./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:29:06,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:29:06,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:29:06,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:29:06,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:29:06,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:29:06,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:29:06,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:29:06,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:29:06,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:29:06,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:29:06,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:29:06,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:29:06,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:29:06,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:29:06,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:29:06,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:29:06,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:29:06,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:29:06,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:29:06,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:29:06,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:29:06,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:29:06,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:29:06,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:29:06,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:29:06,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:29:06,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:29:06,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:29:06,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:29:06,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:29:06,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:29:06,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:29:06,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:29:06,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:29:06,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:29:06,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:29:06,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:29:06,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:29:06,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:29:06,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:29:06,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:29:06,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:29:06,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:29:06,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:29:06,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:29:06,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:29:06,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:29:06,476 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:29:06,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:29:06,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:29:06,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:29:06,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:29:06,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:29:06,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:29:06,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:29:06,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:29:06,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:29:06,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:29:06,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:29:06,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:29:06,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:29:06,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:29:06,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:29:06,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:29:06,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:29:06,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:29:06,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:29:06,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:29:06,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:29:06,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:29:06,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-02 12:29:06,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:29:06,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:29:06,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:29:06,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:29:06,810 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:29:06,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-02 12:29:06,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f758039/f2725bdb0b7142da9372ab6a605b908d/FLAG688cfbfa6 [2021-11-02 12:29:07,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:29:07,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-02 12:29:07,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f758039/f2725bdb0b7142da9372ab6a605b908d/FLAG688cfbfa6 [2021-11-02 12:29:07,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f758039/f2725bdb0b7142da9372ab6a605b908d [2021-11-02 12:29:07,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:29:07,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:29:07,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:29:07,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:29:07,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:29:07,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:07" (1/1) ... [2021-11-02 12:29:07,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ec3dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:07, skipping insertion in model container [2021-11-02 12:29:07,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:07" (1/1) ... [2021-11-02 12:29:07,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:29:07,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:29:08,287 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_append_harness.i[4493,4506] [2021-11-02 12:29:08,297 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_append_harness.i[4553,4566] [2021-11-02 12:29:08,331 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:29:08,338 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:29:09,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,355 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,691 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:29:09,692 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:29:09,694 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:29:09,696 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:29:09,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:29:09,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:29:09,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:29:09,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:29:09,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:29:09,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:29:09,857 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:29:09,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:09,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:29:10,120 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:29:10,145 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_append_harness.i[4493,4506] [2021-11-02 12:29:10,147 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_append_harness.i[4553,4566] [2021-11-02 12:29:10,149 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:29:10,150 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:29:10,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:29:10,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:29:10,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:29:10,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:29:10,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:29:10,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:29:10,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:29:10,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:29:10,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:29:10,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:29:10,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:29:10,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:29:10,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:29:10,602 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:29:10,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10 WrapperNode [2021-11-02 12:29:10,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:29:10,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:29:10,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:29:10,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:29:10,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:29:10,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:29:10,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:29:10,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:29:10,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:29:10,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:29:10,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:29:10,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:29:10,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (1/1) ... [2021-11-02 12:29:10,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:29:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:29:10,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 12:29:10,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 12:29:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:29:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:29:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:29:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:29:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:29:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:29:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:29:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:29:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:29:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:29:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:29:16,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:29:16,678 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-11-02 12:29:16,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:16 BoogieIcfgContainer [2021-11-02 12:29:16,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:29:16,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:29:16,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:29:16,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:29:16,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:29:07" (1/3) ... [2021-11-02 12:29:16,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6530bd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:16, skipping insertion in model container [2021-11-02 12:29:16,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:10" (2/3) ... [2021-11-02 12:29:16,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6530bd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:16, skipping insertion in model container [2021-11-02 12:29:16,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:16" (3/3) ... [2021-11-02 12:29:16,688 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-02 12:29:16,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:29:16,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-02 12:29:16,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:29:16,744 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 12:29:16,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-02 12:29:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 12:29:16,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:16,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:29:16,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1026196011, now seen corresponding path program 1 times [2021-11-02 12:29:16,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:16,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573363586] [2021-11-02 12:29:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:16,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:17,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:17,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573363586] [2021-11-02 12:29:17,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573363586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:17,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:17,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:29:17,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151663104] [2021-11-02 12:29:17,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:29:17,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:29:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:29:17,533 INFO L87 Difference]: Start difference. First operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 0 states have call successors, (0), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:19,646 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 [] [2021-11-02 12:29:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:21,514 INFO L93 Difference]: Finished difference Result 516 states and 711 transitions. [2021-11-02 12:29:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:29:21,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-02 12:29:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:21,530 INFO L225 Difference]: With dead ends: 516 [2021-11-02 12:29:21,530 INFO L226 Difference]: Without dead ends: 255 [2021-11-02 12:29:21,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:29:21,536 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3476.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3861.26ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:21,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 327 Unknown, 0 Unchecked, 6.73ms Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 3861.26ms Time] [2021-11-02 12:29:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-02 12:29:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-02 12:29:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3529411764705883) internal successors, (322), 254 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2021-11-02 12:29:21,580 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 43 [2021-11-02 12:29:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:21,581 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2021-11-02 12:29:21,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2021-11-02 12:29:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 12:29:21,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:21,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:29:21,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:29:21,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1821286743, now seen corresponding path program 1 times [2021-11-02 12:29:21,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:21,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388987377] [2021-11-02 12:29:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:21,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:21,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:21,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388987377] [2021-11-02 12:29:21,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388987377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:21,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:21,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:29:21,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437836242] [2021-11-02 12:29:21,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:29:21,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:29:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:21,959 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:24,077 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 [] [2021-11-02 12:29:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:26,761 INFO L93 Difference]: Finished difference Result 484 states and 610 transitions. [2021-11-02 12:29:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:29:26,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-02 12:29:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:26,763 INFO L225 Difference]: With dead ends: 484 [2021-11-02 12:29:26,763 INFO L226 Difference]: Without dead ends: 255 [2021-11-02 12:29:26,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.67ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:26,765 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4213.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.77ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4720.82ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:26,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 550 Unknown, 0 Unchecked, 17.77ms Time], IncrementalHoareTripleChecker [6 Valid, 543 Invalid, 1 Unknown, 0 Unchecked, 4720.82ms Time] [2021-11-02 12:29:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-02 12:29:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-02 12:29:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3403361344537814) internal successors, (319), 254 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 319 transitions. [2021-11-02 12:29:26,778 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 319 transitions. Word has length 43 [2021-11-02 12:29:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:26,779 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 319 transitions. [2021-11-02 12:29:26,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 319 transitions. [2021-11-02 12:29:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 12:29:26,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:26,781 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] [2021-11-02 12:29:26,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:29:26,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:26,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash 704440679, now seen corresponding path program 1 times [2021-11-02 12:29:26,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:26,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864426813] [2021-11-02 12:29:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:26,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:27,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:27,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864426813] [2021-11-02 12:29:27,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864426813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:27,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:27,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:29:27,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296528646] [2021-11-02 12:29:27,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:29:27,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:29:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:27,069 INFO L87 Difference]: Start difference. First operand 255 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:29,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:29:32,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:32,808 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2021-11-02 12:29:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:29:32,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-02 12:29:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:32,810 INFO L225 Difference]: With dead ends: 535 [2021-11-02 12:29:32,810 INFO L226 Difference]: Without dead ends: 305 [2021-11-02 12:29:32,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:29:32,812 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 109 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5237.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.73ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5626.99ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:32,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 0 Invalid, 995 Unknown, 0 Unchecked, 14.73ms Time], IncrementalHoareTripleChecker [17 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 5626.99ms Time] [2021-11-02 12:29:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-02 12:29:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 265. [2021-11-02 12:29:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 264 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2021-11-02 12:29:32,825 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 55 [2021-11-02 12:29:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:32,825 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2021-11-02 12:29:32,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2021-11-02 12:29:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 12:29:32,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:32,828 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] [2021-11-02 12:29:32,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:29:32,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2076247977, now seen corresponding path program 1 times [2021-11-02 12:29:32,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:32,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593225509] [2021-11-02 12:29:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:32,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:33,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:33,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593225509] [2021-11-02 12:29:33,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593225509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:33,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:33,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:29:33,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738621117] [2021-11-02 12:29:33,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:29:33,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:29:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:33,176 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:35,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:29:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:37,454 INFO L93 Difference]: Finished difference Result 479 states and 594 transitions. [2021-11-02 12:29:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:29:37,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-02 12:29:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:37,456 INFO L225 Difference]: With dead ends: 479 [2021-11-02 12:29:37,456 INFO L226 Difference]: Without dead ends: 265 [2021-11-02 12:29:37,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.08ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:37,458 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3992.