./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_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_byte_buf_reserve_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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:17:32,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:17:32,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:17:32,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:17:32,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:17:32,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:17:32,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:17:32,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:17:32,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:17:32,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:17:32,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:17:32,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:17:32,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:17:32,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:17:32,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:17:32,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:17:32,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:17:32,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:17:32,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:17:32,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:17:32,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:17:32,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:17:32,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:17:32,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:17:32,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:17:32,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:17:32,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:17:32,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:17:32,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:17:32,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:17:32,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:17:32,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:17:32,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:17:32,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:17:32,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:17:32,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:17:32,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:17:32,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:17:32,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:17:32,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:17:32,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:17:32,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:17:32,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:17:32,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:17:32,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:17:32,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:17:32,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:17:32,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:17:32,397 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:17:32,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:17:32,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:17:32,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:17:32,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:17:32,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:17:32,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:17:32,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:17:32,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:17:32,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:17:32,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:17:32,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:17:32,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:17:32,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:17:32,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:17:32,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:17:32,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:17:32,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:17:32,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:17:32,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:17:32,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:17:32,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:17:32,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:17:32,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2021-11-05 12:17:32,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:17:32,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:17:32,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:17:32,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:17:32,684 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:17:32,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-05 12:17:32,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d22d3df/eef6df4ad40144ca9720683d09cb9c8e/FLAGbc4c8558b [2021-11-05 12:17:33,394 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:17:33,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-05 12:17:33,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d22d3df/eef6df4ad40144ca9720683d09cb9c8e/FLAGbc4c8558b [2021-11-05 12:17:33,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d22d3df/eef6df4ad40144ca9720683d09cb9c8e [2021-11-05 12:17:33,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:17:33,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:17:33,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:17:33,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:17:33,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:17:33,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:17:33" (1/1) ... [2021-11-05 12:17:33,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b928aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:33, skipping insertion in model container [2021-11-05 12:17:33,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:17:33" (1/1) ... [2021-11-05 12:17:33,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:17:33,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:17:33,848 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_byte_buf_reserve_harness.i[4494,4507] [2021-11-05 12:17:33,853 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_byte_buf_reserve_harness.i[4554,4567] [2021-11-05 12:17:33,864 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:17:33,867 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:17:34,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,327 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,328 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,496 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:17:34,497 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:17:34,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:17:34,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:17:34,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:17:34,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:17:34,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:17:34,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:17:34,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:17:34,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:17:34,583 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:17:34,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:17:34,732 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:17:34,741 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_byte_buf_reserve_harness.i[4494,4507] [2021-11-05 12:17:34,742 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_byte_buf_reserve_harness.i[4554,4567] [2021-11-05 12:17:34,743 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:17:34,747 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:17:34,786 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,786 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:17:34,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:17:34,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:17:34,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:17:34,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:17:34,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:17:34,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:17:34,856 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:17:34,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:17:34,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:17:34,886 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:17:34,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:17:34,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:17:35,161 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:17:35,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35 WrapperNode [2021-11-05 12:17:35,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:17:35,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:17:35,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:17:35,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:17:35,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:17:35,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:17:35,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:17:35,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:17:35,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:17:35,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:17:35,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:17:35,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:17:35,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (1/1) ... [2021-11-05 12:17:35,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:17:35,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:17:35,477 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 12:17:35,495 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 12:17:35,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:17:35,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:17:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:17:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:17:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:17:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:17:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:17:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:17:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:17:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:17:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:17:43,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:17:43,334 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2021-11-05 12:17:43,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:17:43 BoogieIcfgContainer [2021-11-05 12:17:43,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:17:43,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:17:43,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:17:43,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:17:43,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:17:33" (1/3) ... [2021-11-05 12:17:43,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@941daf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:17:43, skipping insertion in model container [2021-11-05 12:17:43,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:17:35" (2/3) ... [2021-11-05 12:17:43,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@941daf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:17:43, skipping insertion in model container [2021-11-05 12:17:43,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:17:43" (3/3) ... [2021-11-05 12:17:43,341 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2021-11-05 12:17:43,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:17:43,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-05 12:17:43,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:17:43,395 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 12:17:43,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-05 12:17:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 190 states have (on average 1.4789473684210526) internal successors, (281), 200 states have internal predecessors, (281), 0 states have call successors, (0), 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 12:17:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-05 12:17:43,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:43,414 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] [2021-11-05 12:17:43,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash -478674777, now seen corresponding path program 1 times [2021-11-05 12:17:43,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:43,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737299279] [2021-11-05 12:17:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:43,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:43,999 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 12:17:44,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:44,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737299279] [2021-11-05 12:17:44,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737299279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:44,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:44,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:17:44,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328608095] [2021-11-05 12:17:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:44,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:17:44,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:17:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:17:44,037 INFO L87 Difference]: Start difference. First operand has 201 states, 190 states have (on average 1.4789473684210526) internal successors, (281), 200 states have internal predecessors, (281), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 12:17:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:44,082 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-11-05 12:17:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:17:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-05 12:17:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:44,095 INFO L225 Difference]: With dead ends: 395 [2021-11-05 12:17:44,096 INFO L226 Difference]: Without dead ends: 194 [2021-11-05 12:17:44,099 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 12:17:44,104 INFO L933 BasicCegarLoop]: 259 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, 259 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:44,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:17:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-05 12:17:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-05 12:17:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.358695652173913) internal successors, (250), 193 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 12:17:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 250 transitions. [2021-11-05 12:17:44,153 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 250 transitions. Word has length 22 [2021-11-05 12:17:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:44,154 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 250 transitions. [2021-11-05 12:17:44,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 12:17:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 250 transitions. [2021-11-05 12:17:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-05 12:17:44,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:44,156 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] [2021-11-05 12:17:44,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:17:44,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2067022679, now seen corresponding path program 1 times [2021-11-05 12:17:44,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:44,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341459665] [2021-11-05 12:17:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:44,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:44,519 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 12:17:44,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:44,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341459665] [2021-11-05 12:17:44,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341459665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:44,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:44,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:17:44,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851172004] [2021-11-05 12:17:44,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:44,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:17:44,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:17:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:17:44,522 INFO L87 Difference]: Start difference. First operand 194 states and 250 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 12:17:44,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:44,718 INFO L93 Difference]: Finished difference Result 365 states and 469 transitions. [2021-11-05 12:17:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:17:44,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-05 12:17:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:44,720 INFO L225 Difference]: With dead ends: 365 [2021-11-05 12:17:44,720 INFO L226 Difference]: Without dead ends: 194 [2021-11-05 12:17:44,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.98ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:17:44,721 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 235 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.28ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:44,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 348 Invalid, 45 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 172.28ms Time] [2021-11-05 12:17:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-05 12:17:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-05 12:17:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.3478260869565217) internal successors, (248), 193 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 12:17:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 248 transitions. [2021-11-05 12:17:44,729 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 248 transitions. Word has length 22 [2021-11-05 12:17:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:44,730 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 248 transitions. [2021-11-05 12:17:44,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 12:17:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 248 transitions. [2021-11-05 12:17:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 12:17:44,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:44,731 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] [2021-11-05 12:17:44,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:17:44,731 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash 921090108, now seen corresponding path program 1 times [2021-11-05 12:17:44,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:44,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554946428] [2021-11-05 12:17:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:44,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:44,972 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 12:17:44,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:44,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554946428] [2021-11-05 12:17:44,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554946428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:44,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:44,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:17:44,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104352213] [2021-11-05 12:17:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:44,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:17:44,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:17:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:17:44,974 INFO L87 Difference]: Start difference. First operand 194 states and 248 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 12:17:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:45,434 INFO L93 Difference]: Finished difference Result 506 states and 665 transitions. [2021-11-05 12:17:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:17:45,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-05 12:17:45,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:45,437 INFO L225 Difference]: With dead ends: 506 [2021-11-05 12:17:45,437 INFO L226 Difference]: Without dead ends: 326 [2021-11-05 12:17:45,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:17:45,439 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 196 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 366.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.92ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:45,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 817 Invalid, 127 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [21 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 408.92ms Time] [2021-11-05 12:17:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-05 12:17:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 206. [2021-11-05 12:17:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 196 states have (on average 1.3265306122448979) internal successors, (260), 205 states have internal predecessors, (260), 0 states have call successors, (0), 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 12:17:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-11-05 12:17:45,457 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 28 [2021-11-05 12:17:45,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:45,458 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-11-05 12:17:45,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 12:17:45,458 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-11-05 12:17:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 12:17:45,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:45,459 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] [2021-11-05 12:17:45,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:17:45,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -99978246, now seen corresponding path program 1 times [2021-11-05 12:17:45,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:45,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610216110] [2021-11-05 12:17:45,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:45,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:45,704 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 12:17:45,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:45,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610216110] [2021-11-05 12:17:45,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610216110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:45,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:45,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:17:45,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034907927] [2021-11-05 12:17:45,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:45,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:17:45,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:17:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:17:45,705 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 12:17:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:46,096 INFO L93 Difference]: Finished difference Result 448 states and 573 transitions. [2021-11-05 12:17:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:17:46,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-05 12:17:46,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:46,098 INFO L225 Difference]: With dead ends: 448 [2021-11-05 12:17:46,098 INFO L226 Difference]: Without dead ends: 266 [2021-11-05 12:17:46,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:17:46,099 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 147 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 316.