656.62ms Time] [2021-11-05 11:46:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-05 11:46:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 207. [2021-11-05 11:46:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 204 states have (on average 1.2009803921568627) internal successors, (245), 206 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2021-11-05 11:46:46,523 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 32 [2021-11-05 11:46:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:46,523 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2021-11-05 11:46:46,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2021-11-05 11:46:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 11:46:46,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:46,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:46,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 11:46:46,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1112605294, now seen corresponding path program 1 times [2021-11-05 11:46:46,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:46,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245652809] [2021-11-05 11:46:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:46,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:46,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:46,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245652809] [2021-11-05 11:46:46,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245652809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:46,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 11:46:46,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993705709] [2021-11-05 11:46:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:46,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 11:46:46,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:46,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 11:46:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:46,823 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:46,984 INFO L93 Difference]: Finished difference Result 229 states and 268 transitions. [2021-11-05 11:46:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 11:46:46,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-05 11:46:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:46,985 INFO L225 Difference]: With dead ends: 229 [2021-11-05 11:46:46,985 INFO L226 Difference]: Without dead ends: 224 [2021-11-05 11:46:46,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:46,986 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 29 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.80ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:46,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 176 Invalid, 36 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 123.80ms Time] [2021-11-05 11:46:46,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-05 11:46:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2021-11-05 11:46:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1952380952380952) internal successors, (251), 212 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2021-11-05 11:46:47,000 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 33 [2021-11-05 11:46:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:47,001 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2021-11-05 11:46:47,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2021-11-05 11:46:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 11:46:47,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:47,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:47,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 11:46:47,006 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash -624278052, now seen corresponding path program 1 times [2021-11-05 11:46:47,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:47,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775432397] [2021-11-05 11:46:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:47,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:47,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:47,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775432397] [2021-11-05 11:46:47,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775432397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:47,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:47,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 11:46:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006360596] [2021-11-05 11:46:47,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:47,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 11:46:47,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 11:46:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 11:46:47,395 INFO L87 Difference]: Start difference. First operand 213 states and 251 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:47,948 INFO L93 Difference]: Finished difference Result 255 states and 295 transitions. [2021-11-05 11:46:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 11:46:47,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-05 11:46:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:47,950 INFO L225 Difference]: With dead ends: 255 [2021-11-05 11:46:47,950 INFO L226 Difference]: Without dead ends: 225 [2021-11-05 11:46:47,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 451.50ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-05 11:46:47,951 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 324 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 238.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 257.29ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:47,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 402 Invalid, 101 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 257.29ms Time] [2021-11-05 11:46:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-05 11:46:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 213. [2021-11-05 11:46:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1904761904761905) internal successors, (250), 212 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 250 transitions. [2021-11-05 11:46:47,960 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 250 transitions. Word has length 34 [2021-11-05 11:46:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:47,961 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 250 transitions. [2021-11-05 11:46:47,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 250 transitions. [2021-11-05 11:46:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 11:46:47,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:47,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:47,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 11:46:47,964 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1261304773, now seen corresponding path program 1 times [2021-11-05 11:46:47,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:47,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800121264] [2021-11-05 11:46:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:47,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:48,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:48,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800121264] [2021-11-05 11:46:48,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800121264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:48,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:48,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 11:46:48,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892860449] [2021-11-05 11:46:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 11:46:48,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 11:46:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:46:48,936 INFO L87 Difference]: Start difference. First operand 213 states and 250 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:51,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:51,686 INFO L93 Difference]: Finished difference Result 277 states and 308 transitions. [2021-11-05 11:46:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 11:46:51,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-05 11:46:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:51,688 INFO L225 Difference]: With dead ends: 277 [2021-11-05 11:46:51,688 INFO L226 Difference]: Without dead ends: 248 [2021-11-05 11:46:51,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2164.01ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 11:46:51,689 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 764 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 859.