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4218.30ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:37,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [5 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 4218.30ms Time] [2021-11-02 12:29:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-02 12:29:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-02 12:29:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3185483870967742) internal successors, (327), 264 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2021-11-02 12:29:37,468 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 55 [2021-11-02 12:29:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:37,469 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2021-11-02 12:29:37,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2021-11-02 12:29:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 12:29:37,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:37,471 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] [2021-11-02 12:29:37,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:29:37,471 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash 496870244, now seen corresponding path program 1 times [2021-11-02 12:29:37,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:37,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977879926] [2021-11-02 12:29:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:37,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:37,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:37,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977879926] [2021-11-02 12:29:37,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977879926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:37,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:37,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:29:37,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407231775] [2021-11-02 12:29:37,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:29:37,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:37,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:29:37,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:29:37,948 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-11-02 12:29:40,015 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 [] [2021-11-02 12:29:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:43,061 INFO L93 Difference]: Finished difference Result 447 states and 548 transitions. [2021-11-02 12:29:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:29:43,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 [2021-11-02 12:29:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:43,064 INFO L225 Difference]: With dead ends: 447 [2021-11-02 12:29:43,064 INFO L226 Difference]: Without dead ends: 265 [2021-11-02 12:29:43,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 336.51ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:29:43,065 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 846 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4590.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4869.46ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:43,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 0 Invalid, 738 Unknown, 0 Unchecked, 13.91ms Time], IncrementalHoareTripleChecker [8 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 4869.46ms Time] [2021-11-02 12:29:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-02 12:29:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-02 12:29:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3064516129032258) internal successors, (324), 264 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2021-11-02 12:29:43,073 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 57 [2021-11-02 12:29:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:43,074 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2021-11-02 12:29:43,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-11-02 12:29:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2021-11-02 12:29:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 12:29:43,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:43,076 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] [2021-11-02 12:29:43,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:29:43,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2087499103, now seen corresponding path program 1 times [2021-11-02 12:29:43,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:43,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377019532] [2021-11-02 12:29:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:43,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:43,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:43,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377019532] [2021-11-02 12:29:43,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377019532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:43,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:43,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:29:43,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123428974] [2021-11-02 12:29:43,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:29:43,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:29:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:29:43,865 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:45,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:29:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:52,713 INFO L93 Difference]: Finished difference Result 629 states and 758 transitions. [2021-11-02 12:29:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 12:29:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-02 12:29:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:52,716 INFO L225 Difference]: With dead ends: 629 [2021-11-02 12:29:52,716 INFO L226 Difference]: Without dead ends: 491 [2021-11-02 12:29:52,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 491.20ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:29:52,724 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 946 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7928.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.87ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8475.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:52,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 0 Invalid, 1812 Unknown, 0 Unchecked, 26.87ms Time], IncrementalHoareTripleChecker [18 Valid, 1793 Invalid, 1 Unknown, 0 Unchecked, 8475.91ms Time] [2021-11-02 12:29:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-02 12:29:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 304. [2021-11-02 12:29:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 287 states have (on average 1.3031358885017421) internal successors, (374), 303 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2021-11-02 12:29:52,734 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 59 [2021-11-02 12:29:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:52,735 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2021-11-02 12:29:52,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2021-11-02 12:29:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 12:29:52,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:52,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:29:52,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:29:52,744 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1360503117, now seen corresponding path program 1 times [2021-11-02 12:29:52,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:52,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861188579] [2021-11-02 12:29:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:52,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:53,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:53,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861188579] [2021-11-02 12:29:53,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861188579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:53,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:53,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:29:53,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520676586] [2021-11-02 12:29:53,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:29:53,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:29:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:29:53,238 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:55,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:29:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:57,912 INFO L93 Difference]: Finished difference Result 430 states and 520 transitions. [2021-11-02 12:29:57,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:29:57,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 12:29:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:57,914 INFO L225 Difference]: With dead ends: 430 [2021-11-02 12:29:57,914 INFO L226 Difference]: Without dead ends: 304 [2021-11-02 12:29:57,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 297.31ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:29:57,916 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 929 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4151.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4470.76ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:57,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 0 Invalid, 598 Unknown, 0 Unchecked, 12.43ms Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 1 Unknown, 0 Unchecked, 4470.76ms Time] [2021-11-02 12:29:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-02 12:29:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-02 12:29:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 287 states have (on average 1.2961672473867596) internal successors, (372), 303 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2021-11-02 12:29:57,927 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 372 transitions. Word has length 61 [2021-11-02 12:29:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:57,928 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 372 transitions. [2021-11-02 12:29:57,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 372 transitions. [2021-11-02 12:29:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 12:29:57,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:57,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:29:57,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:29:57,930 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:29:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -165160809, now seen corresponding path program 1 times [2021-11-02 12:29:57,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:57,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294803065] [2021-11-02 12:29:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:57,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:58,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:58,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294803065] [2021-11-02 12:29:58,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294803065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:58,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:58,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:29:58,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927564936] [2021-11-02 12:29:58,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:29:58,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:58,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:29:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:29:58,695 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:00,770 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 [] [2021-11-02 12:30:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:11,532 INFO L93 Difference]: Finished difference Result 797 states and 952 transitions. [2021-11-02 12:30:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:30:11,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 12:30:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:11,536 INFO L225 Difference]: With dead ends: 797 [2021-11-02 12:30:11,536 INFO L226 Difference]: Without dead ends: 614 [2021-11-02 12:30:11,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1025.09ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:30:11,537 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1024 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11349.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.98ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12037.41ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:11,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 0 Invalid, 3028 Unknown, 0 Unchecked, 24.98ms Time], IncrementalHoareTripleChecker [36 Valid, 2991 Invalid, 1 Unknown, 0 Unchecked, 12037.41ms Time] [2021-11-02 12:30:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-02 12:30:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 433. [2021-11-02 12:30:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 416 states have (on average 1.3052884615384615) internal successors, (543), 432 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 543 transitions. [2021-11-02 12:30:11,553 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 543 transitions. Word has length 63 [2021-11-02 12:30:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:11,554 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 543 transitions. [2021-11-02 12:30:11,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 543 transitions. [2021-11-02 12:30:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:30:11,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:11,555 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] [2021-11-02 12:30:11,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:30:11,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:30:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1088523855, now seen corresponding path program 1 times [2021-11-02 12:30:11,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:11,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890243792] [2021-11-02 12:30:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:11,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:30:12,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:12,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890243792] [2021-11-02 12:30:12,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890243792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:12,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:12,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:30:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416638580] [2021-11-02 12:30:12,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:30:12,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:30:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:30:12,419 INFO L87 Difference]: Start difference. First operand 433 states and 543 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2021-11-02 12:30:14,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:30:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:22,036 INFO L93 Difference]: Finished difference Result 932 states and 1153 transitions. [2021-11-02 12:30:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:30:22,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 [2021-11-02 12:30:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:22,042 INFO L225 Difference]: With dead ends: 932 [2021-11-02 12:30:22,042 INFO L226 Difference]: Without dead ends: 574 [2021-11-02 12:30:22,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 290.12ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:30:22,046 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8895.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.14ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9412.32ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:22,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 2344 Unknown, 0 Unchecked, 12.14ms Time], IncrementalHoareTripleChecker [28 Valid, 2315 Invalid, 1 Unknown, 0 Unchecked, 9412.32ms Time] [2021-11-02 12:30:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-02 12:30:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 433. [2021-11-02 12:30:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 416 states have (on average 1.2980769230769231) internal successors, (540), 432 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 540 transitions. [2021-11-02 12:30:22,060 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 540 transitions. Word has length 67 [2021-11-02 12:30:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:22,060 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 540 transitions. [2021-11-02 12:30:22,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2021-11-02 12:30:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 540 transitions. [2021-11-02 12:30:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:30:22,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:22,061 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] [2021-11-02 12:30:22,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:30:22,062 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:30:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1148584190, now seen corresponding path program 1 times [2021-11-02 12:30:22,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:22,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626376696] [2021-11-02 12:30:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:22,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:30:22,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:22,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626376696] [2021-11-02 12:30:22,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626376696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:22,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:22,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:30:22,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555463100] [2021-11-02 12:30:22,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:30:22,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:22,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:30:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:30:22,655 INFO L87 Difference]: Start difference. First operand 433 states and 540 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2021-11-02 12:30:24,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:30:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:29,979 INFO L93 Difference]: Finished difference Result 713 states and 866 transitions. [2021-11-02 12:30:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:30:29,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 [2021-11-02 12:30:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:29,982 INFO L225 Difference]: With dead ends: 713 [2021-11-02 12:30:29,982 INFO L226 Difference]: Without dead ends: 707 [2021-11-02 12:30:29,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 199.69ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:30:29,989 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 319 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6735.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.58ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7175.01ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:29,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 0 Invalid, 1477 Unknown, 0 Unchecked, 9.58ms Time], IncrementalHoareTripleChecker [26 Valid, 1450 Invalid, 1 Unknown, 0 Unchecked, 7175.01ms Time] [2021-11-02 12:30:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-02 12:30:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 461. [2021-11-02 12:30:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 444 states have (on average 1.2792792792792793) internal successors, (568), 460 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 568 transitions. [2021-11-02 12:30:30,008 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 568 transitions. Word has length 67 [2021-11-02 12:30:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:30,012 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 568 transitions. [2021-11-02 12:30:30,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2021-11-02 12:30:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 568 transitions. [2021-11-02 12:30:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 12:30:30,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:30,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:30:30,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:30:30,014 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:30:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2057535045, now seen corresponding path program 1 times [2021-11-02 12:30:30,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:30,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558945157] [2021-11-02 12:30:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:30,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:30:30,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:30,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558945157] [2021-11-02 12:30:30,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558945157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:30,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:30,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:30:30,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386032485] [2021-11-02 12:30:30,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:30:30,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:30:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:30:30,361 INFO L87 Difference]: Start difference. First operand 461 states and 568 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:32,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:30:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:37,232 INFO L93 Difference]: Finished difference Result 996 states and 1211 transitions. [2021-11-02 12:30:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:30:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-02 12:30:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:37,235 INFO L225 Difference]: With dead ends: 996 [2021-11-02 12:30:37,235 INFO L226 Difference]: Without dead ends: 613 [2021-11-02 12:30:37,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 111.37ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:30:37,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 468 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6337.