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:46,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 651 Invalid, 120 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [21 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 344.72ms Time] [2021-11-05 12:17:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-05 12:17:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 218. [2021-11-05 12:17:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3076923076923077) internal successors, (272), 217 states have internal predecessors, (272), 0 states have call successors, (0), 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 12:17:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 272 transitions. [2021-11-05 12:17:46,107 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 272 transitions. Word has length 28 [2021-11-05 12:17:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:46,108 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 272 transitions. [2021-11-05 12:17:46,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 12:17:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 272 transitions. [2021-11-05 12:17:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 12:17:46,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:46,108 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] [2021-11-05 12:17:46,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:17:46,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1379732482, now seen corresponding path program 1 times [2021-11-05 12:17:46,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:46,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904325519] [2021-11-05 12:17:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:46,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:46,582 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 12:17:46,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:46,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904325519] [2021-11-05 12:17:46,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904325519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:46,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:46,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:17:46,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398152806] [2021-11-05 12:17:46,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:46,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:17:46,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:17:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:17:46,585 INFO L87 Difference]: Start difference. First operand 218 states and 272 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 12:17:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:46,785 INFO L93 Difference]: Finished difference Result 464 states and 556 transitions. [2021-11-05 12:17:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:17:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-05 12:17:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:46,801 INFO L225 Difference]: With dead ends: 464 [2021-11-05 12:17:46,801 INFO L226 Difference]: Without dead ends: 411 [2021-11-05 12:17:46,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 144.39ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:17:46,802 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 250 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:46,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 1247 Invalid, 33 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 96.96ms Time] [2021-11-05 12:17:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-05 12:17:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 220. [2021-11-05 12:17:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 210 states have (on average 1.3047619047619048) internal successors, (274), 219 states have internal predecessors, (274), 0 states have call successors, (0), 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 12:17:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 274 transitions. [2021-11-05 12:17:46,812 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 274 transitions. Word has length 28 [2021-11-05 12:17:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:46,813 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 274 transitions. [2021-11-05 12:17:46,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 12:17:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 274 transitions. [2021-11-05 12:17:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 12:17:46,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:46,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:46,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:17:46,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:46,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1583060967, now seen corresponding path program 1 times [2021-11-05 12:17:46,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:46,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315211164] [2021-11-05 12:17:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:46,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:47,185 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 12:17:47,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:47,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315211164] [2021-11-05 12:17:47,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315211164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:47,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:47,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:17:47,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185130503] [2021-11-05 12:17:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:47,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:17:47,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:17:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:17:47,186 INFO L87 Difference]: Start difference. First operand 220 states and 274 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:47,507 INFO L93 Difference]: Finished difference Result 386 states and 479 transitions. [2021-11-05 12:17:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:17:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-05 12:17:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:47,509 INFO L225 Difference]: With dead ends: 386 [2021-11-05 12:17:47,509 INFO L226 Difference]: Without dead ends: 220 [2021-11-05 12:17:47,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 254.61ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:17:47,510 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 792 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.67ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.59ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:47,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 364 Invalid, 56 Unknown, 0 Unchecked, 7.67ms Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 170.59ms Time] [2021-11-05 12:17:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-05 12:17:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-05 12:17:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 210 states have (on average 1.2857142857142858) internal successors, (270), 219 states have internal predecessors, (270), 0 states have call successors, (0), 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 12:17:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 270 transitions. [2021-11-05 12:17:47,514 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 270 transitions. Word has length 36 [2021-11-05 12:17:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:47,515 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 270 transitions. [2021-11-05 12:17:47,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 270 transitions. [2021-11-05 12:17:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 12:17:47,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:47,522 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 12:17:47,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:17:47,523 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash 443924828, now seen corresponding path program 1 times [2021-11-05 12:17:47,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:47,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733037006] [2021-11-05 12:17:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:47,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:47,898 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 12:17:47,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:47,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733037006] [2021-11-05 12:17:47,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733037006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:47,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:47,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:17:47,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120297307] [2021-11-05 12:17:47,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:47,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:17:47,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:17:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:17:47,900 INFO L87 Difference]: Start difference. First operand 220 states and 270 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 12:17:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:48,560 INFO L93 Difference]: Finished difference Result 359 states and 428 transitions. [2021-11-05 12:17:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:17:48,561 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 12:17:48,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:48,562 INFO L225 Difference]: With dead ends: 359 [2021-11-05 12:17:48,562 INFO L226 Difference]: Without dead ends: 351 [2021-11-05 12:17:48,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 225.57ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:17:48,563 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 232 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 474.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 512.53ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:48,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1000 Invalid, 217 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [35 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 512.53ms Time] [2021-11-05 12:17:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-05 12:17:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 236. [2021-11-05 12:17:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 226 states have (on average 1.2654867256637168) internal successors, (286), 235 states have internal predecessors, (286), 0 states have call successors, (0), 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 12:17:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 286 transitions. [2021-11-05 12:17:48,575 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 286 transitions. Word has length 38 [2021-11-05 12:17:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:48,577 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 286 transitions. [2021-11-05 12:17:48,577 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 12:17:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 286 transitions. [2021-11-05 12:17:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 12:17:48,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:48,579 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 12:17:48,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:17:48,580 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:48,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:48,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1410139390, now seen corresponding path program 1 times [2021-11-05 12:17:48,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:48,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773545827] [2021-11-05 12:17:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:48,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:50,648 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 12:17:50,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:50,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773545827] [2021-11-05 12:17:50,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773545827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:50,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:50,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:17:50,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922348849] [2021-11-05 12:17:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:50,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:17:50,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:17:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:17:50,649 INFO L87 Difference]: Start difference. First operand 236 states and 286 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 12:17:52,729 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 12:17:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:53,638 INFO L93 Difference]: Finished difference Result 335 states and 399 transitions. [2021-11-05 12:17:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:17:53,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:17:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:53,640 INFO L225 Difference]: With dead ends: 335 [2021-11-05 12:17:53,640 INFO L226 Difference]: Without dead ends: 333 [2021-11-05 12:17:53,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 195.49ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:17:53,641 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 273 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2707.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2851.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:53,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 688 Invalid, 212 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 1 Unknown, 0 Unchecked, 2851.26ms Time] [2021-11-05 12:17:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-05 12:17:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 306. [2021-11-05 12:17:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 296 states have (on average 1.2668918918918919) internal successors, (375), 305 states have internal predecessors, (375), 0 states have call successors, (0), 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 12:17:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2021-11-05 12:17:53,651 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 40 [2021-11-05 12:17:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:53,652 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2021-11-05 12:17:53,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:17:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2021-11-05 12:17:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:17:53,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:53,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:53,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:17:53,655 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2065569472, now seen corresponding path program 1 times [2021-11-05 12:17:53,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:53,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148073384] [2021-11-05 12:17:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:53,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:53,962 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 12:17:53,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:53,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148073384] [2021-11-05 12:17:53,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148073384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:53,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:53,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:17:53,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225891014] [2021-11-05 12:17:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:53,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:17:53,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:17:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:17:53,964 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:56,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:56,541 INFO L93 Difference]: Finished difference Result 330 states and 394 transitions. [2021-11-05 12:17:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:17:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-05 12:17:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:56,543 INFO L225 Difference]: With dead ends: 330 [2021-11-05 12:17:56,543 INFO L226 Difference]: Without dead ends: 328 [2021-11-05 12:17:56,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:17:56,544 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 159 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2369.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2519.05ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:56,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 590 Invalid, 108 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 1 Unknown, 0 Unchecked, 2519.05ms Time] [2021-11-05 12:17:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-05 12:17:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 308. [2021-11-05 12:17:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 298 states have (on average 1.2651006711409396) internal successors, (377), 307 states have internal predecessors, (377), 0 states have call successors, (0), 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 12:17:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 377 transitions. [2021-11-05 12:17:56,557 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 377 transitions. Word has length 42 [2021-11-05 12:17:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:56,558 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 377 transitions. [2021-11-05 12:17:56,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 377 transitions. [2021-11-05 12:17:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:17:56,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:56,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:56,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:17:56,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:17:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1894660332, now seen corresponding path program 1 times [2021-11-05 12:17:56,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:56,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099726536] [2021-11-05 12:17:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:56,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:17:56,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:56,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099726536] [2021-11-05 12:17:56,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099726536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:56,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:56,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:17:56,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906164509] [2021-11-05 12:17:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:56,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:17:56,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:17:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:17:56,925 INFO L87 Difference]: Start difference. First operand 308 states and 377 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:58,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:01,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:02,178 INFO L93 Difference]: Finished difference Result 857 states and 1048 transitions. [2021-11-05 12:18:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:18:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-05 12:18:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:02,180 INFO L225 Difference]: With dead ends: 857 [2021-11-05 12:18:02,180 INFO L226 Difference]: Without dead ends: 570 [2021-11-05 12:18:02,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 122.07ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:18:02,181 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 375 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4880.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5143.24ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:02,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 705 Invalid, 302 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [27 Valid, 273 Invalid, 2 Unknown, 0 Unchecked, 5143.24ms Time] [2021-11-05 12:18:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-05 12:18:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 332. [2021-11-05 12:18:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 322 states have (on average 1.2453416149068324) internal successors, (401), 331 states have internal predecessors, (401), 0 states have call successors, (0), 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 12:18:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 401 transitions. [2021-11-05 12:18:02,190 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 401 transitions. Word has length 42 [2021-11-05 12:18:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:02,190 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 401 transitions. [2021-11-05 12:18:02,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 401 transitions. [2021-11-05 12:18:02,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 12:18:02,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:02,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:02,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:18:02,191 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1214601962, now seen corresponding path program 1 times [2021-11-05 12:18:02,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:02,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447946181] [2021-11-05 12:18:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:02,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:03,968 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 12:18:03,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:03,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447946181] [2021-11-05 12:18:03,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447946181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:03,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:03,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:18:03,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279355596] [2021-11-05 12:18:03,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:03,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:18:03,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:18:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:03,969 INFO L87 Difference]: Start difference. First operand 332 states and 401 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:06,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:08,173 WARN L515 Checker$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 12:18:09,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:09,792 INFO L93 Difference]: Finished difference Result 702 states and 840 transitions. [2021-11-05 12:18:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:18:09,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-05 12:18:09,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:09,794 INFO L225 Difference]: With dead ends: 702 [2021-11-05 12:18:09,794 INFO L226 Difference]: Without dead ends: 399 [2021-11-05 12:18:09,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 689.94ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:18:09,795 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 749 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5024.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.09ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5259.50ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:09,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 916 Invalid, 350 Unknown, 0 Unchecked, 7.09ms Time], IncrementalHoareTripleChecker [27 Valid, 321 Invalid, 2 Unknown, 0 Unchecked, 5259.50ms Time] [2021-11-05 12:18:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-05 12:18:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 324. [2021-11-05 12:18:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 314 states have (on average 1.2452229299363058) internal successors, (391), 323 states have internal predecessors, (391), 0 states have call successors, (0), 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 12:18:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 391 transitions. [2021-11-05 12:18:09,804 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 391 transitions. Word has length 42 [2021-11-05 12:18:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:09,804 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 391 transitions. [2021-11-05 12:18:09,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 391 transitions. [2021-11-05 12:18:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 12:18:09,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:09,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:09,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:18:09,805 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 362256074, now seen corresponding path program 1 times [2021-11-05 12:18:09,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:09,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143798309] [2021-11-05 12:18:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:09,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:10,192 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 12:18:10,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:10,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143798309] [2021-11-05 12:18:10,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143798309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:10,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:10,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:18:10,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100282460] [2021-11-05 12:18:10,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:10,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:18:10,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:10,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:18:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:18:10,193 INFO L87 Difference]: Start difference. First operand 324 states and 391 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:11,065 INFO L93 Difference]: Finished difference Result 764 states and 911 transitions. [2021-11-05 12:18:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:18:11,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-05 12:18:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:11,067 INFO L225 Difference]: With dead ends: 764 [2021-11-05 12:18:11,067 INFO L226 Difference]: Without dead ends: 466 [2021-11-05 12:18:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 221.29ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:18:11,068 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 160 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 661.