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 917.12ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:51,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 584 Invalid, 352 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [50 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 917.12ms Time] [2021-11-05 11:46:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-05 11:46:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 213. [2021-11-05 11:46:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1857142857142857) internal successors, (249), 212 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2021-11-05 11:46:51,695 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 35 [2021-11-05 11:46:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:51,695 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2021-11-05 11:46:51,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2021-11-05 11:46:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 11:46:51,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:51,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:51,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 11:46:51,696 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1812640806, now seen corresponding path program 1 times [2021-11-05 11:46:51,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:51,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925705894] [2021-11-05 11:46:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:51,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:53,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:53,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925705894] [2021-11-05 11:46:53,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925705894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:53,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:53,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:53,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456365426] [2021-11-05 11:46:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:53,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:53,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:53,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:53,841 INFO L87 Difference]: Start difference. First operand 213 states and 249 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:54,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:54,188 INFO L93 Difference]: Finished difference Result 236 states and 270 transitions. [2021-11-05 11:46:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 11:46:54,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-05 11:46:54,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:54,190 INFO L225 Difference]: With dead ends: 236 [2021-11-05 11:46:54,190 INFO L226 Difference]: Without dead ends: 223 [2021-11-05 11:46:54,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 217.81ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 11:46:54,190 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 127 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.66ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:54,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 215 Invalid, 79 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 239.66ms Time] [2021-11-05 11:46:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-05 11:46:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 213. [2021-11-05 11:46:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.180952380952381) internal successors, (248), 212 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 248 transitions. [2021-11-05 11:46:54,199 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 248 transitions. Word has length 38 [2021-11-05 11:46:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:54,199 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 248 transitions. [2021-11-05 11:46:54,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 248 transitions. [2021-11-05 11:46:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 11:46:54,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:54,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:54,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 11:46:54,201 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1565375815, now seen corresponding path program 1 times [2021-11-05 11:46:54,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:54,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769315226] [2021-11-05 11:46:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:54,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:56,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:56,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769315226] [2021-11-05 11:46:56,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769315226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:56,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:56,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 11:46:56,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650197170] [2021-11-05 11:46:56,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:56,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 11:46:56,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 11:46:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-05 11:46:56,052 INFO L87 Difference]: Start difference. First operand 213 states and 248 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:47:00,801 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2021-11-05 11:47:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 11:47:00,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-05 11:47:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:47:00,802 INFO L225 Difference]: With dead ends: 231 [2021-11-05 11:47:00,803 INFO L226 Difference]: Without dead ends: 208 [2021-11-05 11:47:00,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4286.54ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 11:47:00,804 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 461 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1319.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1415.06ms IncrementalHoareTripleChecker+Time [2021-11-05 11:47:00,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 809 Invalid, 475 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [30 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1415.06ms Time] [2021-11-05 11:47:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-05 11:47:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 192. [2021-11-05 11:47:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.1851851851851851) internal successors, (224), 191 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 224 transitions. [2021-11-05 11:47:00,814 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 224 transitions. Word has length 38 [2021-11-05 11:47:00,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:47:00,815 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 224 transitions. [2021-11-05 11:47:00,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 224 transitions. [2021-11-05 11:47:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 11:47:00,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:47:00,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:47:00,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 11:47:00,817 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:47:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:47:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1243884861, now seen corresponding path program 1 times [2021-11-05 11:47:00,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:47:00,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136822715] [2021-11-05 11:47:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:47:00,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:47:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:47:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:47:01,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:47:01,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136822715] [2021-11-05 11:47:01,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136822715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:47:01,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:47:01,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 11:47:01,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565871258] [2021-11-05 11:47:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:47:01,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 11:47:01,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:47:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 11:47:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:47:01,956 INFO L87 Difference]: Start difference. First operand 192 states and 224 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:47:05,019 INFO L93 Difference]: Finished difference Result 259 states and 294 transitions. [2021-11-05 11:47:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 11:47:05,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-05 11:47:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:47:05,021 INFO L225 Difference]: With dead ends: 259 [2021-11-05 11:47:05,021 INFO L226 Difference]: Without dead ends: 232 [2021-11-05 11:47:05,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2458.61ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-11-05 11:47:05,021 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 240 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 975.