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6766.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:37,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 0 Invalid, 1246 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [26 Valid, 1219 Invalid, 1 Unknown, 0 Unchecked, 6766.91ms Time] [2021-11-02 12:30:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-02 12:30:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 461. [2021-11-02 12:30:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 444 states have (on average 1.2612612612612613) internal successors, (560), 460 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 560 transitions. [2021-11-02 12:30:37,253 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 560 transitions. Word has length 71 [2021-11-02 12:30:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:37,253 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 560 transitions. [2021-11-02 12:30:37,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 560 transitions. [2021-11-02 12:30:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 12:30:37,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:37,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:30:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:30:37,256 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:30:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1921333697, now seen corresponding path program 1 times [2021-11-02 12:30:37,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:37,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432602833] [2021-11-02 12:30:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:37,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:30:41,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:41,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432602833] [2021-11-02 12:30:41,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432602833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:41,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:41,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:30:41,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361945791] [2021-11-02 12:30:41,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:30:41,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:41,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:30:41,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:30:41,191 INFO L87 Difference]: Start difference. First operand 461 states and 560 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:43,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:30:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:49,161 INFO L93 Difference]: Finished difference Result 967 states and 1185 transitions. [2021-11-02 12:30:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:30:49,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-02 12:30:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:49,163 INFO L225 Difference]: With dead ends: 967 [2021-11-02 12:30:49,163 INFO L226 Difference]: Without dead ends: 533 [2021-11-02 12:30:49,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 777.85ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:30:49,165 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 721 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6949.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.84ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7395.66ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:49,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 0 Invalid, 1590 Unknown, 0 Unchecked, 14.84ms Time], IncrementalHoareTripleChecker [16 Valid, 1573 Invalid, 1 Unknown, 0 Unchecked, 7395.66ms Time] [2021-11-02 12:30:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-02 12:30:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 459. [2021-11-02 12:30:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 442 states have (on average 1.260180995475113) internal successors, (557), 458 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 557 transitions. [2021-11-02 12:30:49,180 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 557 transitions. Word has length 71 [2021-11-02 12:30:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:49,181 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 557 transitions. [2021-11-02 12:30:49,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 557 transitions. [2021-11-02 12:30:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:30:49,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:49,182 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] [2021-11-02 12:30:49,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:30:49,183 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:30:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:49,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1814979209, now seen corresponding path program 1 times [2021-11-02 12:30:49,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:49,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426815628] [2021-11-02 12:30:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:49,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:30:49,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:49,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426815628] [2021-11-02 12:30:49,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426815628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:49,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:49,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:30:49,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780524958] [2021-11-02 12:30:49,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:30:49,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:30:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:30:49,459 INFO L87 Difference]: Start difference. First operand 459 states and 557 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-02 12:30:51,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:30:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:55,530 INFO L93 Difference]: Finished difference Result 1373 states and 1669 transitions. [2021-11-02 12:30:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:30:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-11-02 12:30:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:55,534 INFO L225 Difference]: With dead ends: 1373 [2021-11-02 12:30:55,534 INFO L226 Difference]: Without dead ends: 934 [2021-11-02 12:30:55,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 143.96ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:30:55,535 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 659 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5521.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5920.39ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:55,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 0 Invalid, 984 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [27 Valid, 956 Invalid, 1 Unknown, 0 Unchecked, 5920.39ms Time] [2021-11-02 12:30:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-02 12:30:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 527. [2021-11-02 12:30:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 510 states have (on average 1.2627450980392156) internal successors, (644), 526 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 644 transitions. [2021-11-02 12:30:55,573 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 644 transitions. Word has length 75 [2021-11-02 12:30:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:55,574 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 644 transitions. [2021-11-02 12:30:55,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-02 12:30:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 644 transitions. [2021-11-02 12:30:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:30:55,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:55,575 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] [2021-11-02 12:30:55,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:30:55,576 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:30:55,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash -554061959, now seen corresponding path program 1 times [2021-11-02 12:30:55,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:55,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023186712] [2021-11-02 12:30:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:55,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:30:57,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:57,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023186712] [2021-11-02 12:30:57,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023186712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:57,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:57,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:30:57,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832287989] [2021-11-02 12:30:57,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:30:57,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:30:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:30:57,365 INFO L87 Difference]: Start difference. First operand 527 states and 644 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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) [2021-11-02 12:30:59,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:31:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:31:26,924 INFO L93 Difference]: Finished difference Result 2340 states and 2844 transitions. [2021-11-02 12:31:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 12:31:26,924 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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 [2021-11-02 12:31:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:31:26,931 INFO L225 Difference]: With dead ends: 2340 [2021-11-02 12:31:26,931 INFO L226 Difference]: Without dead ends: 1835 [2021-11-02 12:31:26,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 7746.17ms TimeCoverageRelationStatistics Valid=880, Invalid=3280, Unknown=0, NotChecked=0, Total=4160 [2021-11-02 12:31:26,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2884 mSDsluCounter, 3945 mSDsCounter, 0 mSdLazyCounter, 6427 mSolverCounterSat, 109 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21344.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.68ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 6427 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22510.00ms IncrementalHoareTripleChecker+Time [2021-11-02 12:31:26,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2884 Valid, 0 Invalid, 6537 Unknown, 0 Unchecked, 56.68ms Time], IncrementalHoareTripleChecker [109 Valid, 6427 Invalid, 1 Unknown, 0 Unchecked, 22510.00ms Time] [2021-11-02 12:31:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2021-11-02 12:31:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 814. [2021-11-02 12:31:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 797 states have (on average 1.2358845671267251) internal successors, (985), 813 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:31:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 985 transitions. [2021-11-02 12:31:26,970 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 985 transitions. Word has length 75 [2021-11-02 12:31:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:31:26,970 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 985 transitions. [2021-11-02 12:31:26,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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) [2021-11-02 12:31:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 985 transitions. [2021-11-02 12:31:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:31:26,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:31:26,972 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] [2021-11-02 12:31:26,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:31:26,973 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:31:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:31:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2138280884, now seen corresponding path program 1 times [2021-11-02 12:31:26,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:31:26,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639829304] [2021-11-02 12:31:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:31:26,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:31:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:31:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:31:28,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:31:28,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639829304] [2021-11-02 12:31:28,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639829304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:31:28,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:31:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:31:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005246867] [2021-11-02 12:31:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:31:28,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:31:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:31:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:31:28,708 INFO L87 Difference]: Start difference. First operand 814 states and 985 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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) [2021-11-02 12:31:30,819 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 [] [2021-11-02 12:32:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:01,788 INFO L93 Difference]: Finished difference Result 2144 states and 2567 transitions. [2021-11-02 12:32:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-02 12:32:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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 [2021-11-02 12:32:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:01,795 INFO L225 Difference]: With dead ends: 2144 [2021-11-02 12:32:01,795 INFO L226 Difference]: Without dead ends: 1953 [2021-11-02 12:32:01,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 7139.66ms TimeCoverageRelationStatistics Valid=724, Invalid=2246, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 12:32:01,798 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4211 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 7782 mSolverCounterSat, 117 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25262.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.71ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 7782 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26610.24ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:01,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4211 Valid, 0 Invalid, 7900 Unknown, 0 Unchecked, 73.71ms Time], IncrementalHoareTripleChecker [117 Valid, 7782 Invalid, 1 Unknown, 0 Unchecked, 26610.24ms Time] [2021-11-02 12:32:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-11-02 12:32:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 881. [2021-11-02 12:32:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 864 states have (on average 1.2337962962962963) internal successors, (1066), 880 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1066 transitions. [2021-11-02 12:32:01,837 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1066 transitions. Word has length 75 [2021-11-02 12:32:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:01,838 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1066 transitions. [2021-11-02 12:32:01,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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) [2021-11-02 12:32:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1066 transitions. [2021-11-02 12:32:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:32:01,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:01,840 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] [2021-11-02 12:32:01,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:32:01,841 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:32:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash -755885893, now seen corresponding path program 1 times [2021-11-02 12:32:01,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:01,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521672100] [2021-11-02 12:32:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:01,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:32:02,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:02,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521672100] [2021-11-02 12:32:02,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521672100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:02,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:02,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:32:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679023464] [2021-11-02 12:32:02,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:32:02,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:32:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:32:02,625 INFO L87 Difference]: Start difference. First operand 881 states and 1066 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2021-11-02 12:32:04,692 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 [] [2021-11-02 12:32:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:12,848 INFO L93 Difference]: Finished difference Result 2057 states and 2477 transitions. [2021-11-02 12:32:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:32:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 [2021-11-02 12:32:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:12,852 INFO L225 Difference]: With dead ends: 2057 [2021-11-02 12:32:12,853 INFO L226 Difference]: Without dead ends: 1187 [2021-11-02 12:32:12,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 301.73ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:32:12,855 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9451.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.22ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9980.07ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:12,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 2399 Unknown, 0 Unchecked, 15.22ms Time], IncrementalHoareTripleChecker [28 Valid, 2370 Invalid, 1 Unknown, 0 Unchecked, 9980.07ms Time] [2021-11-02 12:32:12,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-02 12:32:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 881. [2021-11-02 12:32:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 864 states have (on average 1.2256944444444444) internal successors, (1059), 880 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1059 transitions. [2021-11-02 12:32:12,890 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1059 transitions. Word has length 75 [2021-11-02 12:32:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:12,891 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1059 transitions. [2021-11-02 12:32:12,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2021-11-02 12:32:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1059 transitions. [2021-11-02 12:32:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 12:32:12,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:12,893 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] [2021-11-02 12:32:12,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:32:12,893 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:32:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash -797772042, now seen corresponding path program 1 times [2021-11-02 12:32:12,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:12,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990817110] [2021-11-02 12:32:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:12,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:32:13,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:13,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990817110] [2021-11-02 12:32:13,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990817110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:13,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:13,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:32:13,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259643244] [2021-11-02 12:32:13,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:32:13,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:32:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:32:13,146 INFO L87 Difference]: Start difference. First operand 881 states and 1059 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:15,223 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 [] [2021-11-02 12:32:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:18,150 INFO L93 Difference]: Finished difference Result 1431 states and 1707 transitions. [2021-11-02 12:32:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:32:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-02 12:32:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:18,152 INFO L225 Difference]: With dead ends: 1431 [2021-11-02 12:32:18,152 INFO L226 Difference]: Without dead ends: 554 [2021-11-02 12:32:18,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:32:18,154 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4680.