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 734.84ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:11,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1574 Invalid, 282 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [32 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 734.84ms Time] [2021-11-05 12:18:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-05 12:18:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 324. [2021-11-05 12:18:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 314 states have (on average 1.2420382165605095) internal successors, (390), 323 states have internal predecessors, (390), 0 states have call successors, (0), 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 12:18:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 390 transitions. [2021-11-05 12:18:11,089 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 390 transitions. Word has length 46 [2021-11-05 12:18:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:11,090 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 390 transitions. [2021-11-05 12:18:11,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:11,090 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 390 transitions. [2021-11-05 12:18:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:11,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:11,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:11,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:18:11,091 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash 50966821, now seen corresponding path program 1 times [2021-11-05 12:18:11,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:11,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684553396] [2021-11-05 12:18:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:11,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:13,744 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 12:18:13,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:13,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684553396] [2021-11-05 12:18:13,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684553396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:13,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:13,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:18:13,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337065650] [2021-11-05 12:18:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:13,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:18:13,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:18:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:18:13,746 INFO L87 Difference]: Start difference. First operand 324 states and 390 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:15,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:17,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:19,497 INFO L93 Difference]: Finished difference Result 615 states and 737 transitions. [2021-11-05 12:18:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:18:19,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:19,500 INFO L225 Difference]: With dead ends: 615 [2021-11-05 12:18:19,500 INFO L226 Difference]: Without dead ends: 583 [2021-11-05 12:18:19,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 334.86ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:18:19,500 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 787 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5297.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.52ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5598.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:19,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1331 Invalid, 484 Unknown, 0 Unchecked, 7.52ms Time], IncrementalHoareTripleChecker [28 Valid, 454 Invalid, 2 Unknown, 0 Unchecked, 5598.49ms Time] [2021-11-05 12:18:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-05 12:18:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 463. [2021-11-05 12:18:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 453 states have (on average 1.2472406181015452) internal successors, (565), 462 states have internal predecessors, (565), 0 states have call successors, (0), 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 12:18:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 565 transitions. [2021-11-05 12:18:19,513 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 565 transitions. Word has length 48 [2021-11-05 12:18:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:19,514 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 565 transitions. [2021-11-05 12:18:19,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 565 transitions. [2021-11-05 12:18:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:19,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:19,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:19,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:18:19,515 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1382043361, now seen corresponding path program 1 times [2021-11-05 12:18:19,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:19,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504645791] [2021-11-05 12:18:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:19,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:20,024 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 12:18:20,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:20,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504645791] [2021-11-05 12:18:20,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504645791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:20,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:20,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:18:20,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561081080] [2021-11-05 12:18:20,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:20,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:18:20,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:18:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:18:20,025 INFO L87 Difference]: Start difference. First operand 463 states and 565 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:22,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:24,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:26,088 INFO L93 Difference]: Finished difference Result 842 states and 1017 transitions. [2021-11-05 12:18:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:18:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:26,091 INFO L225 Difference]: With dead ends: 842 [2021-11-05 12:18:26,091 INFO L226 Difference]: Without dead ends: 819 [2021-11-05 12:18:26,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 608.14ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:18:26,092 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 632 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5215.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5575.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:26,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1115 Invalid, 436 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [34 Valid, 400 Invalid, 2 Unknown, 0 Unchecked, 5575.70ms Time] [2021-11-05 12:18:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-05 12:18:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 742. [2021-11-05 12:18:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 732 states have (on average 1.2513661202185793) internal successors, (916), 741 states have internal predecessors, (916), 0 states have call successors, (0), 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 12:18:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 916 transitions. [2021-11-05 12:18:26,149 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 916 transitions. Word has length 48 [2021-11-05 12:18:26,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:26,149 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 916 transitions. [2021-11-05 12:18:26,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 916 transitions. [2021-11-05 12:18:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:26,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:26,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:26,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:18:26,151 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash -701984991, now seen corresponding path program 1 times [2021-11-05 12:18:26,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:26,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559994698] [2021-11-05 12:18:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:26,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:26,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:26,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559994698] [2021-11-05 12:18:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559994698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:26,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:26,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:18:26,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643904550] [2021-11-05 12:18:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:26,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:18:26,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:26,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:18:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:26,446 INFO L87 Difference]: Start difference. First operand 742 states and 916 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:28,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:30,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:31,662 INFO L93 Difference]: Finished difference Result 1780 states and 2210 transitions. [2021-11-05 12:18:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:18:31,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:31,665 INFO L225 Difference]: With dead ends: 1780 [2021-11-05 12:18:31,665 INFO L226 Difference]: Without dead ends: 1117 [2021-11-05 12:18:31,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 86.75ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:18:31,667 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 183 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4808.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5135.58ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:31,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 932 Invalid, 281 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [26 Valid, 253 Invalid, 2 Unknown, 0 Unchecked, 5135.58ms Time] [2021-11-05 12:18:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2021-11-05 12:18:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 742. [2021-11-05 12:18:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 732 states have (on average 1.226775956284153) internal successors, (898), 741 states have internal predecessors, (898), 0 states have call successors, (0), 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 12:18:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 898 transitions. [2021-11-05 12:18:31,689 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 898 transitions. Word has length 48 [2021-11-05 12:18:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:31,689 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 898 transitions. [2021-11-05 12:18:31,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 898 transitions. [2021-11-05 12:18:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:31,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:31,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:18:31,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1359411107, now seen corresponding path program 1 times [2021-11-05 12:18:31,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:31,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046762808] [2021-11-05 12:18:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:31,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:34,754 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 12:18:34,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:34,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046762808] [2021-11-05 12:18:34,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046762808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:34,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:34,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:18:34,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863734272] [2021-11-05 12:18:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:34,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:18:34,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:18:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:18:34,756 INFO L87 Difference]: Start difference. First operand 742 states and 898 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:36,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:38,920 WARN L515 Checker$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 12:18:41,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:43,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:45,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:47,318 WARN L515 Checker$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 12:18:49,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:55,286 INFO L93 Difference]: Finished difference Result 804 states and 956 transitions. [2021-11-05 12:18:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:18:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:55,289 INFO L225 Difference]: With dead ends: 804 [2021-11-05 12:18:55,289 INFO L226 Difference]: Without dead ends: 781 [2021-11-05 12:18:55,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 4062.58ms TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:18:55,290 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1012 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16455.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.59ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17316.68ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:55,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 1742 Invalid, 750 Unknown, 0 Unchecked, 11.59ms Time], IncrementalHoareTripleChecker [30 Valid, 713 Invalid, 7 Unknown, 0 Unchecked, 17316.68ms Time] [2021-11-05 12:18:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-05 12:18:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 465. [2021-11-05 12:18:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 455 states have (on average 1.221978021978022) internal successors, (556), 464 states have internal predecessors, (556), 0 states have call successors, (0), 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 12:18:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 556 transitions. [2021-11-05 12:18:55,306 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 556 transitions. Word has length 48 [2021-11-05 12:18:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:55,306 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 556 transitions. [2021-11-05 12:18:55,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 556 transitions. [2021-11-05 12:18:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 12:18:55,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:55,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:55,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:18:55,308 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1402306347, now seen corresponding path program 1 times [2021-11-05 12:18:55,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:55,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670064042] [2021-11-05 12:18:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:55,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:55,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:55,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670064042] [2021-11-05 12:18:55,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670064042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:55,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:55,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:18:55,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337632155] [2021-11-05 12:18:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:55,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:18:55,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:55,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:18:55,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:55,450 INFO L87 Difference]: Start difference. First operand 465 states and 556 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:55,785 INFO L93 Difference]: Finished difference Result 778 states and 921 transitions. [2021-11-05 12:18:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:18:55,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-05 12:18:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:55,787 INFO L225 Difference]: With dead ends: 778 [2021-11-05 12:18:55,787 INFO L226 Difference]: Without dead ends: 362 [2021-11-05 12:18:55,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:55,788 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 43 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 273.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.85ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:55,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 651 Invalid, 120 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [20 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 295.85ms Time] [2021-11-05 12:18:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-05 12:18:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 326. [2021-11-05 12:18:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 316 states have (on average 1.1993670886075949) internal successors, (379), 325 states have internal predecessors, (379), 0 states have call successors, (0), 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 12:18:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 379 transitions. [2021-11-05 12:18:55,799 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 379 transitions. Word has length 48 [2021-11-05 12:18:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:55,800 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 379 transitions. [2021-11-05 12:18:55,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 379 transitions. [2021-11-05 12:18:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 12:18:55,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:55,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:18:55,801 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 118326138, now seen corresponding path program 1 times [2021-11-05 12:18:55,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:55,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047656947] [2021-11-05 12:18:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:55,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:56,178 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 12:18:56,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:56,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047656947] [2021-11-05 12:18:56,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047656947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:56,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:56,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:18:56,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356331454] [2021-11-05 12:18:56,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:56,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:18:56,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:56,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:18:56,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:56,179 INFO L87 Difference]: Start difference. First operand 326 states and 379 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 12:18:57,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:57,724 INFO L93 Difference]: Finished difference Result 546 states and 625 transitions. [2021-11-05 12:18:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:18:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-05 12:18:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:57,726 INFO L225 Difference]: With dead ends: 546 [2021-11-05 12:18:57,726 INFO L226 Difference]: Without dead ends: 538 [2021-11-05 12:18:57,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 567.70ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:18:57,727 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 259 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1027.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.66ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1094.02ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:57,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 1319 Invalid, 455 Unknown, 0 Unchecked, 5.66ms Time], IncrementalHoareTripleChecker [83 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1094.02ms Time] [2021-11-05 12:18:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-05 12:18:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 342. [2021-11-05 12:18:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 332 states have (on average 1.1897590361445782) internal successors, (395), 341 states have internal predecessors, (395), 0 states have call successors, (0), 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 12:18:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 395 transitions. [2021-11-05 12:18:57,740 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 395 transitions. Word has length 50 [2021-11-05 12:18:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:57,740 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 395 transitions. [2021-11-05 12:18:57,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 12:18:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 395 transitions. [2021-11-05 12:18:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 12:18:57,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:57,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:57,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:18:57,741 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:18:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -691020488, now seen corresponding path program 1 times [2021-11-05 12:18:57,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:57,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122322103] [2021-11-05 12:18:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:57,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:58,389 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 12:18:58,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:58,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122322103] [2021-11-05 12:18:58,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122322103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:58,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:58,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:18:58,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614474640] [2021-11-05 12:18:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:58,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:18:58,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:18:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:18:58,391 INFO L87 Difference]: Start difference. First operand 342 states and 395 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 12:19:00,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:02,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:04,641 WARN L515 Checker$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 12:19:06,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:08,855 WARN L515 Checker$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 12:19:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:12,210 INFO L93 Difference]: Finished difference Result 642 states and 723 transitions. [2021-11-05 12:19:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:19:12,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-05 12:19:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:12,212 INFO L225 Difference]: With dead ends: 642 [2021-11-05 12:19:12,212 INFO L226 Difference]: Without dead ends: 618 [2021-11-05 12:19:12,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 942.86ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:19:12,213 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 439 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 46 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12428.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13102.21ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:12,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1710 Invalid, 868 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [46 Valid, 817 Invalid, 5 Unknown, 0 Unchecked, 13102.21ms Time] [2021-11-05 12:19:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-05 12:19:12,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 496. [2021-11-05 12:19:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 486 states have (on average 1.1954732510288066) internal successors, (581), 495 states have internal predecessors, (581), 0 states have call successors, (0), 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 12:19:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 581 transitions. [2021-11-05 12:19:12,231 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 581 transitions. Word has length 50 [2021-11-05 12:19:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:12,232 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 581 transitions. [2021-11-05 12:19:12,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 12:19:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 581 transitions. [2021-11-05 12:19:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 12:19:12,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:12,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:12,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:19:12,233 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:12,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash -416260874, now seen corresponding path program 1 times [2021-11-05 12:19:12,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:12,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169883815] [2021-11-05 12:19:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:12,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:14,947 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 12:19:14,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:14,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169883815] [2021-11-05 12:19:14,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169883815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:14,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:14,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:19:14,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557286805] [2021-11-05 12:19:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:14,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:19:14,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:19:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:19:14,948 INFO L87 Difference]: Start difference. First operand 496 states and 581 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 12:19:16,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:22,117 INFO L93 Difference]: Finished difference Result 763 states and 878 transitions. [2021-11-05 12:19:22,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-05 12:19:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-05 12:19:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:22,120 INFO L225 Difference]: With dead ends: 763 [2021-11-05 12:19:22,120 INFO L226 Difference]: Without dead ends: 761 [2021-11-05 12:19:22,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 2852.06ms TimeCoverageRelationStatistics Valid=465, Invalid=1605, Unknown=0, NotChecked=0, Total=2070 [2021-11-05 12:19:22,121 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1428 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4434.