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1042.39ms IncrementalHoareTripleChecker+Time [2021-11-05 11:47:05,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 657 Invalid, 392 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [19 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1042.39ms Time] [2021-11-05 11:47:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-05 11:47:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 194. [2021-11-05 11:47:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 191 states have (on average 1.1832460732984293) internal successors, (226), 193 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2021-11-05 11:47:05,027 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 38 [2021-11-05 11:47:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:47:05,028 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2021-11-05 11:47:05,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:05,028 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2021-11-05 11:47:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 11:47:05,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:47:05,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:47:05,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 11:47:05,028 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:47:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:47:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1604639621, now seen corresponding path program 1 times [2021-11-05 11:47:05,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:47:05,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368299578] [2021-11-05 11:47:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:47:05,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:47:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:47:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:47:05,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:47:05,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368299578] [2021-11-05 11:47:05,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368299578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:47:05,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:47:05,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 11:47:05,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96217718] [2021-11-05 11:47:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:47:05,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 11:47:05,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:47:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 11:47:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:47:05,770 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:47:07,409 INFO L93 Difference]: Finished difference Result 279 states and 323 transitions. [2021-11-05 11:47:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 11:47:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-05 11:47:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:47:07,411 INFO L225 Difference]: With dead ends: 279 [2021-11-05 11:47:07,411 INFO L226 Difference]: Without dead ends: 266 [2021-11-05 11:47:07,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1309.81ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-05 11:47:07,411 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 364 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 596.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 662.14ms IncrementalHoareTripleChecker+Time [2021-11-05 11:47:07,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 748 Invalid, 232 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [11 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 662.14ms Time] [2021-11-05 11:47:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-05 11:47:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2021-11-05 11:47:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 1.1658986175115207) internal successors, (253), 219 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 253 transitions. [2021-11-05 11:47:07,419 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 253 transitions. Word has length 39 [2021-11-05 11:47:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:47:07,419 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 253 transitions. [2021-11-05 11:47:07,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:47:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 253 transitions. [2021-11-05 11:47:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 11:47:07,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:47:07,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:47:07,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 11:47:07,420 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:47:07,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:47:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1876182655, now seen corresponding path program 1 times [2021-11-05 11:47:07,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:47:07,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117662853] [2021-11-05 11:47:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:47:07,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:47:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:48:29,415 WARN L230 SmtUtils]: Spent 25.79s on a formula simplification. DAG size of input: 177 DAG size of output: 172 [2021-11-05 11:49:10,499 WARN L230 SmtUtils]: Spent 9.02s on a formula simplification that was a NOOP. DAG size: 170 [2021-11-05 11:52:31,246 WARN L230 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 326 DAG size of output: 314 [2021-11-05 11:52:59,745 WARN L230 SmtUtils]: Spent 8.86s on a formula simplification that was a NOOP. DAG size: 163 [2021-11-05 11:54:02,305 WARN L230 SmtUtils]: Spent 21.21s on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2021-11-05 11:54:51,687 WARN L230 SmtUtils]: Spent 18.81s on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2021-11-05 11:55:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:55:06,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:55:06,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117662853] [2021-11-05 11:55:06,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117662853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:55:06,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:55:06,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 11:55:06,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610435596] [2021-11-05 11:55:06,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:55:06,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 11:55:06,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:55:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 11:55:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=393, Unknown=7, NotChecked=0, Total=462 [2021-11-05 11:55:06,352 INFO L87 Difference]: Start difference. First operand 220 states and 253 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:55:08,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:10,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:12,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:14,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:16,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:18,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:21,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:23,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:25,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:30,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:35,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:37,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:39,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:47,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:49,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:55:51,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:56:09,223 WARN L230 SmtUtils]: Spent 15.93s on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2021-11-05 11:56:25,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:56:26,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:56:29,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:56:32,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:56:34,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:56:36,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:57:37,853 WARN L230 SmtUtils]: Spent 52.33s on a formula simplification. DAG size of input: 495 DAG size of output: 213 [2021-11-05 11:58:04,232 WARN L230 SmtUtils]: Spent 18.32s on a formula simplification. DAG size of input: 535 DAG size of output: 200 [2021-11-05 11:58:40,639 WARN L230 SmtUtils]: Spent 25.83s on a formula simplification. DAG size of input: 557 DAG size of output: 223 [2021-11-05 11:59:15,280 WARN L230 SmtUtils]: Spent 25.16s on a formula simplification. DAG size of input: 562 DAG size of output: 228 [2021-11-05 11:59:55,765 WARN L230 SmtUtils]: Spent 29.23s on a formula simplification. DAG size of input: 540 DAG size of output: 205 [2021-11-05 11:59:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:59:56,774 INFO L93 Difference]: Finished difference Result 269 states and 303 transitions. [2021-11-05 11:59:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 11:59:56,775 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-05 11:59:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:59:56,776 INFO L225 Difference]: With dead ends: 269 [2021-11-05 11:59:56,776 INFO L226 Difference]: Without dead ends: 267 [2021-11-05 11:59:56,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 435428.00ms TimeCoverageRelationStatistics Valid=308, Invalid=1238, Unknown=14, NotChecked=0, Total=1560 [2021-11-05 11:59:56,777 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 439 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 59 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53643.