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4928.06ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:18,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 926 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [15 Valid, 910 Invalid, 1 Unknown, 0 Unchecked, 4928.06ms Time] [2021-11-02 12:32:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-11-02 12:32:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 512. [2021-11-02 12:32:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 495 states have (on average 1.208080808080808) internal successors, (598), 511 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 598 transitions. [2021-11-02 12:32:18,170 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 598 transitions. Word has length 77 [2021-11-02 12:32:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:18,170 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 598 transitions. [2021-11-02 12:32:18,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 598 transitions. [2021-11-02 12:32:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 12:32:18,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:18,172 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] [2021-11-02 12:32:18,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:32:18,172 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:32:18,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash -733592464, now seen corresponding path program 1 times [2021-11-02 12:32:18,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:18,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906155641] [2021-11-02 12:32:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:18,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:32:21,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:21,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906155641] [2021-11-02 12:32:21,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906155641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:21,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:21,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 12:32:21,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776366946] [2021-11-02 12:32:21,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 12:32:21,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 12:32:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:32:21,924 INFO L87 Difference]: Start difference. First operand 512 states and 598 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:24,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:32:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:42,798 INFO L93 Difference]: Finished difference Result 1289 states and 1486 transitions. [2021-11-02 12:32:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 12:32:42,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-02 12:32:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:42,801 INFO L225 Difference]: With dead ends: 1289 [2021-11-02 12:32:42,801 INFO L226 Difference]: Without dead ends: 928 [2021-11-02 12:32:42,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 5952.05ms TimeCoverageRelationStatistics Valid=613, Invalid=1739, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 12:32:42,802 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2833 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4341 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15041.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2833 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.34ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15856.59ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:42,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2833 Valid, 0 Invalid, 4412 Unknown, 0 Unchecked, 35.34ms Time], IncrementalHoareTripleChecker [70 Valid, 4341 Invalid, 1 Unknown, 0 Unchecked, 15856.59ms Time] [2021-11-02 12:32:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-02 12:32:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 623. [2021-11-02 12:32:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 606 states have (on average 1.2145214521452146) internal successors, (736), 622 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 736 transitions. [2021-11-02 12:32:42,825 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 736 transitions. Word has length 77 [2021-11-02 12:32:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:42,825 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 736 transitions. [2021-11-02 12:32:42,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 736 transitions. [2021-11-02 12:32:42,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 12:32:42,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:42,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:32:42,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:32:42,827 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:32:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1958750379, now seen corresponding path program 1 times [2021-11-02 12:32:42,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:42,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272474905] [2021-11-02 12:32:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:42,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:32:45,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:45,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272474905] [2021-11-02 12:32:45,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272474905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:45,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:45,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:32:45,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881484955] [2021-11-02 12:32:45,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:32:45,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:32:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:32:45,583 INFO L87 Difference]: Start difference. First operand 623 states and 736 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:48,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:32:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:55,430 INFO L93 Difference]: Finished difference Result 885 states and 1019 transitions. [2021-11-02 12:32:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:32:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-02 12:32:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:55,433 INFO L225 Difference]: With dead ends: 885 [2021-11-02 12:32:55,433 INFO L226 Difference]: Without dead ends: 671 [2021-11-02 12:32:55,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1722.53ms TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:32:55,434 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1647 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8099.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.31ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8599.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:55,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 0 Invalid, 1714 Unknown, 0 Unchecked, 17.31ms Time], IncrementalHoareTripleChecker [33 Valid, 1680 Invalid, 1 Unknown, 0 Unchecked, 8599.35ms Time] [2021-11-02 12:32:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-02 12:32:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 554. [2021-11-02 12:32:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 537 states have (on average 1.2141527001862198) internal successors, (652), 553 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 652 transitions. [2021-11-02 12:32:55,453 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 652 transitions. Word has length 77 [2021-11-02 12:32:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:55,453 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 652 transitions. [2021-11-02 12:32:55,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 652 transitions. [2021-11-02 12:32:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:32:55,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:55,455 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] [2021-11-02 12:32:55,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:32:55,455 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:32:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash 67303681, now seen corresponding path program 1 times [2021-11-02 12:32:55,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:55,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550992473] [2021-11-02 12:32:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:55,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:32:57,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:57,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550992473] [2021-11-02 12:32:57,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550992473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:57,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:57,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:32:57,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074529009] [2021-11-02 12:32:57,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:32:57,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:32:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:32:57,717 INFO L87 Difference]: Start difference. First operand 554 states and 652 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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) [2021-11-02 12:32:59,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:33:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:33:05,743 INFO L93 Difference]: Finished difference Result 1143 states and 1334 transitions. [2021-11-02 12:33:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:33:05,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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 [2021-11-02 12:33:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:33:05,745 INFO L225 Difference]: With dead ends: 1143 [2021-11-02 12:33:05,745 INFO L226 Difference]: Without dead ends: 774 [2021-11-02 12:33:05,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 619.57ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:33:05,746 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1258 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7149.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.81ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7631.93ms IncrementalHoareTripleChecker+Time [2021-11-02 12:33:05,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 0 Invalid, 1751 Unknown, 0 Unchecked, 15.81ms Time], IncrementalHoareTripleChecker [8 Valid, 1742 Invalid, 1 Unknown, 0 Unchecked, 7631.93ms Time] [2021-11-02 12:33:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-02 12:33:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 723. [2021-11-02 12:33:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 706 states have (on average 1.2167138810198301) internal successors, (859), 722 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:33:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 859 transitions. [2021-11-02 12:33:05,771 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 859 transitions. Word has length 83 [2021-11-02 12:33:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:33:05,772 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 859 transitions. [2021-11-02 12:33:05,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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) [2021-11-02 12:33:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 859 transitions. [2021-11-02 12:33:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:33:05,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:33:05,773 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] [2021-11-02 12:33:05,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:33:05,774 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:33:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:33:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash 717794620, now seen corresponding path program 1 times [2021-11-02 12:33:05,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:33:05,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431512577] [2021-11-02 12:33:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:33:05,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:33:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:33:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:33:08,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:33:08,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431512577] [2021-11-02 12:33:08,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431512577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:33:08,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:33:08,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:33:08,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600169338] [2021-11-02 12:33:08,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:33:08,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:33:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:33:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:33:08,396 INFO L87 Difference]: Start difference. First operand 723 states and 859 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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) [2021-11-02 12:33:10,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:33:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:33:18,521 INFO L93 Difference]: Finished difference Result 1219 states and 1435 transitions. [2021-11-02 12:33:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:33:18,521 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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 [2021-11-02 12:33:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:33:18,523 INFO L225 Difference]: With dead ends: 1219 [2021-11-02 12:33:18,523 INFO L226 Difference]: Without dead ends: 796 [2021-11-02 12:33:18,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2233.85ms TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:33:18,524 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1604 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7764.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.97ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8389.17ms IncrementalHoareTripleChecker+Time [2021-11-02 12:33:18,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 0 Invalid, 1979 Unknown, 0 Unchecked, 16.97ms Time], IncrementalHoareTripleChecker [44 Valid, 1934 Invalid, 1 Unknown, 0 Unchecked, 8389.17ms Time] [2021-11-02 12:33:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-02 12:33:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 646. [2021-11-02 12:33:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 629 states have (on average 1.2098569157392687) internal successors, (761), 645 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:33:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 761 transitions. [2021-11-02 12:33:18,545 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 761 transitions. Word has length 83 [2021-11-02 12:33:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:33:18,546 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 761 transitions. [2021-11-02 12:33:18,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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) [2021-11-02 12:33:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 761 transitions. [2021-11-02 12:33:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:33:18,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:33:18,547 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] [2021-11-02 12:33:18,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:33:18,548 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:33:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:33:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash -715215562, now seen corresponding path program 1 times [2021-11-02 12:33:18,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:33:18,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39541666] [2021-11-02 12:33:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:33:18,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:33:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:33:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:33:19,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:33:19,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39541666] [2021-11-02 12:33:19,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39541666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:33:19,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:33:19,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:33:19,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772545368] [2021-11-02 12:33:19,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:33:19,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:33:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:33:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:33:19,113 INFO L87 Difference]: Start difference. First operand 646 states and 761 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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) [2021-11-02 12:33:22,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:33:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:33:30,907 INFO L93 Difference]: Finished difference Result 1685 states and 1989 transitions. [2021-11-02 12:33:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:33:30,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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 [2021-11-02 12:33:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:33:30,911 INFO L225 Difference]: With dead ends: 1685 [2021-11-02 12:33:30,911 INFO L226 Difference]: Without dead ends: 1400 [2021-11-02 12:33:30,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1001.65ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:33:30,912 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 815 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10129.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.95ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10890.24ms IncrementalHoareTripleChecker+Time [2021-11-02 12:33:30,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 0 Invalid, 2502 Unknown, 0 Unchecked, 17.95ms Time], IncrementalHoareTripleChecker [47 Valid, 2454 Invalid, 1 Unknown, 0 Unchecked, 10890.24ms Time] [2021-11-02 12:33:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-02 12:33:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 769. [2021-11-02 12:33:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 752 states have (on average 1.1954787234042554) internal successors, (899), 768 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:33:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 899 transitions. [2021-11-02 12:33:30,941 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 899 transitions. Word has length 83 [2021-11-02 12:33:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:33:30,942 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 899 transitions. [2021-11-02 12:33:30,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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) [2021-11-02 12:33:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 899 transitions. [2021-11-02 12:33:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:33:30,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:33:30,943 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] [2021-11-02 12:33:30,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:33:30,944 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:33:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:33:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash -35157192, now seen corresponding path program 1 times [2021-11-02 12:33:30,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:33:30,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707208215] [2021-11-02 12:33:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:33:30,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:33:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:33:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:33:34,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:33:34,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707208215] [2021-11-02 12:33:34,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707208215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:33:34,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:33:34,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:33:34,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126855178] [2021-11-02 12:33:34,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:33:34,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:33:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:33:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:33:34,677 INFO L87 Difference]: Start difference. First operand 769 states and 899 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 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) [2021-11-02 12:33:37,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:33:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:33:46,914 INFO L93 Difference]: Finished difference Result 1209 states and 1400 transitions. [2021-11-02 12:33:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:33:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 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 [2021-11-02 12:33:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:33:46,917 INFO L225 Difference]: With dead ends: 1209 [2021-11-02 12:33:46,917 INFO L226 Difference]: Without dead ends: 902 [2021-11-02 12:33:46,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2660.21ms TimeCoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2021-11-02 12:33:46,918 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1848 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9479.