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.40ms SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4701.45ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:22,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 1523 Invalid, 1085 Unknown, 0 Unchecked, 10.40ms Time], IncrementalHoareTripleChecker [209 Valid, 875 Invalid, 1 Unknown, 0 Unchecked, 4701.45ms Time] [2021-11-05 12:19:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-11-05 12:19:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 490. [2021-11-05 12:19:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 480 states have (on average 1.1958333333333333) internal successors, (574), 489 states have internal predecessors, (574), 0 states have call successors, (0), 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 12:19:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 574 transitions. [2021-11-05 12:19:22,139 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 574 transitions. Word has length 50 [2021-11-05 12:19:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:22,139 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 574 transitions. [2021-11-05 12:19:22,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 12:19:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 574 transitions. [2021-11-05 12:19:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:19:22,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:22,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:22,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:19:22,140 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1984479033, now seen corresponding path program 1 times [2021-11-05 12:19:22,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:22,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29277127] [2021-11-05 12:19:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:22,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:23,801 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 12:19:23,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:23,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29277127] [2021-11-05 12:19:23,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29277127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:23,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:23,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:19:23,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065059089] [2021-11-05 12:19:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:23,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:19:23,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:19:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:19:23,802 INFO L87 Difference]: Start difference. First operand 490 states and 574 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 12:19:25,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:27,963 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 12:19:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:28,601 INFO L93 Difference]: Finished difference Result 508 states and 588 transitions. [2021-11-05 12:19:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:19:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-05 12:19:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:28,603 INFO L225 Difference]: With dead ends: 508 [2021-11-05 12:19:28,603 INFO L226 Difference]: Without dead ends: 506 [2021-11-05 12:19:28,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 141.59ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:19:28,604 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 144 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4516.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4728.25ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:28,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 804 Invalid, 146 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 2 Unknown, 0 Unchecked, 4728.25ms Time] [2021-11-05 12:19:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-05 12:19:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 493. [2021-11-05 12:19:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 483 states have (on average 1.194616977225673) internal successors, (577), 492 states have internal predecessors, (577), 0 states have call successors, (0), 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 12:19:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 577 transitions. [2021-11-05 12:19:28,626 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 577 transitions. Word has length 57 [2021-11-05 12:19:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:28,626 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 577 transitions. [2021-11-05 12:19:28,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 12:19:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 577 transitions. [2021-11-05 12:19:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 12:19:28,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:28,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:28,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:19:28,628 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1367992626, now seen corresponding path program 1 times [2021-11-05 12:19:28,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:28,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713176439] [2021-11-05 12:19:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:28,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:29,342 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 12:19:29,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:29,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713176439] [2021-11-05 12:19:29,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713176439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:29,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:29,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:19:29,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574365074] [2021-11-05 12:19:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:29,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:19:29,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:19:29,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:19:29,344 INFO L87 Difference]: Start difference. First operand 493 states and 577 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 12:19:31,391 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 12:19:33,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:35,607 WARN L515 Checker$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 12:19:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:39,694 INFO L93 Difference]: Finished difference Result 1032 states and 1164 transitions. [2021-11-05 12:19:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 12:19:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-05 12:19:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:39,696 INFO L225 Difference]: With dead ends: 1032 [2021-11-05 12:19:39,696 INFO L226 Difference]: Without dead ends: 741 [2021-11-05 12:19:39,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1580.61ms TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:19:39,698 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1441 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 95 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8487.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.28ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9032.01ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:39,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 1585 Invalid, 908 Unknown, 0 Unchecked, 12.28ms Time], IncrementalHoareTripleChecker [95 Valid, 810 Invalid, 3 Unknown, 0 Unchecked, 9032.01ms Time] [2021-11-05 12:19:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-05 12:19:39,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 491. [2021-11-05 12:19:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 481 states have (on average 1.1912681912681913) internal successors, (573), 490 states have internal predecessors, (573), 0 states have call successors, (0), 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 12:19:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 573 transitions. [2021-11-05 12:19:39,716 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 573 transitions. Word has length 58 [2021-11-05 12:19:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:39,717 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 573 transitions. [2021-11-05 12:19:39,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 12:19:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 573 transitions. [2021-11-05 12:19:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 12:19:39,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:39,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:39,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:19:39,722 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1824799899, now seen corresponding path program 1 times [2021-11-05 12:19:39,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:39,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675410370] [2021-11-05 12:19:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:39,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:41,483 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 12:19:41,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:41,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675410370] [2021-11-05 12:19:41,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675410370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:41,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:41,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:19:41,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802882531] [2021-11-05 12:19:41,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:41,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:19:41,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:19:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:19:41,485 INFO L87 Difference]: Start difference. First operand 491 states and 573 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 12:19:43,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:45,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:47,804 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 12:19:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:49,520 INFO L93 Difference]: Finished difference Result 1022 states and 1182 transitions. [2021-11-05 12:19:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:19:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-05 12:19:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:49,522 INFO L225 Difference]: With dead ends: 1022 [2021-11-05 12:19:49,523 INFO L226 Difference]: Without dead ends: 617 [2021-11-05 12:19:49,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 803.46ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:19:49,531 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1025 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 45 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6966.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7420.27ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:49,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 901 Invalid, 369 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [45 Valid, 321 Invalid, 3 Unknown, 0 Unchecked, 7420.27ms Time] [2021-11-05 12:19:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-05 12:19:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 528. [2021-11-05 12:19:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 518 states have (on average 1.1853281853281854) internal successors, (614), 527 states have internal predecessors, (614), 0 states have call successors, (0), 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 12:19:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 614 transitions. [2021-11-05 12:19:49,550 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 614 transitions. Word has length 58 [2021-11-05 12:19:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:49,550 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 614 transitions. [2021-11-05 12:19:49,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 12:19:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 614 transitions. [2021-11-05 12:19:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 12:19:49,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:49,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:49,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:19:49,551 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2075913259, now seen corresponding path program 1 times [2021-11-05 12:19:49,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:49,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298420856] [2021-11-05 12:19:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:49,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:49,732 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 12:19:49,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:49,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298420856] [2021-11-05 12:19:49,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298420856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:49,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:49,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:19:49,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269557242] [2021-11-05 12:19:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:49,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:19:49,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:19:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:19:49,733 INFO L87 Difference]: Start difference. First operand 528 states and 614 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 12:19:51,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:52,040 INFO L93 Difference]: Finished difference Result 528 states and 614 transitions. [2021-11-05 12:19:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:19:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-05 12:19:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:52,042 INFO L225 Difference]: With dead ends: 528 [2021-11-05 12:19:52,042 INFO L226 Difference]: Without dead ends: 458 [2021-11-05 12:19:52,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.86ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:19:52,043 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 2 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2153.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2286.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:52,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 652 Invalid, 36 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2286.41ms Time] [2021-11-05 12:19:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-05 12:19:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 406. [2021-11-05 12:19:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 397 states have (on average 1.1939546599496222) internal successors, (474), 405 states have internal predecessors, (474), 0 states have call successors, (0), 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 12:19:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 474 transitions. [2021-11-05 12:19:52,056 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 474 transitions. Word has length 62 [2021-11-05 12:19:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:52,056 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 474 transitions. [2021-11-05 12:19:52,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 12:19:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 474 transitions. [2021-11-05 12:19:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 12:19:52,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:52,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:52,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:19:52,057 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash -531358058, now seen corresponding path program 1 times [2021-11-05 12:19:52,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:52,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109948307] [2021-11-05 12:19:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:52,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:52,376 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 12:19:52,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:52,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109948307] [2021-11-05 12:19:52,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109948307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:52,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:52,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:19:52,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919657537] [2021-11-05 12:19:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:52,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:19:52,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:19:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:19:52,377 INFO L87 Difference]: Start difference. First operand 406 states and 474 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 12:19:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:53,117 INFO L93 Difference]: Finished difference Result 820 states and 952 transitions. [2021-11-05 12:19:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:19:53,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-05 12:19:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:53,118 INFO L225 Difference]: With dead ends: 820 [2021-11-05 12:19:53,119 INFO L226 Difference]: Without dead ends: 478 [2021-11-05 12:19:53,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 233.93ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:19:53,120 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 101 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 553.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 589.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:53,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 1236 Invalid, 223 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 589.54ms Time] [2021-11-05 12:19:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-05 12:19:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 392. [2021-11-05 12:19:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 383 states have (on average 1.1879895561357703) internal successors, (455), 391 states have internal predecessors, (455), 0 states have call successors, (0), 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 12:19:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 455 transitions. [2021-11-05 12:19:53,137 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 455 transitions. Word has length 62 [2021-11-05 12:19:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:53,138 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 455 transitions. [2021-11-05 12:19:53,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 12:19:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 455 transitions. [2021-11-05 12:19:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:19:53,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:53,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:53,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:19:53,140 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:19:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -228850015, now seen corresponding path program 1 times [2021-11-05 12:19:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:53,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095782232] [2021-11-05 12:19:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:53,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:55,560 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 12:19:55,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:55,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095782232] [2021-11-05 12:19:55,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095782232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:55,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:55,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:19:55,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448195759] [2021-11-05 12:19:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:55,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:19:55,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:55,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:19:55,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:19:55,561 INFO L87 Difference]: Start difference. First operand 392 states and 455 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:19:57,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:59,706 WARN L515 Checker$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 12:20:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:00,410 INFO L93 Difference]: Finished difference Result 779 states and 904 transitions. [2021-11-05 12:20:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:20:00,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 12:20:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:00,411 INFO L225 Difference]: With dead ends: 779 [2021-11-05 12:20:00,411 INFO L226 Difference]: Without dead ends: 392 [2021-11-05 12:20:00,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 387.65ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:20:00,412 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 262 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4487.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4684.06ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:00,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 1163 Invalid, 159 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 4684.06ms Time] [2021-11-05 12:20:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-05 12:20:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-05 12:20:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 383 states have (on average 1.185378590078329) internal successors, (454), 391 states have internal predecessors, (454), 0 states have call successors, (0), 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 12:20:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 454 transitions. [2021-11-05 12:20:00,427 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 454 transitions. Word has length 64 [2021-11-05 12:20:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:00,427 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 454 transitions. [2021-11-05 12:20:00,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 454 transitions. [2021-11-05 12:20:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 12:20:00,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:00,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:00,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:20:00,428 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:20:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1044654306, now seen corresponding path program 1 times [2021-11-05 12:20:00,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:00,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909802538] [2021-11-05 12:20:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:00,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:03,648 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 12:20:03,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:03,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909802538] [2021-11-05 12:20:03,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909802538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:03,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:03,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:20:03,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229619701] [2021-11-05 12:20:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:03,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:20:03,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:20:03,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:20:03,649 INFO L87 Difference]: Start difference. First operand 392 states and 454 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:05,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:07,787 WARN L515 Checker$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 12:20:09,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:09,247 INFO L93 Difference]: Finished difference Result 522 states and 593 transitions. [2021-11-05 12:20:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:20:09,248 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 12:20:09,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:09,249 INFO L225 Difference]: With dead ends: 522 [2021-11-05 12:20:09,250 INFO L226 Difference]: Without dead ends: 478 [2021-11-05 12:20:09,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 750.56ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:20:09,251 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 981 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4904.