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.41ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55050.97ms IncrementalHoareTripleChecker+Time [2021-11-05 11:59:56,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1048 Invalid, 800 Unknown, 0 Unchecked, 16.41ms Time], IncrementalHoareTripleChecker [59 Valid, 723 Invalid, 18 Unknown, 0 Unchecked, 55050.97ms Time] [2021-11-05 11:59:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-05 11:59:56,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 222. [2021-11-05 11:59:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 219 states have (on average 1.1643835616438356) internal successors, (255), 221 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:59:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 255 transitions. [2021-11-05 11:59:56,790 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 255 transitions. Word has length 40 [2021-11-05 11:59:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:59:56,790 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 255 transitions. [2021-11-05 11:59:56,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:59:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 255 transitions. [2021-11-05 11:59:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 11:59:56,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:59:56,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:59:56,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 11:59:56,793 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:59:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:59:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash -237922938, now seen corresponding path program 1 times [2021-11-05 11:59:56,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:59:56,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028561446] [2021-11-05 11:59:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:59:56,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:59:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:59:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:59:58,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:59:58,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028561446] [2021-11-05 11:59:58,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028561446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:59:58,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:59:58,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 11:59:58,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224664838] [2021-11-05 11:59:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:59:58,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 11:59:58,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:59:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 11:59:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-05 11:59:58,286 INFO L87 Difference]: Start difference. First operand 222 states and 255 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:00:01,173 INFO L93 Difference]: Finished difference Result 255 states and 290 transitions. [2021-11-05 12:00:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:00:01,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 12:00:01,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:00:01,175 INFO L225 Difference]: With dead ends: 255 [2021-11-05 12:00:01,175 INFO L226 Difference]: Without dead ends: 238 [2021-11-05 12:00:01,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2567.59ms TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:00:01,175 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 199 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 887.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.94ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 940.40ms IncrementalHoareTripleChecker+Time [2021-11-05 12:00:01,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 605 Invalid, 297 Unknown, 0 Unchecked, 17.94ms Time], IncrementalHoareTripleChecker [6 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 940.40ms Time] [2021-11-05 12:00:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-05 12:00:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 231. [2021-11-05 12:00:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 228 states have (on average 1.1578947368421053) internal successors, (264), 230 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 264 transitions. [2021-11-05 12:00:01,185 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 264 transitions. Word has length 41 [2021-11-05 12:00:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:00:01,185 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 264 transitions. [2021-11-05 12:00:01,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 264 transitions. [2021-11-05 12:00:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 12:00:01,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:00:01,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:00:01,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:00:01,195 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 12:00:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:00:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1569116892, now seen corresponding path program 1 times [2021-11-05 12:00:01,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:00:01,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400908802] [2021-11-05 12:00:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:01,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:00:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:00:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:00:26,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:00:26,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400908802] [2021-11-05 12:00:26,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400908802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:00:26,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:00:26,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:00:26,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122416745] [2021-11-05 12:00:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:00:26,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:00:26,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:00:26,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:00:26,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:00:26,589 INFO L87 Difference]: Start difference. First operand 231 states and 264 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:28,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:00:30,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:00:32,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:00:34,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:00:37,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:00:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:00:41,919 INFO L93 Difference]: Finished difference Result 270 states and 299 transitions. [2021-11-05 12:00:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 12:00:41,919 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 12:00:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:00:41,920 INFO L225 Difference]: With dead ends: 270 [2021-11-05 12:00:41,920 INFO L226 Difference]: Without dead ends: 249 [2021-11-05 12:00:41,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3869.86ms TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:00:41,921 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 316 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 35 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11700.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.93ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12329.12ms IncrementalHoareTripleChecker+Time [2021-11-05 12:00:41,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 796 Invalid, 526 Unknown, 0 Unchecked, 7.93ms Time], IncrementalHoareTripleChecker [35 Valid, 486 Invalid, 5 Unknown, 0 Unchecked, 12329.12ms Time] [2021-11-05 12:00:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-05 12:00:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 215. [2021-11-05 12:00:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 212 states have (on average 1.1415094339622642) internal successors, (242), 214 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 242 transitions. [2021-11-05 12:00:41,934 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 242 transitions. Word has length 41 [2021-11-05 12:00:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:00:41,934 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 242 transitions. [2021-11-05 12:00:41,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 242 transitions. [2021-11-05 12:00:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 12:00:41,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:00:41,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:00:41,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:00:41,935 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 12:00:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:00:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash 12402338, now seen corresponding path program 1 times [2021-11-05 12:00:41,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:00:41,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343357712] [2021-11-05 12:00:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:41,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:00:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:00:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:00:44,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:00:44,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343357712] [2021-11-05 12:00:44,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343357712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:00:44,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:00:44,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:00:44,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990578343] [2021-11-05 12:00:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:00:44,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:00:44,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:00:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:00:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:00:44,796 INFO L87 Difference]: Start difference. First operand 215 states and 242 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15