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.05ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10229.40ms IncrementalHoareTripleChecker+Time [2021-11-02 12:33:46,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 0 Invalid, 2038 Unknown, 0 Unchecked, 21.05ms Time], IncrementalHoareTripleChecker [99 Valid, 1938 Invalid, 1 Unknown, 0 Unchecked, 10229.40ms Time] [2021-11-02 12:33:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-02 12:33:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 756. [2021-11-02 12:33:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 739 states have (on average 1.1786197564276049) internal successors, (871), 755 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:33:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 871 transitions. [2021-11-02 12:33:46,950 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 871 transitions. Word has length 83 [2021-11-02 12:33:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:33:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 871 transitions. [2021-11-02 12:33:46,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 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) [2021-11-02 12:33:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 871 transitions. [2021-11-02 12:33:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:33:46,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:33:46,952 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] [2021-11-02 12:33:46,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:33:46,953 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:33:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:33:46,953 INFO L85 PathProgramCache]: Analyzing trace with hash -13615688, now seen corresponding path program 1 times [2021-11-02 12:33:46,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:33:46,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438042144] [2021-11-02 12:33:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:33:46,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:33:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:33:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:33:48,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:33:48,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438042144] [2021-11-02 12:33:48,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438042144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:33:48,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:33:48,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:33:48,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111641126] [2021-11-02 12:33:48,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:33:48,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:33:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:33:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:33:48,351 INFO L87 Difference]: Start difference. First operand 756 states and 871 transitions. Second operand has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 15 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) [2021-11-02 12:33:50,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:34:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:07,252 INFO L93 Difference]: Finished difference Result 2172 states and 2485 transitions. [2021-11-02 12:34:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 12:34:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 15 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 [2021-11-02 12:34:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:07,257 INFO L225 Difference]: With dead ends: 2172 [2021-11-02 12:34:07,257 INFO L226 Difference]: Without dead ends: 1868 [2021-11-02 12:34:07,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 3431.11ms TimeCoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 12:34:07,259 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2075 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15127.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.44ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16032.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:07,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 0 Invalid, 4482 Unknown, 0 Unchecked, 37.44ms Time], IncrementalHoareTripleChecker [58 Valid, 4423 Invalid, 1 Unknown, 0 Unchecked, 16032.91ms Time] [2021-11-02 12:34:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-11-02 12:34:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1016. [2021-11-02 12:34:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 999 states have (on average 1.1891891891891893) internal successors, (1188), 1015 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1188 transitions. [2021-11-02 12:34:07,300 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1188 transitions. Word has length 83 [2021-11-02 12:34:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:07,301 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1188 transitions. [2021-11-02 12:34:07,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 15 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) [2021-11-02 12:34:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1188 transitions. [2021-11-02 12:34:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:34:07,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:07,303 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] [2021-11-02 12:34:07,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:34:07,303 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:34:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash 665656566, now seen corresponding path program 1 times [2021-11-02 12:34:07,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:07,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374616042] [2021-11-02 12:34:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:07,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:34:12,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:12,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374616042] [2021-11-02 12:34:12,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374616042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:12,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:12,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 12:34:12,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518684841] [2021-11-02 12:34:12,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:34:12,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:34:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:34:12,799 INFO L87 Difference]: Start difference. First operand 1016 states and 1188 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 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) [2021-11-02 12:34:14,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:34:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:40,745 INFO L93 Difference]: Finished difference Result 1461 states and 1677 transitions. [2021-11-02 12:34:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-02 12:34:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 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 [2021-11-02 12:34:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:40,749 INFO L225 Difference]: With dead ends: 1461 [2021-11-02 12:34:40,750 INFO L226 Difference]: Without dead ends: 1248 [2021-11-02 12:34:40,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 12748.72ms TimeCoverageRelationStatistics Valid=1330, Invalid=3362, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 12:34:40,752 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3120 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 4410 mSolverCounterSat, 191 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15450.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.60ms SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 4410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16439.14ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:40,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3120 Valid, 0 Invalid, 4602 Unknown, 0 Unchecked, 43.60ms Time], IncrementalHoareTripleChecker [191 Valid, 4410 Invalid, 1 Unknown, 0 Unchecked, 16439.14ms Time] [2021-11-02 12:34:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-02 12:34:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1051. [2021-11-02 12:34:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 1.1827852998065764) internal successors, (1223), 1050 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1223 transitions. [2021-11-02 12:34:40,793 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1223 transitions. Word has length 83 [2021-11-02 12:34:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:40,793 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1223 transitions. [2021-11-02 12:34:40,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 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) [2021-11-02 12:34:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1223 transitions. [2021-11-02 12:34:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:34:40,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:40,795 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] [2021-11-02 12:34:40,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:34:40,795 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:34:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash 989706481, now seen corresponding path program 1 times [2021-11-02 12:34:40,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:40,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878181425] [2021-11-02 12:34:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:40,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:34:41,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:41,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878181425] [2021-11-02 12:34:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878181425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:41,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:41,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:34:41,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948518104] [2021-11-02 12:34:41,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:34:41,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:41,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:34:41,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:34:41,381 INFO L87 Difference]: Start difference. First operand 1051 states and 1223 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2021-11-02 12:34:43,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:34:50,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:50,231 INFO L93 Difference]: Finished difference Result 1583 states and 1870 transitions. [2021-11-02 12:34:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:34:50,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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 [2021-11-02 12:34:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:50,235 INFO L225 Difference]: With dead ends: 1583 [2021-11-02 12:34:50,235 INFO L226 Difference]: Without dead ends: 1577 [2021-11-02 12:34:50,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 445.95ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:34:50,236 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7944.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.24ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8519.54ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:50,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 2004 Unknown, 0 Unchecked, 13.24ms Time], IncrementalHoareTripleChecker [67 Valid, 1936 Invalid, 1 Unknown, 0 Unchecked, 8519.54ms Time] [2021-11-02 12:34:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-11-02 12:34:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1145. [2021-11-02 12:34:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1128 states have (on average 1.1675531914893618) internal successors, (1317), 1144 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1317 transitions. [2021-11-02 12:34:50,274 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1317 transitions. Word has length 85 [2021-11-02 12:34:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:50,274 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 1317 transitions. [2021-11-02 12:34:50,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2021-11-02 12:34:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1317 transitions. [2021-11-02 12:34:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:34:50,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:50,275 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] [2021-11-02 12:34:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:34:50,276 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:34:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash 180359855, now seen corresponding path program 1 times [2021-11-02 12:34:50,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:50,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590710830] [2021-11-02 12:34:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:50,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:34:50,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:50,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590710830] [2021-11-02 12:34:50,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590710830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:50,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:50,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:34:50,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353907606] [2021-11-02 12:34:50,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:34:50,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:34:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:34:50,692 INFO L87 Difference]: Start difference. First operand 1145 states and 1317 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2021-11-02 12:34:53,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:34:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:59,042 INFO L93 Difference]: Finished difference Result 1764 states and 2042 transitions. [2021-11-02 12:34:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:34:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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 [2021-11-02 12:34:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:59,046 INFO L225 Difference]: With dead ends: 1764 [2021-11-02 12:34:59,046 INFO L226 Difference]: Without dead ends: 1481 [2021-11-02 12:34:59,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 377.84ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:34:59,047 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 843 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7357.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.86ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8007.51ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:59,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 0 Invalid, 1327 Unknown, 0 Unchecked, 11.86ms Time], IncrementalHoareTripleChecker [34 Valid, 1292 Invalid, 1 Unknown, 0 Unchecked, 8007.51ms Time] [2021-11-02 12:34:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-11-02 12:34:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1109. [2021-11-02 12:34:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1092 states have (on average 1.1620879120879122) internal successors, (1269), 1108 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1269 transitions. [2021-11-02 12:34:59,078 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1269 transitions. Word has length 85 [2021-11-02 12:34:59,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:59,079 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1269 transitions. [2021-11-02 12:34:59,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 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) [2021-11-02 12:34:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1269 transitions. [2021-11-02 12:34:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:34:59,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:59,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:34:59,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 12:34:59,081 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:34:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 53580399, now seen corresponding path program 1 times [2021-11-02 12:34:59,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:59,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41825167] [2021-11-02 12:34:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:59,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:35:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:35:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:35:03,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:35:03,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41825167] [2021-11-02 12:35:03,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41825167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:35:03,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:35:03,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-02 12:35:03,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134491273] [2021-11-02 12:35:03,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 12:35:03,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:35:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 12:35:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:35:03,529 INFO L87 Difference]: Start difference. First operand 1109 states and 1269 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) 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) [2021-11-02 12:35:06,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:35:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:35:43,576 INFO L93 Difference]: Finished difference Result 1575 states and 1757 transitions. [2021-11-02 12:35:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-02 12:35:43,577 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) 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 [2021-11-02 12:35:43,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:35:43,580 INFO L225 Difference]: With dead ends: 1575 [2021-11-02 12:35:43,581 INFO L226 Difference]: Without dead ends: 1571 [2021-11-02 12:35:43,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3201 ImplicationChecksByTransitivity, 17242.60ms TimeCoverageRelationStatistics Valid=1688, Invalid=8212, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 12:35:43,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5086 mSDsluCounter, 3508 mSDsCounter, 0 mSdLazyCounter, 6101 mSolverCounterSat, 465 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22465.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5086 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.18ms SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 6101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23929.19ms IncrementalHoareTripleChecker+Time [2021-11-02 12:35:43,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5086 Valid, 0 Invalid, 6567 Unknown, 0 Unchecked, 70.18ms Time], IncrementalHoareTripleChecker [465 Valid, 6101 Invalid, 1 Unknown, 0 Unchecked, 23929.19ms Time] [2021-11-02 12:35:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-11-02 12:35:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1085. [2021-11-02 12:35:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1068 states have (on average 1.1619850187265917) internal successors, (1241), 1084 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:35:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1241 transitions. [2021-11-02 12:35:43,628 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1241 transitions. Word has length 85 [2021-11-02 12:35:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:35:43,629 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 1241 transitions. [2021-11-02 12:35:43,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) 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) [2021-11-02 12:35:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1241 transitions. [2021-11-02 12:35:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:35:43,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:35:43,630 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] [2021-11-02 12:35:43,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:35:43,631 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:35:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:35:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1499307213, now seen corresponding path program 1 times [2021-11-02 12:35:43,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:35:43,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128112971] [2021-11-02 12:35:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:35:43,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:35:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:35:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:35:47,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:35:47,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128112971] [2021-11-02 12:35:47,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128112971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:35:47,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:35:47,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:35:47,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537355480] [2021-11-02 12:35:47,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:35:47,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:35:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:35:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:35:47,857 INFO L87 Difference]: Start difference. First operand 1085 states and 1241 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:35:50,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:36:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:06,392 INFO L93 Difference]: Finished difference Result 1281 states and 1423 transitions. [2021-11-02 12:36:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:36:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-02 12:36:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:06,395 INFO L225 Difference]: With dead ends: 1281 [2021-11-02 12:36:06,395 INFO L226 Difference]: Without dead ends: 1279 [2021-11-02 12:36:06,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1840.30ms TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:36:06,396 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1582 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 4295 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16098.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.51ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17158.