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5216.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:09,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 686 Invalid, 322 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [51 Valid, 269 Invalid, 2 Unknown, 0 Unchecked, 5216.54ms Time] [2021-11-05 12:20:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-05 12:20:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 370. [2021-11-05 12:20:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 361 states have (on average 1.18005540166205) internal successors, (426), 369 states have internal predecessors, (426), 0 states have call successors, (0), 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 12:20:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2021-11-05 12:20:09,265 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 65 [2021-11-05 12:20:09,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:09,265 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2021-11-05 12:20:09,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2021-11-05 12:20:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 12:20:09,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:09,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:09,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:20:09,266 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:20:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1817302808, now seen corresponding path program 1 times [2021-11-05 12:20:09,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:09,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757248753] [2021-11-05 12:20:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:09,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:09,907 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 12:20:09,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:09,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757248753] [2021-11-05 12:20:09,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757248753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:09,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:09,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:20:09,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661624843] [2021-11-05 12:20:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:09,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:20:09,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:20:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:20:09,909 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:11,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:14,091 WARN L515 Checker$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 12:20:16,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:18,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:20,395 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 12:20:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:23,674 INFO L93 Difference]: Finished difference Result 635 states and 701 transitions. [2021-11-05 12:20:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:20:23,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 12:20:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:23,676 INFO L225 Difference]: With dead ends: 635 [2021-11-05 12:20:23,676 INFO L226 Difference]: Without dead ends: 548 [2021-11-05 12:20:23,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1121.15ms TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:20:23,677 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 563 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 35 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12168.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.64ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12845.20ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:23,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1850 Invalid, 737 Unknown, 0 Unchecked, 8.64ms Time], IncrementalHoareTripleChecker [35 Valid, 697 Invalid, 5 Unknown, 0 Unchecked, 12845.20ms Time] [2021-11-05 12:20:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-05 12:20:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 395. [2021-11-05 12:20:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 386 states have (on average 1.1683937823834196) internal successors, (451), 394 states have internal predecessors, (451), 0 states have call successors, (0), 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 12:20:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 451 transitions. [2021-11-05 12:20:23,691 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 451 transitions. Word has length 65 [2021-11-05 12:20:23,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:23,691 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 451 transitions. [2021-11-05 12:20:23,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 451 transitions. [2021-11-05 12:20:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 12:20:23,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:23,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:23,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:20:23,692 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:20:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash -549391786, now seen corresponding path program 1 times [2021-11-05 12:20:23,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:23,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847830166] [2021-11-05 12:20:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:23,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:24,218 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 12:20:24,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:24,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847830166] [2021-11-05 12:20:24,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847830166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:24,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:24,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:20:24,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288492924] [2021-11-05 12:20:24,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:24,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:20:24,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:24,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:20:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:20:24,220 INFO L87 Difference]: Start difference. First operand 395 states and 451 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:26,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:28,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:30,446 WARN L515 Checker$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 12:20:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:32,519 INFO L93 Difference]: Finished difference Result 814 states and 915 transitions. [2021-11-05 12:20:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:20:32,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 12:20:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:32,521 INFO L225 Difference]: With dead ends: 814 [2021-11-05 12:20:32,521 INFO L226 Difference]: Without dead ends: 545 [2021-11-05 12:20:32,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 587.75ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:20:32,522 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 533 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 36 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7495.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7842.22ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:32,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1506 Invalid, 534 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [36 Valid, 495 Invalid, 3 Unknown, 0 Unchecked, 7842.22ms Time] [2021-11-05 12:20:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-05 12:20:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 397. [2021-11-05 12:20:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 388 states have (on average 1.1649484536082475) internal successors, (452), 396 states have internal predecessors, (452), 0 states have call successors, (0), 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 12:20:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 452 transitions. [2021-11-05 12:20:32,551 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 452 transitions. Word has length 65 [2021-11-05 12:20:32,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:32,551 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 452 transitions. [2021-11-05 12:20:32,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 452 transitions. [2021-11-05 12:20:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 12:20:32,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:32,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:32,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:20:32,554 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:20:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -408843176, now seen corresponding path program 1 times [2021-11-05 12:20:32,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:32,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109007993] [2021-11-05 12:20:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:32,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:37,271 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 12:20:37,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:37,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109007993] [2021-11-05 12:20:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109007993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:37,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:37,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:20:37,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314234645] [2021-11-05 12:20:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:37,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:20:37,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:20:37,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:20:37,272 INFO L87 Difference]: Start difference. First operand 397 states and 452 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:39,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:41,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:44,270 INFO L93 Difference]: Finished difference Result 552 states and 615 transitions. [2021-11-05 12:20:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:20:44,270 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 12:20:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:44,272 INFO L225 Difference]: With dead ends: 552 [2021-11-05 12:20:44,272 INFO L226 Difference]: Without dead ends: 506 [2021-11-05 12:20:44,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1758.17ms TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:20:44,273 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1160 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 71 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5601.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5903.83ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:44,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 907 Invalid, 566 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [71 Valid, 493 Invalid, 2 Unknown, 0 Unchecked, 5903.83ms Time] [2021-11-05 12:20:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-05 12:20:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 445. [2021-11-05 12:20:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 436 states have (on average 1.1674311926605505) internal successors, (509), 444 states have internal predecessors, (509), 0 states have call successors, (0), 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 12:20:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 509 transitions. [2021-11-05 12:20:44,297 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 509 transitions. Word has length 65 [2021-11-05 12:20:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:44,298 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 509 transitions. [2021-11-05 12:20:44,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 509 transitions. [2021-11-05 12:20:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:20:44,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:44,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:44,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:20:44,299 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:20:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1315946319, now seen corresponding path program 1 times [2021-11-05 12:20:44,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:44,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339550274] [2021-11-05 12:20:44,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:44,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:45,111 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 12:20:45,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:45,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339550274] [2021-11-05 12:20:45,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339550274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:20:45,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:20:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:20:45,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292398878] [2021-11-05 12:20:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:20:45,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:20:45,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:20:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:20:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:20:45,112 INFO L87 Difference]: Start difference. First operand 445 states and 509 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:47,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:49,260 WARN L515 Checker$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 12:20:51,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:53,473 WARN L515 Checker$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 12:20:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:56,979 INFO L93 Difference]: Finished difference Result 939 states and 1058 transitions. [2021-11-05 12:20:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 12:20:56,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-05 12:20:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:56,981 INFO L225 Difference]: With dead ends: 939 [2021-11-05 12:20:56,981 INFO L226 Difference]: Without dead ends: 603 [2021-11-05 12:20:56,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1446.97ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:20:56,982 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 935 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 64 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10222.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.07ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10715.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:56,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1472 Invalid, 810 Unknown, 0 Unchecked, 9.07ms Time], IncrementalHoareTripleChecker [64 Valid, 742 Invalid, 4 Unknown, 0 Unchecked, 10715.11ms Time] [2021-11-05 12:20:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-05 12:20:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 445. [2021-11-05 12:20:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 436 states have (on average 1.158256880733945) internal successors, (505), 444 states have internal predecessors, (505), 0 states have call successors, (0), 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 12:20:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 505 transitions. [2021-11-05 12:20:57,002 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 505 transitions. Word has length 67 [2021-11-05 12:20:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:57,003 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 505 transitions. [2021-11-05 12:20:57,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:20:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 505 transitions. [2021-11-05 12:20:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:20:57,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:57,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:57,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:20:57,004 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:20:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:57,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1748523535, now seen corresponding path program 1 times [2021-11-05 12:20:57,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:57,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560315563] [2021-11-05 12:20:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:57,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:00,042 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 12:21:00,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:00,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560315563] [2021-11-05 12:21:00,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560315563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:00,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:00,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:21:00,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791348372] [2021-11-05 12:21:00,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:00,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:21:00,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:21:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:21:00,060 INFO L87 Difference]: Start difference. First operand 445 states and 505 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:02,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:04,185 WARN L515 Checker$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 12:21:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:18,562 INFO L93 Difference]: Finished difference Result 866 states and 973 transitions. [2021-11-05 12:21:18,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-05 12:21:18,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-05 12:21:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:18,565 INFO L225 Difference]: With dead ends: 866 [2021-11-05 12:21:18,565 INFO L226 Difference]: Without dead ends: 842 [2021-11-05 12:21:18,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 9092.88ms TimeCoverageRelationStatistics Valid=1195, Invalid=5125, Unknown=0, NotChecked=0, Total=6320 [2021-11-05 12:21:18,568 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1484 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 387 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9785.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.71ms SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10313.77ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:18,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 2832 Invalid, 2420 Unknown, 0 Unchecked, 26.71ms Time], IncrementalHoareTripleChecker [387 Valid, 2031 Invalid, 2 Unknown, 0 Unchecked, 10313.77ms Time] [2021-11-05 12:21:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-05 12:21:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 570. [2021-11-05 12:21:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 562 states have (on average 1.1743772241992882) internal successors, (660), 569 states have internal predecessors, (660), 0 states have call successors, (0), 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 12:21:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 660 transitions. [2021-11-05 12:21:18,596 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 660 transitions. Word has length 67 [2021-11-05 12:21:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:18,596 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 660 transitions. [2021-11-05 12:21:18,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:21:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 660 transitions. [2021-11-05 12:21:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:21:18,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:18,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:18,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:21:18,597 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:18,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash -238921928, now seen corresponding path program 1 times [2021-11-05 12:21:18,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:18,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632132215] [2021-11-05 12:21:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:18,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:23,928 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 12:21:23,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:23,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632132215] [2021-11-05 12:21:23,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632132215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:23,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:23,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:21:23,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379967062] [2021-11-05 12:21:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:23,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:21:23,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:21:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:21:23,929 INFO L87 Difference]: Start difference. First operand 570 states and 660 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 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 12:21:25,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:28,094 WARN L515 Checker$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 12:21:30,203 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 12:21:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:31,711 INFO L93 Difference]: Finished difference Result 648 states and 747 transitions. [2021-11-05 12:21:31,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:21:31,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 12:21:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:31,713 INFO L225 Difference]: With dead ends: 648 [2021-11-05 12:21:31,713 INFO L226 Difference]: Without dead ends: 646 [2021-11-05 12:21:31,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 773.85ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:21:31,714 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 914 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6860.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7274.37ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:31,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 681 Invalid, 301 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [29 Valid, 269 Invalid, 3 Unknown, 0 Unchecked, 7274.37ms Time] [2021-11-05 12:21:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-11-05 12:21:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 568. [2021-11-05 12:21:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 561 states have (on average 1.1586452762923352) internal successors, (650), 567 states have internal predecessors, (650), 0 states have call successors, (0), 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 12:21:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 650 transitions. [2021-11-05 12:21:31,744 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 650 transitions. Word has length 71 [2021-11-05 12:21:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:31,744 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 650 transitions. [2021-11-05 12:21:31,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 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 12:21:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 650 transitions. [2021-11-05 12:21:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:21:31,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:31,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:31,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:21:31,746 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 366062748, now seen corresponding path program 1 times [2021-11-05 12:21:31,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:31,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482265251] [2021-11-05 12:21:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:31,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:34,509 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 12:21:34,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:34,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482265251] [2021-11-05 12:21:34,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482265251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:34,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:34,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:21:34,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27904133] [2021-11-05 12:21:34,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:34,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:21:34,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:21:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:21:34,511 INFO L87 Difference]: Start difference. First operand 568 states and 650 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 12:21:36,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:38,663 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 12:21:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:39,665 INFO L93 Difference]: Finished difference Result 570 states and 651 transitions. [2021-11-05 12:21:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:21:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-05 12:21:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:39,667 INFO L225 Difference]: With dead ends: 570 [2021-11-05 12:21:39,667 INFO L226 Difference]: Without dead ends: 534 [2021-11-05 12:21:39,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 660.25ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:21:39,668 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 429 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4563.