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:06,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 0 Invalid, 4320 Unknown, 0 Unchecked, 39.51ms Time], IncrementalHoareTripleChecker [24 Valid, 4295 Invalid, 1 Unknown, 0 Unchecked, 17158.18ms Time] [2021-11-02 12:36:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-11-02 12:36:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1083. [2021-11-02 12:36:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1067 states have (on average 1.1611996251171508) internal successors, (1239), 1082 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1239 transitions. [2021-11-02 12:36:06,431 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1239 transitions. Word has length 86 [2021-11-02 12:36:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:06,432 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 1239 transitions. [2021-11-02 12:36:06,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1239 transitions. [2021-11-02 12:36:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:36:06,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:06,433 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] [2021-11-02 12:36:06,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 12:36:06,434 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:36:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2020324175, now seen corresponding path program 1 times [2021-11-02 12:36:06,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:06,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964410294] [2021-11-02 12:36:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:06,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:36:10,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:10,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964410294] [2021-11-02 12:36:10,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964410294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:10,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:10,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:36:10,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372524267] [2021-11-02 12:36:10,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:36:10,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:36:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:36:10,405 INFO L87 Difference]: Start difference. First operand 1083 states and 1239 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:13,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:36:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:29,472 INFO L93 Difference]: Finished difference Result 1414 states and 1579 transitions. [2021-11-02 12:36:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 12:36:29,472 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 12:36:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:29,476 INFO L225 Difference]: With dead ends: 1414 [2021-11-02 12:36:29,476 INFO L226 Difference]: Without dead ends: 1412 [2021-11-02 12:36:29,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3552.72ms TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 12:36:29,478 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2460 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15252.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.88ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16314.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:29,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2460 Valid, 0 Invalid, 3977 Unknown, 0 Unchecked, 37.88ms Time], IncrementalHoareTripleChecker [50 Valid, 3926 Invalid, 1 Unknown, 0 Unchecked, 16314.91ms Time] [2021-11-02 12:36:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-11-02 12:36:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1086. [2021-11-02 12:36:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1070 states have (on average 1.1607476635514018) internal successors, (1242), 1085 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1242 transitions. [2021-11-02 12:36:29,517 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1242 transitions. Word has length 88 [2021-11-02 12:36:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:29,517 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1242 transitions. [2021-11-02 12:36:29,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1242 transitions. [2021-11-02 12:36:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:36:29,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:29,519 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] [2021-11-02 12:36:29,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 12:36:29,519 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:36:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash -351415087, now seen corresponding path program 1 times [2021-11-02 12:36:29,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:29,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257605643] [2021-11-02 12:36:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:29,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:36:30,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:30,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257605643] [2021-11-02 12:36:30,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257605643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:30,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:30,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:36:30,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329338892] [2021-11-02 12:36:30,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:36:30,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:36:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:36:30,855 INFO L87 Difference]: Start difference. First operand 1086 states and 1242 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:33,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:36:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:45,581 INFO L93 Difference]: Finished difference Result 2004 states and 2266 transitions. [2021-11-02 12:36:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 12:36:45,582 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 12:36:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:45,586 INFO L225 Difference]: With dead ends: 2004 [2021-11-02 12:36:45,586 INFO L226 Difference]: Without dead ends: 1638 [2021-11-02 12:36:45,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3268.09ms TimeCoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 12:36:45,587 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2813 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11143.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2813 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.95ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11971.33ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:45,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2813 Valid, 0 Invalid, 2743 Unknown, 0 Unchecked, 26.95ms Time], IncrementalHoareTripleChecker [65 Valid, 2677 Invalid, 1 Unknown, 0 Unchecked, 11971.33ms Time] [2021-11-02 12:36:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-11-02 12:36:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1107. [2021-11-02 12:36:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1091 states have (on average 1.158570119156737) internal successors, (1264), 1106 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1264 transitions. [2021-11-02 12:36:45,633 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1264 transitions. Word has length 88 [2021-11-02 12:36:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:45,633 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1264 transitions. [2021-11-02 12:36:45,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1264 transitions. [2021-11-02 12:36:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:36:45,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:45,634 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] [2021-11-02 12:36:45,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 12:36:45,634 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:36:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1567568813, now seen corresponding path program 1 times [2021-11-02 12:36:45,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:45,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644970077] [2021-11-02 12:36:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:45,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:36:49,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:49,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644970077] [2021-11-02 12:36:49,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644970077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:49,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:49,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:36:49,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205078212] [2021-11-02 12:36:49,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:36:49,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:36:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:36:49,036 INFO L87 Difference]: Start difference. First operand 1107 states and 1264 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:51,121 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 [] [2021-11-02 12:37:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:01,258 INFO L93 Difference]: Finished difference Result 1220 states and 1369 transitions. [2021-11-02 12:37:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:37:01,259 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 12:37:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:01,269 INFO L225 Difference]: With dead ends: 1220 [2021-11-02 12:37:01,269 INFO L226 Difference]: Without dead ends: 1218 [2021-11-02 12:37:01,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2095.20ms TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:37:01,271 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1802 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9988.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.10ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10674.54ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:01,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 0 Invalid, 2710 Unknown, 0 Unchecked, 23.10ms Time], IncrementalHoareTripleChecker [16 Valid, 2693 Invalid, 1 Unknown, 0 Unchecked, 10674.54ms Time] [2021-11-02 12:37:01,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-11-02 12:37:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1102. [2021-11-02 12:37:01,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1087 states have (on average 1.158233670653174) internal successors, (1259), 1101 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1259 transitions. [2021-11-02 12:37:01,306 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1259 transitions. Word has length 88 [2021-11-02 12:37:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:01,306 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1259 transitions. [2021-11-02 12:37:01,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1259 transitions. [2021-11-02 12:37:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 12:37:01,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:01,308 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] [2021-11-02 12:37:01,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 12:37:01,308 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:37:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:01,309 INFO L85 PathProgramCache]: Analyzing trace with hash -993098954, now seen corresponding path program 1 times [2021-11-02 12:37:01,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:01,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760117012] [2021-11-02 12:37:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:01,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:37:01,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:01,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760117012] [2021-11-02 12:37:01,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760117012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:01,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:01,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:37:01,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064798525] [2021-11-02 12:37:01,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:37:01,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:37:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:37:01,741 INFO L87 Difference]: Start difference. First operand 1102 states and 1259 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:03,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:08,605 INFO L93 Difference]: Finished difference Result 1526 states and 1732 transitions. [2021-11-02 12:37:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:37:08,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-02 12:37:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:08,615 INFO L225 Difference]: With dead ends: 1526 [2021-11-02 12:37:08,615 INFO L226 Difference]: Without dead ends: 1520 [2021-11-02 12:37:08,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 201.07ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:37:08,616 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 200 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6176.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.99ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6675.49ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:08,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 0 Invalid, 1399 Unknown, 0 Unchecked, 7.99ms Time], IncrementalHoareTripleChecker [26 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 6675.49ms Time] [2021-11-02 12:37:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-11-02 12:37:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1142. [2021-11-02 12:37:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1127 states have (on average 1.1526175687666371) internal successors, (1299), 1141 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1299 transitions. [2021-11-02 12:37:08,669 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1299 transitions. Word has length 92 [2021-11-02 12:37:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:08,669 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1299 transitions. [2021-11-02 12:37:08,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1299 transitions. [2021-11-02 12:37:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 12:37:08,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:08,671 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] [2021-11-02 12:37:08,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 12:37:08,671 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:37:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -120904274, now seen corresponding path program 1 times [2021-11-02 12:37:08,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:08,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536495895] [2021-11-02 12:37:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:08,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:37:09,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:09,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536495895] [2021-11-02 12:37:09,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536495895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:09,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:09,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:37:09,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154635692] [2021-11-02 12:37:09,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:37:09,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:37:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:37:09,073 INFO L87 Difference]: Start difference. First operand 1142 states and 1299 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:12,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:19,036 INFO L93 Difference]: Finished difference Result 1636 states and 1832 transitions. [2021-11-02 12:37:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:37:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 12:37:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:19,038 INFO L225 Difference]: With dead ends: 1636 [2021-11-02 12:37:19,039 INFO L226 Difference]: Without dead ends: 1113 [2021-11-02 12:37:19,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 582.36ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:37:19,040 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 681 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8766.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.71ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9436.06ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:19,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 0 Invalid, 1906 Unknown, 0 Unchecked, 14.71ms Time], IncrementalHoareTripleChecker [29 Valid, 1876 Invalid, 1 Unknown, 0 Unchecked, 9436.06ms Time] [2021-11-02 12:37:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-02 12:37:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 822. [2021-11-02 12:37:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 807 states have (on average 1.1400247831474597) internal successors, (920), 821 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 920 transitions. [2021-11-02 12:37:19,070 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 920 transitions. Word has length 96 [2021-11-02 12:37:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:19,070 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 920 transitions. [2021-11-02 12:37:19,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 920 transitions. [2021-11-02 12:37:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:37:19,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:19,071 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] [2021-11-02 12:37:19,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 12:37:19,071 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:37:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1402444408, now seen corresponding path program 1 times [2021-11-02 12:37:19,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:19,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810626811] [2021-11-02 12:37:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:19,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:37:27,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:27,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810626811] [2021-11-02 12:37:27,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810626811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:27,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:27,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:37:27,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675973369] [2021-11-02 12:37:27,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:37:27,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:27,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:37:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:37:27,990 INFO L87 Difference]: Start difference. First operand 822 states and 920 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:30,109 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 [] [2021-11-02 12:37:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:44,408 INFO L93 Difference]: Finished difference Result 1383 states and 1498 transitions. [2021-11-02 12:37:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-02 12:37:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:37:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:44,411 INFO L225 Difference]: With dead ends: 1383 [2021-11-02 12:37:44,411 INFO L226 Difference]: Without dead ends: 1287 [2021-11-02 12:37:44,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 6600.23ms TimeCoverageRelationStatistics Valid=837, Invalid=2025, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 12:37:44,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5309 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 229 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10005.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.03ms SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10717.11ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:44,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5309 Valid, 0 Invalid, 2731 Unknown, 0 Unchecked, 32.03ms Time], IncrementalHoareTripleChecker [229 Valid, 2501 Invalid, 1 Unknown, 0 Unchecked, 10717.11ms Time] [2021-11-02 12:37:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-02 12:37:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 796. [2021-11-02 12:37:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 781 states have (on average 1.1434058898847632) internal successors, (893), 795 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 893 transitions. [2021-11-02 12:37:44,443 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 893 transitions. Word has length 98 [2021-11-02 12:37:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:44,444 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 893 transitions. [2021-11-02 12:37:44,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 893 transitions. [2021-11-02 12:37:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:37:44,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:44,445 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] [2021-11-02 12:37:44,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 12:37:44,445 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:37:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1528610440, now seen corresponding path program 1 times [2021-11-02 12:37:44,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:44,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114216224] [2021-11-02 12:37:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:44,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:37:44,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:44,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114216224] [2021-11-02 12:37:44,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114216224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:44,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:44,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:37:44,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560996981] [2021-11-02 12:37:44,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:37:44,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:37:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:37:44,706 INFO L87 Difference]: Start difference. First operand 796 states and 893 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:47,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:50,947 INFO L93 Difference]: Finished difference Result 1110 states and 1239 transitions. [2021-11-02 12:37:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:37:50,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:37:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:50,949 INFO L225 Difference]: With dead ends: 1110 [2021-11-02 12:37:50,949 INFO L226 Difference]: Without dead ends: 885 [2021-11-02 12:37:50,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:37:50,950 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5590.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6146.20ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:50,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 882 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [1 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 6146.20ms Time] [2021-11-02 12:37:50,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-02 12:37:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 772. [2021-11-02 12:37:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 757 states have (on average 1.1281373844121532) internal successors, (854), 771 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 854 transitions. [2021-11-02 12:37:50,978 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 854 transitions. Word has length 98 [2021-11-02 12:37:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:50,978 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 854 transitions. [2021-11-02 12:37:50,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 854 transitions. [2021-11-02 12:37:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:37:50,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:50,979 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] [2021-11-02 12:37:50,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 12:37:50,980 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:37:50,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1528621363, now seen corresponding path program 1 times [2021-11-02 12:37:50,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:50,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045248881] [2021-11-02 12:37:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:50,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:37:52,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:52,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045248881] [2021-11-02 12:37:52,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045248881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:52,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:52,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:37:52,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377061495] [2021-11-02 12:37:52,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:37:52,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:52,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:37:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:37:52,100 INFO L87 Difference]: Start difference. First operand 772 states and 854 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:55,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:38:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:09,930 INFO L93 Difference]: Finished difference Result 1145 states and 1237 transitions. [2021-11-02 12:38:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 12:38:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:38:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:09,932 INFO L225 Difference]: With dead ends: 1145 [2021-11-02 12:38:09,932 INFO L226 Difference]: Without dead ends: 1141 [2021-11-02 12:38:09,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2083.75ms TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 12:38:09,933 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1733 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15140.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.01ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16155.77ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:09,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 0 Invalid, 4269 Unknown, 0 Unchecked, 33.01ms Time], IncrementalHoareTripleChecker [41 Valid, 4227 Invalid, 1 Unknown, 0 Unchecked, 16155.77ms Time] [2021-11-02 12:38:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-11-02 12:38:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 880. [2021-11-02 12:38:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 865 states have (on average 1.1225433526011561) internal successors, (971), 879 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 971 transitions. [2021-11-02 12:38:09,967 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 971 transitions. Word has length 98 [2021-11-02 12:38:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:09,967 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 971 transitions. [2021-11-02 12:38:09,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 971 transitions. [2021-11-02 12:38:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:38:09,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:09,968 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] [2021-11-02 12:38:09,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 12:38:09,968 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:38:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1501555761, now seen corresponding path program 1 times [2021-11-02 12:38:09,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:09,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455047859] [2021-11-02 12:38:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:09,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:11,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:11,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455047859] [2021-11-02 12:38:11,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455047859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:11,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:11,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:38:11,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013335980] [2021-11-02 12:38:11,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:38:11,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:38:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:38:11,171 INFO L87 Difference]: Start difference. First operand 880 states and 971 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:14,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:38:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:32,033 INFO L93 Difference]: Finished difference Result 1372 states and 1475 transitions. [2021-11-02 12:38:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 12:38:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:38:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:32,035 INFO L225 Difference]: With dead ends: 1372 [2021-11-02 12:38:32,035 INFO L226 Difference]: Without dead ends: 1277 [2021-11-02 12:38:32,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 6122.13ms TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 12:38:32,037 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3849 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14174.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.64ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15188.89ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:32,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3849 Valid, 0 Invalid, 3718 Unknown, 0 Unchecked, 40.64ms Time], IncrementalHoareTripleChecker [89 Valid, 3628 Invalid, 1 Unknown, 0 Unchecked, 15188.89ms Time] [2021-11-02 12:38:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-02 12:38:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 836. [2021-11-02 12:38:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 821 states have (on average 1.1266747868453106) internal successors, (925), 835 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 925 transitions. [2021-11-02 12:38:32,065 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 925 transitions. Word has length 98 [2021-11-02 12:38:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:32,065 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 925 transitions. [2021-11-02 12:38:32,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 925 transitions. [2021-11-02 12:38:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:38:32,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:32,067 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] [2021-11-02 12:38:32,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 12:38:32,067 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:38:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:32,067 INFO L85 PathProgramCache]: Analyzing trace with hash 552893896, now seen corresponding path program 1 times [2021-11-02 12:38:32,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:32,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735022970] [2021-11-02 12:38:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:32,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:32,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:32,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735022970] [2021-11-02 12:38:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735022970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:32,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:38:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922633135] [2021-11-02 12:38:32,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:38:32,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:38:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:38:32,464 INFO L87 Difference]: Start difference. First operand 836 states and 925 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:35,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:38:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:41,850 INFO L93 Difference]: Finished difference Result 1221 states and 1341 transitions. [2021-11-02 12:38:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:38:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:38:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:41,852 INFO L225 Difference]: With dead ends: 1221 [2021-11-02 12:38:41,852 INFO L226 Difference]: Without dead ends: 1011 [2021-11-02 12:38:41,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 544.15ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:38:41,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 695 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8224.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.07ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8891.78ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:41,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 0 Invalid, 1949 Unknown, 0 Unchecked, 13.07ms Time], IncrementalHoareTripleChecker [29 Valid, 1919 Invalid, 1 Unknown, 0 Unchecked, 8891.78ms Time] [2021-11-02 12:38:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-02 12:38:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 824. [2021-11-02 12:38:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 809 states have (on average 1.1236093943139678) internal successors, (909), 823 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 909 transitions. [2021-11-02 12:38:41,882 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 909 transitions. Word has length 98 [2021-11-02 12:38:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:41,883 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 909 transitions. [2021-11-02 12:38:41,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 909 transitions. [2021-11-02 12:38:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:38:41,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:41,884 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] [2021-11-02 12:38:41,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 12:38:41,884 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:38:41,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 975595722, now seen corresponding path program 1 times [2021-11-02 12:38:41,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:41,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746234181] [2021-11-02 12:38:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:41,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:43,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:43,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746234181] [2021-11-02 12:38:43,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746234181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:43,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:43,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:38:43,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403012718] [2021-11-02 12:38:43,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:38:43,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:38:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:38:43,639 INFO L87 Difference]: Start difference. First operand 824 states and 909 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:45,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:38:57,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:57,588 INFO L93 Difference]: Finished difference Result 948 states and 1026 transitions. [2021-11-02 12:38:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 12:38:57,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:38:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:57,590 INFO L225 Difference]: With dead ends: 948 [2021-11-02 12:38:57,590 INFO L226 Difference]: Without dead ends: 946 [2021-11-02 12:38:57,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 4635.20ms TimeCoverageRelationStatistics Valid=357, Invalid=903, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 12:38:57,591 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2590 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9442.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.24ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10128.61ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:57,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2590 Valid, 0 Invalid, 2492 Unknown, 0 Unchecked, 26.24ms Time], IncrementalHoareTripleChecker [62 Valid, 2429 Invalid, 1 Unknown, 0 Unchecked, 10128.61ms Time] [2021-11-02 12:38:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-11-02 12:38:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 824. [2021-11-02 12:38:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 809 states have (on average 1.1223733003708283) internal successors, (908), 823 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 908 transitions. [2021-11-02 12:38:57,622 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 908 transitions. Word has length 98 [2021-11-02 12:38:57,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:57,622 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 908 transitions. [2021-11-02 12:38:57,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:57,622 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 908 transitions. [2021-11-02 12:38:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:38:57,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:57,623 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] [2021-11-02 12:38:57,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 12:38:57,623 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:38:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash 975584799, now seen corresponding path program 1 times [2021-11-02 12:38:57,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:57,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960151229] [2021-11-02 12:38:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:57,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:57,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:57,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960151229] [2021-11-02 12:38:57,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960151229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:57,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:57,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:38:57,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917339225] [2021-11-02 12:38:57,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:38:57,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:38:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:38:57,866 INFO L87 Difference]: Start difference. First operand 824 states and 908 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:00,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:05,420 INFO L93 Difference]: Finished difference Result 1042 states and 1138 transitions. [2021-11-02 12:39:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:39:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:39:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:05,426 INFO L225 Difference]: With dead ends: 1042 [2021-11-02 12:39:05,426 INFO L226 Difference]: Without dead ends: 929 [2021-11-02 12:39:05,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.39ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:39:05,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 161 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6815.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7410.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:05,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 7.41ms Time], IncrementalHoareTripleChecker [2 Valid, 1230 Invalid, 1 Unknown, 0 Unchecked, 7410.35ms Time] [2021-11-02 12:39:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-11-02 12:39:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 824. [2021-11-02 12:39:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 809 states have (on average 1.1174289245982694) internal successors, (904), 823 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 904 transitions. [2021-11-02 12:39:05,469 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 904 transitions. Word has length 98 [2021-11-02 12:39:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:05,470 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 904 transitions. [2021-11-02 12:39:05,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:05,470 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 904 transitions. [2021-11-02 12:39:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:39:05,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:05,471 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] [2021-11-02 12:39:05,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 12:39:05,472 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:39:05,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1262226801, now seen corresponding path program 1 times [2021-11-02 12:39:05,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:05,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658310315] [2021-11-02 12:39:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:05,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:08,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:08,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658310315] [2021-11-02 12:39:08,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658310315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:08,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:08,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:39:08,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242243552] [2021-11-02 12:39:08,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:39:08,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:39:08,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:39:08,680 INFO L87 Difference]: Start difference. First operand 824 states and 904 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:10,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:25,797 INFO L93 Difference]: Finished difference Result 941 states and 1015 transitions. [2021-11-02 12:39:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 12:39:25,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:39:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:25,799 INFO L225 Difference]: With dead ends: 941 [2021-11-02 12:39:25,799 INFO L226 Difference]: Without dead ends: 937 [2021-11-02 12:39:25,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 4795.06ms TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 12:39:25,800 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1421 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 3414 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12302.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.25ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13129.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:25,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 0 Invalid, 3439 Unknown, 0 Unchecked, 30.25ms Time], IncrementalHoareTripleChecker [24 Valid, 3414 Invalid, 1 Unknown, 0 Unchecked, 13129.35ms Time] [2021-11-02 12:39:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-02 12:39:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 824. [2021-11-02 12:39:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 809 states have (on average 1.1149567367119901) internal successors, (902), 823 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 902 transitions. [2021-11-02 12:39:25,847 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 902 transitions. Word has length 98 [2021-11-02 12:39:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:25,847 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 902 transitions. [2021-11-02 12:39:25,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 902 transitions. [2021-11-02 12:39:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:39:25,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:25,848 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] [2021-11-02 12:39:25,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 12:39:25,848 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:39:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1835207576, now seen corresponding path program 1 times [2021-11-02 12:39:25,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:25,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964724308] [2021-11-02 12:39:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:25,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:29,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:29,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964724308] [2021-11-02 12:39:29,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964724308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:29,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:29,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:39:29,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983650840] [2021-11-02 12:39:29,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:39:29,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:39:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:39:29,477 INFO L87 Difference]: Start difference. First operand 824 states and 902 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:31,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:42,191 INFO L93 Difference]: Finished difference Result 1062 states and 1149 transitions. [2021-11-02 12:39:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 12:39:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 12:39:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:42,193 INFO L225 Difference]: With dead ends: 1062 [2021-11-02 12:39:42,193 INFO L226 Difference]: Without dead ends: 926 [2021-11-02 12:39:42,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3024.05ms TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 12:39:42,194 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2776 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9754.