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4799.97ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:39,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1085 Invalid, 230 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [17 Valid, 211 Invalid, 2 Unknown, 0 Unchecked, 4799.97ms Time] [2021-11-05 12:21:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-05 12:21:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2021-11-05 12:21:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 527 states have (on average 1.1650853889943074) internal successors, (614), 533 states have internal predecessors, (614), 0 states have call successors, (0), 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 12:21:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 614 transitions. [2021-11-05 12:21:39,690 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 614 transitions. Word has length 75 [2021-11-05 12:21:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:39,690 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 614 transitions. [2021-11-05 12:21:39,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 12:21:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 614 transitions. [2021-11-05 12:21:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 12:21:39,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:39,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:39,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:21:39,691 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash -966838198, now seen corresponding path program 1 times [2021-11-05 12:21:39,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:39,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859408863] [2021-11-05 12:21:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:39,868 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 12:21:39,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:39,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859408863] [2021-11-05 12:21:39,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859408863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:39,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:39,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:21:39,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766456260] [2021-11-05 12:21:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:39,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:21:39,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:21:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:21:39,870 INFO L87 Difference]: Start difference. First operand 534 states and 614 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 12:21:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:39,959 INFO L93 Difference]: Finished difference Result 1186 states and 1353 transitions. [2021-11-05 12:21:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:21:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-05 12:21:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:39,962 INFO L225 Difference]: With dead ends: 1186 [2021-11-05 12:21:39,962 INFO L226 Difference]: Without dead ends: 902 [2021-11-05 12:21:39,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:21:39,965 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 240 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:39,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 760 Invalid, 10 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 27.07ms Time] [2021-11-05 12:21:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-05 12:21:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 538. [2021-11-05 12:21:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 531 states have (on average 1.1638418079096045) internal successors, (618), 537 states have internal predecessors, (618), 0 states have call successors, (0), 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 12:21:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 618 transitions. [2021-11-05 12:21:39,991 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 618 transitions. Word has length 79 [2021-11-05 12:21:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:39,992 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 618 transitions. [2021-11-05 12:21:39,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 12:21:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 618 transitions. [2021-11-05 12:21:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 12:21:39,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:39,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:21:39,993 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -928626092, now seen corresponding path program 1 times [2021-11-05 12:21:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:39,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113510946] [2021-11-05 12:21:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:39,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:40,192 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 12:21:40,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:40,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113510946] [2021-11-05 12:21:40,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113510946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:40,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:40,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:21:40,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744790033] [2021-11-05 12:21:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:40,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:21:40,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:21:40,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:21:40,193 INFO L87 Difference]: Start difference. First operand 538 states and 618 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 12:21:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:40,306 INFO L93 Difference]: Finished difference Result 779 states and 887 transitions. [2021-11-05 12:21:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:21:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-05 12:21:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:40,307 INFO L225 Difference]: With dead ends: 779 [2021-11-05 12:21:40,307 INFO L226 Difference]: Without dead ends: 527 [2021-11-05 12:21:40,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.47ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:21:40,309 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 131 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.39ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:40,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 881 Invalid, 16 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 42.39ms Time] [2021-11-05 12:21:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-11-05 12:21:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 422. [2021-11-05 12:21:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 415 states have (on average 1.1542168674698796) internal successors, (479), 421 states have internal predecessors, (479), 0 states have call successors, (0), 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 12:21:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 479 transitions. [2021-11-05 12:21:40,326 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 479 transitions. Word has length 81 [2021-11-05 12:21:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:40,326 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 479 transitions. [2021-11-05 12:21:40,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 12:21:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 479 transitions. [2021-11-05 12:21:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:21:40,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:40,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:40,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:21:40,327 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1338070713, now seen corresponding path program 1 times [2021-11-05 12:21:40,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:40,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950410206] [2021-11-05 12:21:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:40,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:40,640 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 12:21:40,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:40,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950410206] [2021-11-05 12:21:40,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950410206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:40,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:40,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 12:21:40,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557262769] [2021-11-05 12:21:40,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:40,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 12:21:40,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 12:21:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:21:40,642 INFO L87 Difference]: Start difference. First operand 422 states and 479 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 12:21:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:40,673 INFO L93 Difference]: Finished difference Result 591 states and 669 transitions. [2021-11-05 12:21:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 12:21:40,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-05 12:21:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:40,675 INFO L225 Difference]: With dead ends: 591 [2021-11-05 12:21:40,675 INFO L226 Difference]: Without dead ends: 416 [2021-11-05 12:21:40,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:21:40,676 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 123 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.28ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:40,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 231 Invalid, 3 Unknown, 0 Unchecked, 0.25ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.28ms Time] [2021-11-05 12:21:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-05 12:21:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-11-05 12:21:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 409 states have (on average 1.1491442542787287) internal successors, (470), 415 states have internal predecessors, (470), 0 states have call successors, (0), 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 12:21:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 470 transitions. [2021-11-05 12:21:40,698 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 470 transitions. Word has length 82 [2021-11-05 12:21:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:40,698 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 470 transitions. [2021-11-05 12:21:40,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 12:21:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 470 transitions. [2021-11-05 12:21:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 12:21:40,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:40,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:40,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:21:40,699 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:40,700 INFO L85 PathProgramCache]: Analyzing trace with hash 215973371, now seen corresponding path program 1 times [2021-11-05 12:21:40,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:40,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725620961] [2021-11-05 12:21:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:40,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:40,935 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 12:21:40,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:40,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725620961] [2021-11-05 12:21:40,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725620961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:40,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:40,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:21:40,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686920195] [2021-11-05 12:21:40,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:40,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:21:40,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:21:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:21:40,939 INFO L87 Difference]: Start difference. First operand 416 states and 470 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 12:21:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:41,034 INFO L93 Difference]: Finished difference Result 811 states and 918 transitions. [2021-11-05 12:21:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:21:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-05 12:21:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:41,036 INFO L225 Difference]: With dead ends: 811 [2021-11-05 12:21:41,036 INFO L226 Difference]: Without dead ends: 521 [2021-11-05 12:21:41,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.34ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:21:41,037 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 69 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.10ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:41,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 912 Invalid, 15 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 40.10ms Time] [2021-11-05 12:21:41,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-05 12:21:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 416. [2021-11-05 12:21:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 409 states have (on average 1.1442542787286063) internal successors, (468), 415 states have internal predecessors, (468), 0 states have call successors, (0), 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 12:21:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 468 transitions. [2021-11-05 12:21:41,060 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 468 transitions. Word has length 83 [2021-11-05 12:21:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:41,060 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 468 transitions. [2021-11-05 12:21:41,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 12:21:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 468 transitions. [2021-11-05 12:21:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:21:41,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:41,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:41,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:21:41,064 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1849527591, now seen corresponding path program 1 times [2021-11-05 12:21:41,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:41,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455902162] [2021-11-05 12:21:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:41,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:41,461 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 12:21:41,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:41,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455902162] [2021-11-05 12:21:41,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455902162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:41,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:41,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:21:41,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388263740] [2021-11-05 12:21:41,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:41,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:21:41,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:21:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:21:41,465 INFO L87 Difference]: Start difference. First operand 416 states and 468 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 12:21:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:41,533 INFO L93 Difference]: Finished difference Result 704 states and 798 transitions. [2021-11-05 12:21:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:21:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 12:21:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:41,535 INFO L225 Difference]: With dead ends: 704 [2021-11-05 12:21:41,536 INFO L226 Difference]: Without dead ends: 408 [2021-11-05 12:21:41,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:21:41,537 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 229 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:41,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 280 Invalid, 8 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 28.49ms Time] [2021-11-05 12:21:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-05 12:21:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2021-11-05 12:21:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 401 states have (on average 1.1371571072319202) internal successors, (456), 407 states have internal predecessors, (456), 0 states have call successors, (0), 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 12:21:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 456 transitions. [2021-11-05 12:21:41,553 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 456 transitions. Word has length 84 [2021-11-05 12:21:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:41,553 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 456 transitions. [2021-11-05 12:21:41,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 12:21:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 456 transitions. [2021-11-05 12:21:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:21:41,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:41,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:41,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:21:41,555 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1413845025, now seen corresponding path program 1 times [2021-11-05 12:21:41,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:41,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777943633] [2021-11-05 12:21:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:41,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:42,806 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 12:21:42,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:42,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777943633] [2021-11-05 12:21:42,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777943633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:42,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:42,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:21:42,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853384643] [2021-11-05 12:21:42,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:42,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:21:42,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:42,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:21:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:21:42,807 INFO L87 Difference]: Start difference. First operand 408 states and 456 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:21:44,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:46,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:49,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:21:51,914 INFO L93 Difference]: Finished difference Result 698 states and 773 transitions. [2021-11-05 12:21:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:21:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-05 12:21:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:21:51,917 INFO L225 Difference]: With dead ends: 698 [2021-11-05 12:21:51,917 INFO L226 Difference]: Without dead ends: 623 [2021-11-05 12:21:51,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1678.88ms TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:21:51,918 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 1439 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 79 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7544.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.85ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7973.01ms IncrementalHoareTripleChecker+Time [2021-11-05 12:21:51,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1439 Valid, 1121 Invalid, 621 Unknown, 0 Unchecked, 7.85ms Time], IncrementalHoareTripleChecker [79 Valid, 539 Invalid, 3 Unknown, 0 Unchecked, 7973.01ms Time] [2021-11-05 12:21:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-11-05 12:21:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 446. [2021-11-05 12:21:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 439 states have (on average 1.14123006833713) internal successors, (501), 445 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:21:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 501 transitions. [2021-11-05 12:21:51,950 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 501 transitions. Word has length 85 [2021-11-05 12:21:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:21:51,950 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 501 transitions. [2021-11-05 12:21:51,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:21:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 501 transitions. [2021-11-05 12:21:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:21:51,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:21:51,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:21:51,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:21:51,956 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:21:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:21:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1448112089, now seen corresponding path program 1 times [2021-11-05 12:21:51,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:21:51,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622476294] [2021-11-05 12:21:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:21:51,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:21:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:21:53,891 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 12:21:53,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:21:53,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622476294] [2021-11-05 12:21:53,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622476294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:21:53,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:21:53,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:21:53,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635406844] [2021-11-05 12:21:53,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:21:53,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:21:53,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:21:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:21:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:21:53,893 INFO L87 Difference]: Start difference. First operand 446 states and 501 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:21:55,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:21:58,059 WARN L515 Checker$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 12:22:00,174 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 12:22:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:01,136 INFO L93 Difference]: Finished difference Result 537 states and 598 transitions. [2021-11-05 12:22:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:22:01,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-05 12:22:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:01,138 INFO L225 Difference]: With dead ends: 537 [2021-11-05 12:22:01,138 INFO L226 Difference]: Without dead ends: 285 [2021-11-05 12:22:01,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 710.76ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:22:01,138 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 612 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6430.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6782.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:01,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 598 Invalid, 127 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 3 Unknown, 0 Unchecked, 6782.86ms Time] [2021-11-05 12:22:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-05 12:22:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 262. [2021-11-05 12:22:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 255 states have (on average 1.1215686274509804) internal successors, (286), 261 states have internal predecessors, (286), 0 states have call successors, (0), 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 12:22:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 286 transitions. [2021-11-05 12:22:01,149 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 286 transitions. Word has length 85 [2021-11-05 12:22:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:01,150 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 286 transitions. [2021-11-05 12:22:01,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 286 transitions. [2021-11-05 12:22:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:22:01,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:01,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:01,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 12:22:01,151 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:22:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:01,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1632699743, now seen corresponding path program 1 times [2021-11-05 12:22:01,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:01,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522886340] [2021-11-05 12:22:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:01,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:02,650 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 12:22:02,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:02,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522886340] [2021-11-05 12:22:02,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522886340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:02,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:02,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:22:02,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056723935] [2021-11-05 12:22:02,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:02,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:22:02,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:02,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:22:02,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:22:02,653 INFO L87 Difference]: Start difference. First operand 262 states and 286 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:04,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:06,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:08,936 WARN L515 Checker$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 12:22:11,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:13,130 WARN L515 Checker$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 12:22:15,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:17,326 WARN L515 Checker$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 12:22:19,454 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 12:22:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:25,296 INFO L93 Difference]: Finished difference Result 565 states and 616 transitions. [2021-11-05 12:22:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:22:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-05 12:22:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:25,298 INFO L225 Difference]: With dead ends: 565 [2021-11-05 12:22:25,298 INFO L226 Difference]: Without dead ends: 490 [2021-11-05 12:22:25,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3887.55ms TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 12:22:25,299 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 1225 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 72 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18449.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.65ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19427.05ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:25,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 1518 Invalid, 862 Unknown, 0 Unchecked, 10.65ms Time], IncrementalHoareTripleChecker [72 Valid, 782 Invalid, 8 Unknown, 0 Unchecked, 19427.05ms Time] [2021-11-05 12:22:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-05 12:22:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 331. [2021-11-05 12:22:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 324 states have (on average 1.123456790123457) internal successors, (364), 330 states have internal predecessors, (364), 0 states have call successors, (0), 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 12:22:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 364 transitions. [2021-11-05 12:22:25,314 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 364 transitions. Word has length 85 [2021-11-05 12:22:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:25,314 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 364 transitions. [2021-11-05 12:22:25,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 364 transitions. [2021-11-05 12:22:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:22:25,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:25,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:25,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 12:22:25,316 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:22:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:25,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1229257371, now seen corresponding path program 1 times [2021-11-05 12:22:25,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:25,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654943765] [2021-11-05 12:22:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:25,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:29,966 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 12:22:29,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:29,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654943765] [2021-11-05 12:22:29,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654943765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:29,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:29,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:22:29,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918274829] [2021-11-05 12:22:29,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:29,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:22:29,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:22:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:22:29,968 INFO L87 Difference]: Start difference. First operand 331 states and 364 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:32,016 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 12:22:34,130 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 12:22:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:35,413 INFO L93 Difference]: Finished difference Result 439 states and 481 transitions. [2021-11-05 12:22:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:22:35,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-05 12:22:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:35,415 INFO L225 Difference]: With dead ends: 439 [2021-11-05 12:22:35,415 INFO L226 Difference]: Without dead ends: 324 [2021-11-05 12:22:35,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1045.97ms TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:22:35,415 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1083 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4617.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.60ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4845.95ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:35,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 499 Invalid, 225 Unknown, 0 Unchecked, 3.60ms Time], IncrementalHoareTripleChecker [29 Valid, 194 Invalid, 2 Unknown, 0 Unchecked, 4845.95ms Time] [2021-11-05 12:22:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-05 12:22:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 309. [2021-11-05 12:22:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 302 states have (on average 1.1125827814569536) internal successors, (336), 308 states have internal predecessors, (336), 0 states have call successors, (0), 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 12:22:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 336 transitions. [2021-11-05 12:22:35,429 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 336 transitions. Word has length 85 [2021-11-05 12:22:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:35,429 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 336 transitions. [2021-11-05 12:22:35,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 336 transitions. [2021-11-05 12:22:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:22:35,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:35,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:35,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 12:22:35,430 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:22:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1986856805, now seen corresponding path program 1 times [2021-11-05 12:22:35,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:35,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079376908] [2021-11-05 12:22:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:35,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:22:35,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:35,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079376908] [2021-11-05 12:22:35,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079376908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:35,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:35,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:22:35,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067960865] [2021-11-05 12:22:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:22:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:22:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:22:35,615 INFO L87 Difference]: Start difference. First operand 309 states and 336 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:22:35,685 INFO L93 Difference]: Finished difference Result 489 states and 535 transitions. [2021-11-05 12:22:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:22:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-05 12:22:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:22:35,688 INFO L225 Difference]: With dead ends: 489 [2021-11-05 12:22:35,688 INFO L226 Difference]: Without dead ends: 366 [2021-11-05 12:22:35,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:22:35,689 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 70 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.80ms IncrementalHoareTripleChecker+Time [2021-11-05 12:22:35,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 550 Invalid, 10 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 31.80ms Time] [2021-11-05 12:22:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-05 12:22:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 309. [2021-11-05 12:22:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 302 states have (on average 1.1059602649006623) internal successors, (334), 308 states have internal predecessors, (334), 0 states have call successors, (0), 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 12:22:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 334 transitions. [2021-11-05 12:22:35,701 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 334 transitions. Word has length 85 [2021-11-05 12:22:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:22:35,702 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 334 transitions. [2021-11-05 12:22:35,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 334 transitions. [2021-11-05 12:22:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:22:35,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:22:35,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:22:35,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 12:22:35,703 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:22:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:22:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1794218655, now seen corresponding path program 1 times [2021-11-05 12:22:35,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:22:35,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761265473] [2021-11-05 12:22:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:22:35,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:22:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:22:41,394 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 12:22:41,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:22:41,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761265473] [2021-11-05 12:22:41,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761265473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:22:41,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:22:41,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-05 12:22:41,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114814443] [2021-11-05 12:22:41,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:22:41,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-05 12:22:41,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:22:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-05 12:22:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:22:41,396 INFO L87 Difference]: Start difference. First operand 309 states and 334 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:22:43,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:45,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:47,678 WARN L515 Checker$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 12:22:49,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:51,933 WARN L515 Checker$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 12:22:54,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:22:56,167 WARN L515 Checker$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 12:22:58,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:00,426 WARN L515 Checker$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 12:23:02,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:04,645 WARN L515 Checker$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 12:23:09,483 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 12:23:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:23:14,824 INFO L93 Difference]: Finished difference Result 412 states and 442 transitions. [2021-11-05 12:23:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 12:23:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-05 12:23:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:23:14,826 INFO L225 Difference]: With dead ends: 412 [2021-11-05 12:23:14,826 INFO L226 Difference]: Without dead ends: 347 [2021-11-05 12:23:14,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 7176.12ms TimeCoverageRelationStatistics Valid=502, Invalid=1850, Unknown=0, NotChecked=0, Total=2352 [2021-11-05 12:23:14,827 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 1710 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 84 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26216.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27730.37ms IncrementalHoareTripleChecker+Time [2021-11-05 12:23:14,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 957 Invalid, 632 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [84 Valid, 537 Invalid, 11 Unknown, 0 Unchecked, 27730.37ms Time] [2021-11-05 12:23:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-05 12:23:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 253. [2021-11-05 12:23:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 246 states have (on average 1.0934959349593496) internal successors, (269), 252 states have internal predecessors, (269), 0 states have call successors, (0), 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 12:23:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 269 transitions. [2021-11-05 12:23:14,840 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 269 transitions. Word has length 85 [2021-11-05 12:23:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:23:14,841 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 269 transitions. [2021-11-05 12:23:14,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 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 12:23:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 269 transitions. [2021-11-05 12:23:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:23:14,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:23:14,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:23:14,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 12:23:14,842 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:23:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:23:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash 772483113, now seen corresponding path program 1 times [2021-11-05 12:23:14,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:23:14,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628604163] [2021-11-05 12:23:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:23:14,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:15,053 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 12:23:15,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:15,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628604163] [2021-11-05 12:23:15,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628604163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:15,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:15,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:23:15,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833846988] [2021-11-05 12:23:15,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:15,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:23:15,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:15,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:23:15,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:23:15,055 INFO L87 Difference]: Start difference. First operand 253 states and 269 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 12:23:15,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:23:15,177 INFO L93 Difference]: Finished difference Result 300 states and 319 transitions. [2021-11-05 12:23:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:23:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-05 12:23:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:23:15,178 INFO L225 Difference]: With dead ends: 300 [2021-11-05 12:23:15,178 INFO L226 Difference]: Without dead ends: 200 [2021-11-05 12:23:15,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 150.93ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:23:15,179 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 216 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.62ms IncrementalHoareTripleChecker+Time [2021-11-05 12:23:15,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 470 Invalid, 15 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 37.62ms Time] [2021-11-05 12:23:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-05 12:23:15,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 173. [2021-11-05 12:23:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.0778443113772456) internal successors, (180), 172 states have internal predecessors, (180), 0 states have call successors, (0), 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 12:23:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2021-11-05 12:23:15,187 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 87 [2021-11-05 12:23:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:23:15,188 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2021-11-05 12:23:15,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 12:23:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2021-11-05 12:23:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:23:15,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:23:15,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:23:15,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 12:23:15,189 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:23:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:23:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1669142040, now seen corresponding path program 1 times [2021-11-05 12:23:15,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:23:15,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116810450] [2021-11-05 12:23:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:23:15,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:16,790 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 12:23:16,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:16,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116810450] [2021-11-05 12:23:16,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116810450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:16,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:16,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:23:16,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440087324] [2021-11-05 12:23:16,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:16,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:23:16,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:16,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:23:16,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:23:16,791 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 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 12:23:18,840 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 12:23:20,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:23,048 WARN L515 Checker$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 12:23:25,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:27,293 WARN L515 Checker$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 12:23:29,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:31,501 WARN L515 Checker$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 12:23:33,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:23:37,380 INFO L93 Difference]: Finished difference Result 363 states and 379 transitions. [2021-11-05 12:23:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:23:37,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-05 12:23:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:23:37,381 INFO L225 Difference]: With dead ends: 363 [2021-11-05 12:23:37,381 INFO L226 Difference]: Without dead ends: 297 [2021-11-05 12:23:37,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2592.18ms TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2021-11-05 12:23:37,382 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 1161 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 66 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17809.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.28ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18803.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:23:37,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 1100 Invalid, 664 Unknown, 0 Unchecked, 8.28ms Time], IncrementalHoareTripleChecker [66 Valid, 590 Invalid, 8 Unknown, 0 Unchecked, 18803.74ms Time] [2021-11-05 12:23:37,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-05 12:23:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 238. [2021-11-05 12:23:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.0732758620689655) internal successors, (249), 237 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 12:23:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 249 transitions. [2021-11-05 12:23:37,394 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 249 transitions. Word has length 87 [2021-11-05 12:23:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:23:37,394 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 249 transitions. [2021-11-05 12:23:37,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 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 12:23:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 249 transitions. [2021-11-05 12:23:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:23:37,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:23:37,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:37,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 12:23:37,396 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:23:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:23:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2024973480, now seen corresponding path program 1 times [2021-11-05 12:23:37,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:23:37,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392024463] [2021-11-05 12:23:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:23:37,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:23:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:23:43,085 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 12:23:43,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:23:43,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392024463] [2021-11-05 12:23:43,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392024463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:23:43,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:23:43,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:23:43,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120111293] [2021-11-05 12:23:43,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:23:43,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:23:43,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:23:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:23:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:23:43,088 INFO L87 Difference]: Start difference. First operand 238 states and 249 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 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 12:23:45,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:47,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:49,310 WARN L515 Checker$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 12:23:51,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:53,491 WARN L515 Checker$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 12:23:55,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:23:57,649 WARN L515 Checker$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 12:23:59,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:01,837 WARN L515 Checker$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 12:24:03,946 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 12:24:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:15,393 INFO L93 Difference]: Finished difference Result 307 states and 322 transitions. [2021-11-05 12:24:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-05 12:24:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-05 12:24:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:15,394 INFO L225 Difference]: With dead ends: 307 [2021-11-05 12:24:15,394 INFO L226 Difference]: Without dead ends: 303 [2021-11-05 12:24:15,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 10477.11ms TimeCoverageRelationStatistics Valid=614, Invalid=1936, Unknown=0, NotChecked=0, Total=2550 [2021-11-05 12:24:15,395 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 1235 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 259 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22169.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.75ms SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23194.77ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:15,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 626 Invalid, 937 Unknown, 0 Unchecked, 9.75ms Time], IncrementalHoareTripleChecker [259 Valid, 668 Invalid, 10 Unknown, 0 Unchecked, 23194.77ms Time] [2021-11-05 12:24:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-05 12:24:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 229. [2021-11-05 12:24:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 224 states have (on average 1.0714285714285714) internal successors, (240), 228 states have internal predecessors, (240), 0 states have call successors, (0), 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 12:24:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 240 transitions. [2021-11-05 12:24:15,408 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 240 transitions. Word has length 87 [2021-11-05 12:24:15,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:15,408 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 240 transitions. [2021-11-05 12:24:15,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 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 12:24:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 240 transitions. [2021-11-05 12:24:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:24:15,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:15,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:15,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 12:24:15,409 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:24:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1281217789, now seen corresponding path program 1 times [2021-11-05 12:24:15,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:15,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353339899] [2021-11-05 12:24:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:15,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:19,452 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 12:24:19,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:19,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353339899] [2021-11-05 12:24:19,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353339899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:19,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:19,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:24:19,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486815373] [2021-11-05 12:24:19,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:19,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:24:19,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:19,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:24:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:24:19,453 INFO L87 Difference]: Start difference. First operand 229 states and 240 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 16 states have internal predecessors, (95), 0 states have call successors, (0), 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 12:24:21,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:23,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:25,714 WARN L515 Checker$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 12:24:27,835 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 12:24:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:30,022 INFO L93 Difference]: Finished difference Result 286 states and 301 transitions. [2021-11-05 12:24:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:24:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 16 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-05 12:24:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:30,024 INFO L225 Difference]: With dead ends: 286 [2021-11-05 12:24:30,024 INFO L226 Difference]: Without dead ends: 284 [2021-11-05 12:24:30,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2067.86ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:24:30,024 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 666 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 34 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8830.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9334.12ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:30,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 732 Invalid, 286 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [34 Valid, 248 Invalid, 4 Unknown, 0 Unchecked, 9334.12ms Time] [2021-11-05 12:24:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-05 12:24:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 227. [2021-11-05 12:24:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.062780269058296) internal successors, (237), 226 states have internal predecessors, (237), 0 states have call successors, (0), 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 12:24:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 237 transitions. [2021-11-05 12:24:30,039 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 237 transitions. Word has length 95 [2021-11-05 12:24:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:30,040 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 237 transitions. [2021-11-05 12:24:30,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 16 states have internal predecessors, (95), 0 states have call successors, (0), 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 12:24:30,040 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 237 transitions. [2021-11-05 12:24:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 12:24:30,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:30,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:24:30,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-05 12:24:30,041 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:24:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1790609567, now seen corresponding path program 1 times [2021-11-05 12:24:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:30,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641783754] [2021-11-05 12:24:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:30,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:30,184 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 12:24:30,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:30,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641783754] [2021-11-05 12:24:30,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641783754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:30,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:30,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:24:30,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56653015] [2021-11-05 12:24:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:30,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:24:30,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:24:30,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:24:30,185 INFO L87 Difference]: Start difference. First operand 227 states and 237 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 12:24:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:30,234 INFO L93 Difference]: Finished difference Result 284 states and 298 transitions. [2021-11-05 12:24:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:24:30,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-05 12:24:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:30,236 INFO L225 Difference]: With dead ends: 284 [2021-11-05 12:24:30,236 INFO L226 Difference]: Without dead ends: 227 [2021-11-05 12:24:30,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:24:30,236 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 44 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.99ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:30,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 356 Invalid, 6 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 16.99ms Time] [2021-11-05 12:24:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-05 12:24:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-05 12:24:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.053811659192825) internal successors, (235), 226 states have internal predecessors, (235), 0 states have call successors, (0), 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 12:24:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2021-11-05 12:24:30,250 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 103 [2021-11-05 12:24:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2021-11-05 12:24:30,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 12:24:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2021-11-05 12:24:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-05 12:24:30,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:30,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:30,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-05 12:24:30,252 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:24:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash -628052339, now seen corresponding path program 1 times [2021-11-05 12:24:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:30,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873431157] [2021-11-05 12:24:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:30,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:34,344 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 12:24:34,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:34,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873431157] [2021-11-05 12:24:34,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873431157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:34,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:34,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:24:34,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958085005] [2021-11-05 12:24:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:24:34,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:24:34,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:24:34,345 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 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 12:24:36,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:38,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:40,611 WARN L515 Checker$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 12:24:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:42,589 INFO L93 Difference]: Finished difference Result 227 states and 235 transitions. [2021-11-05 12:24:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:24:42,590 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-05 12:24:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:42,591 INFO L225 Difference]: With dead ends: 227 [2021-11-05 12:24:42,591 INFO L226 Difference]: Without dead ends: 225 [2021-11-05 12:24:42,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2335.32ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:24:42,591 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 579 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 36 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6575.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6989.40ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:42,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 279 Invalid, 201 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [36 Valid, 162 Invalid, 3 Unknown, 0 Unchecked, 6989.40ms Time] [2021-11-05 12:24:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-05 12:24:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-05 12:24:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 1.0495495495495495) internal successors, (233), 224 states have internal predecessors, (233), 0 states have call successors, (0), 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 12:24:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 233 transitions. [2021-11-05 12:24:42,606 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 233 transitions. Word has length 109 [2021-11-05 12:24:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:42,606 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 233 transitions. [2021-11-05 12:24:42,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 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 12:24:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 233 transitions. [2021-11-05 12:24:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 12:24:42,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:42,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:42,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-05 12:24:42,608 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:24:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2032233231, now seen corresponding path program 1 times [2021-11-05 12:24:42,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:42,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60253784] [2021-11-05 12:24:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:42,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:45,235 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 12:24:45,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:45,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60253784] [2021-11-05 12:24:45,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60253784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:45,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:45,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:24:45,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147163168] [2021-11-05 12:24:45,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:45,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:24:45,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:24:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:24:45,236 INFO L87 Difference]: Start difference. First operand 225 states and 233 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:24:47,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:49,400 WARN L515 Checker$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 12:24:51,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:24:53,556 WARN L515 Checker$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 12:24:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:24:54,723 INFO L93 Difference]: Finished difference Result 225 states and 233 transitions. [2021-11-05 12:24:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:24:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-05 12:24:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:24:54,724 INFO L225 Difference]: With dead ends: 225 [2021-11-05 12:24:54,724 INFO L226 Difference]: Without dead ends: 223 [2021-11-05 12:24:54,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1925.05ms TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:24:54,725 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 349 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8428.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8798.19ms IncrementalHoareTripleChecker+Time [2021-11-05 12:24:54,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 322 Invalid, 123 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [15 Valid, 104 Invalid, 4 Unknown, 0 Unchecked, 8798.19ms Time] [2021-11-05 12:24:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-05 12:24:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-11-05 12:24:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 1.0452488687782806) internal successors, (231), 222 states have internal predecessors, (231), 0 states have call successors, (0), 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 12:24:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 231 transitions. [2021-11-05 12:24:54,739 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 231 transitions. Word has length 111 [2021-11-05 12:24:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:24:54,739 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 231 transitions. [2021-11-05 12:24:54,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:24:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 231 transitions. [2021-11-05 12:24:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 12:24:54,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:24:54,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:54,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-05 12:24:54,740 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:24:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:24:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1411766555, now seen corresponding path program 1 times [2021-11-05 12:24:54,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:24:54,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237987304] [2021-11-05 12:24:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:24:54,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:24:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:24:59,620 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 12:24:59,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:24:59,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237987304] [2021-11-05 12:24:59,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237987304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:24:59,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:24:59,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:24:59,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085585242] [2021-11-05 12:24:59,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:24:59,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:24:59,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:24:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:24:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:24:59,621 INFO L87 Difference]: Start difference. First operand 223 states and 231 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:25:01,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:03,786 WARN L515 Checker$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 12:25:05,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:07,912 WARN L515 Checker$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 12:25:10,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:12,135 WARN L515 Checker$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 12:25:14,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:16,324 WARN L515 Checker$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 12:25:18,447 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 12:25:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:25:20,598 INFO L93 Difference]: Finished difference Result 236 states and 243 transitions. [2021-11-05 12:25:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:25:20,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-05 12:25:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:25:20,599 INFO L225 Difference]: With dead ends: 236 [2021-11-05 12:25:20,599 INFO L226 Difference]: Without dead ends: 207 [2021-11-05 12:25:20,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2152.49ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:25:20,600 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 550 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 19 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18813.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19723.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:25:20,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 430 Invalid, 274 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [19 Valid, 246 Invalid, 9 Unknown, 0 Unchecked, 19723.07ms Time] [2021-11-05 12:25:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-05 12:25:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-05 12:25:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0242718446601942) internal successors, (211), 206 states have internal predecessors, (211), 0 states have call successors, (0), 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 12:25:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 211 transitions. [2021-11-05 12:25:20,614 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 211 transitions. Word has length 111 [2021-11-05 12:25:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:25:20,614 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 211 transitions. [2021-11-05 12:25:20,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:25:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 211 transitions. [2021-11-05 12:25:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-05 12:25:20,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:25:20,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:20,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-05 12:25:20,615 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 12:25:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:25:20,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1834007801, now seen corresponding path program 1 times [2021-11-05 12:25:20,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:25:20,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831398871] [2021-11-05 12:25:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:25:20,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:25:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:25:26,256 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 12:25:26,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:25:26,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831398871] [2021-11-05 12:25:26,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831398871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:25:26,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:25:26,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:25:26,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901402376] [2021-11-05 12:25:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:25:26,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:25:26,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:25:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:25:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:25:26,257 INFO L87 Difference]: Start difference. First operand 207 states and 211 transitions. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:28,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:25:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:25:29,061 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2021-11-05 12:25:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:25:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-05 12:25:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:25:29,062 INFO L225 Difference]: With dead ends: 207 [2021-11-05 12:25:29,062 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 12:25:29,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1086.38ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:25:29,062 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 317 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2304.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2442.46ms IncrementalHoareTripleChecker+Time [2021-11-05 12:25:29,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 481 Invalid, 110 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 2442.46ms Time] [2021-11-05 12:25:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 12:25:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 12:25:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 12:25:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 12:25:29,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2021-11-05 12:25:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:25:29,063 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 12:25:29,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:25:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 12:25:29,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 12:25:29,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 10 remaining) [2021-11-05 12:25:29,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2021-11-05 12:25:29,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2021-11-05 12:25:29,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-05 12:25:29,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-05 12:26:31,368 WARN L230 SmtUtils]: Spent 57.35s on a formula simplification. DAG size of input: 434 DAG size of output: 424 [2021-11-05 12:27:27,912 WARN L230 SmtUtils]: Spent 56.30s on a formula simplification. DAG size of input: 435 DAG size of output: 425 [2021-11-05 12:29:14,087 WARN L230 SmtUtils]: Spent 1.76m on a formula simplification. DAG size of input: 500 DAG size of output: 493 Killed by 15