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.44ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10447.27ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:42,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2776 Valid, 0 Invalid, 2639 Unknown, 0 Unchecked, 26.44ms Time], IncrementalHoareTripleChecker [105 Valid, 2533 Invalid, 1 Unknown, 0 Unchecked, 10447.27ms Time] [2021-11-02 12:39:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-02 12:39:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 824. [2021-11-02 12:39:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 809 states have (on average 1.1124845488257107) internal successors, (900), 823 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 900 transitions. [2021-11-02 12:39:42,230 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 900 transitions. Word has length 98 [2021-11-02 12:39:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:42,230 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 900 transitions. [2021-11-02 12:39:42,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 900 transitions. [2021-11-02 12:39:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:39:42,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:42,232 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] [2021-11-02 12:39:42,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 12:39:42,232 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:39:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1904825697, now seen corresponding path program 1 times [2021-11-02 12:39:42,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:42,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868870430] [2021-11-02 12:39:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:42,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:45,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:45,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868870430] [2021-11-02 12:39:45,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868870430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:45,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:45,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 12:39:45,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077512979] [2021-11-02 12:39:45,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 12:39:45,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 12:39:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:39:45,918 INFO L87 Difference]: Start difference. First operand 824 states and 900 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:48,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:05,670 INFO L93 Difference]: Finished difference Result 1044 states and 1133 transitions. [2021-11-02 12:40:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 12:40:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-02 12:40:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:05,672 INFO L225 Difference]: With dead ends: 1044 [2021-11-02 12:40:05,672 INFO L226 Difference]: Without dead ends: 1038 [2021-11-02 12:40:05,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 7218.33ms TimeCoverageRelationStatistics Valid=843, Invalid=2939, Unknown=0, NotChecked=0, Total=3782 [2021-11-02 12:40:05,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2820 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12418.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.43ms SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13312.03ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:05,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 0 Invalid, 3571 Unknown, 0 Unchecked, 32.43ms Time], IncrementalHoareTripleChecker [286 Valid, 3284 Invalid, 1 Unknown, 0 Unchecked, 13312.03ms Time] [2021-11-02 12:40:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-11-02 12:40:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 812. [2021-11-02 12:40:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 798 states have (on average 1.1115288220551378) internal successors, (887), 811 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 887 transitions. [2021-11-02 12:40:05,703 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 887 transitions. Word has length 100 [2021-11-02 12:40:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:05,704 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 887 transitions. [2021-11-02 12:40:05,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 887 transitions. [2021-11-02 12:40:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 12:40:05,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:05,705 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] [2021-11-02 12:40:05,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 12:40:05,705 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:40:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -19369606, now seen corresponding path program 1 times [2021-11-02 12:40:05,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:05,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33948835] [2021-11-02 12:40:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:05,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:09,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:09,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33948835] [2021-11-02 12:40:09,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33948835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:09,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:09,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:40:09,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349395144] [2021-11-02 12:40:09,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:40:09,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:40:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:40:09,777 INFO L87 Difference]: Start difference. First operand 812 states and 887 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 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) [2021-11-02 12:40:12,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:20,068 INFO L93 Difference]: Finished difference Result 914 states and 989 transitions. [2021-11-02 12:40:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:40:20,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 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 [2021-11-02 12:40:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:20,070 INFO L225 Difference]: With dead ends: 914 [2021-11-02 12:40:20,070 INFO L226 Difference]: Without dead ends: 826 [2021-11-02 12:40:20,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1142.50ms TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:40:20,071 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 771 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8815.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.14ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9515.00ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:20,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 0 Invalid, 2168 Unknown, 0 Unchecked, 14.14ms Time], IncrementalHoareTripleChecker [28 Valid, 2139 Invalid, 1 Unknown, 0 Unchecked, 9515.00ms Time] [2021-11-02 12:40:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-02 12:40:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 774. [2021-11-02 12:40:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 760 states have (on average 1.1131578947368421) internal successors, (846), 773 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 846 transitions. [2021-11-02 12:40:20,099 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 846 transitions. Word has length 103 [2021-11-02 12:40:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:20,099 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 846 transitions. [2021-11-02 12:40:20,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 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) [2021-11-02 12:40:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 846 transitions. [2021-11-02 12:40:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 12:40:20,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:20,100 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] [2021-11-02 12:40:20,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-02 12:40:20,101 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:40:20,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:20,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2102697280, now seen corresponding path program 1 times [2021-11-02 12:40:20,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:20,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723021882] [2021-11-02 12:40:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:20,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:23,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:23,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723021882] [2021-11-02 12:40:23,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723021882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:23,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:23,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:40:23,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973451074] [2021-11-02 12:40:23,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:40:23,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:23,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:40:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:40:23,389 INFO L87 Difference]: Start difference. First operand 774 states and 846 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 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) [2021-11-02 12:40:26,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:41,585 INFO L93 Difference]: Finished difference Result 1242 states and 1336 transitions. [2021-11-02 12:40:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 12:40:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 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 [2021-11-02 12:40:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:41,587 INFO L225 Difference]: With dead ends: 1242 [2021-11-02 12:40:41,587 INFO L226 Difference]: Without dead ends: 1084 [2021-11-02 12:40:41,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2382.99ms TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 12:40:41,588 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1339 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 4309 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15395.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.21ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16395.61ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:41,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 0 Invalid, 4344 Unknown, 0 Unchecked, 35.21ms Time], IncrementalHoareTripleChecker [34 Valid, 4309 Invalid, 1 Unknown, 0 Unchecked, 16395.61ms Time] [2021-11-02 12:40:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-02 12:40:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 787. [2021-11-02 12:40:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 773 states have (on average 1.11254851228978) internal successors, (860), 786 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 860 transitions. [2021-11-02 12:40:41,617 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 860 transitions. Word has length 111 [2021-11-02 12:40:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:41,617 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 860 transitions. [2021-11-02 12:40:41,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 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) [2021-11-02 12:40:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 860 transitions. [2021-11-02 12:40:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 12:40:41,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:41,618 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] [2021-11-02 12:40:41,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 12:40:41,619 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:40:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1512211646, now seen corresponding path program 1 times [2021-11-02 12:40:41,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:41,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079450727] [2021-11-02 12:40:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:41,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:42,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:42,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079450727] [2021-11-02 12:40:42,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079450727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:42,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:42,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:40:42,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58890314] [2021-11-02 12:40:42,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:40:42,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:40:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:40:42,308 INFO L87 Difference]: Start difference. First operand 787 states and 860 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) [2021-11-02 12:40:45,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:58,756 INFO L93 Difference]: Finished difference Result 2116 states and 2290 transitions. [2021-11-02 12:40:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 12:40:58,756 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 [2021-11-02 12:40:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:58,759 INFO L225 Difference]: With dead ends: 2116 [2021-11-02 12:40:58,759 INFO L226 Difference]: Without dead ends: 1621 [2021-11-02 12:40:58,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1528.10ms TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:40:58,761 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1641 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14114.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.89ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15066.09ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:58,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 0 Invalid, 3890 Unknown, 0 Unchecked, 30.89ms Time], IncrementalHoareTripleChecker [77 Valid, 3812 Invalid, 1 Unknown, 0 Unchecked, 15066.09ms Time] [2021-11-02 12:40:58,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-11-02 12:40:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1205. [2021-11-02 12:40:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1191 states have (on average 1.1032745591939546) internal successors, (1314), 1204 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1314 transitions. [2021-11-02 12:40:58,824 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1314 transitions. Word has length 111 [2021-11-02 12:40:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:58,824 INFO L470 AbstractCegarLoop]: Abstraction has 1205 states and 1314 transitions. [2021-11-02 12:40:58,824 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) [2021-11-02 12:40:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1314 transitions. [2021-11-02 12:40:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 12:40:58,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:58,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:40:58,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-02 12:40:58,827 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:40:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash 396246144, now seen corresponding path program 1 times [2021-11-02 12:40:58,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:58,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293374984] [2021-11-02 12:40:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:58,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:59,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:59,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293374984] [2021-11-02 12:40:59,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293374984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:59,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:59,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:40:59,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238911717] [2021-11-02 12:40:59,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:40:59,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:40:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:40:59,024 INFO L87 Difference]: Start difference. First operand 1205 states and 1314 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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) [2021-11-02 12:41:01,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:03,709 INFO L93 Difference]: Finished difference Result 1376 states and 1502 transitions. [2021-11-02 12:41:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:41:03,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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 [2021-11-02 12:41:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:03,712 INFO L225 Difference]: With dead ends: 1376 [2021-11-02 12:41:03,712 INFO L226 Difference]: Without dead ends: 811 [2021-11-02 12:41:03,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:41:03,714 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4235.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4602.70ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:03,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 868 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [8 Valid, 859 Invalid, 1 Unknown, 0 Unchecked, 4602.70ms Time] [2021-11-02 12:41:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-02 12:41:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 796. [2021-11-02 12:41:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 782 states have (on average 1.092071611253197) internal successors, (854), 795 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 854 transitions. [2021-11-02 12:41:03,744 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 854 transitions. Word has length 111 [2021-11-02 12:41:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:03,744 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 854 transitions. [2021-11-02 12:41:03,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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) [2021-11-02 12:41:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 854 transitions. [2021-11-02 12:41:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 12:41:03,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:03,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:03,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-02 12:41:03,745 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:41:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1929761287, now seen corresponding path program 1 times [2021-11-02 12:41:03,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:03,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859794954] [2021-11-02 12:41:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:03,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:41:04,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:04,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859794954] [2021-11-02 12:41:04,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859794954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:04,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:04,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:41:04,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973976005] [2021-11-02 12:41:04,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:41:04,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:41:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:41:04,358 INFO L87 Difference]: Start difference. First operand 796 states and 854 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:07,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:16,411 INFO L93 Difference]: Finished difference Result 975 states and 1050 transitions. [2021-11-02 12:41:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:41:16,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-02 12:41:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:16,413 INFO L225 Difference]: With dead ends: 975 [2021-11-02 12:41:16,413 INFO L226 Difference]: Without dead ends: 969 [2021-11-02 12:41:16,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 933.77ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:41:16,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 588 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 113 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10545.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.32ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11317.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:16,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 0 Invalid, 2920 Unknown, 0 Unchecked, 18.32ms Time], IncrementalHoareTripleChecker [113 Valid, 2806 Invalid, 1 Unknown, 0 Unchecked, 11317.18ms Time] [2021-11-02 12:41:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-02 12:41:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 801. [2021-11-02 12:41:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 788 states have (on average 1.0850253807106598) internal successors, (855), 800 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 855 transitions. [2021-11-02 12:41:16,445 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 855 transitions. Word has length 113 [2021-11-02 12:41:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:16,445 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 855 transitions. [2021-11-02 12:41:16,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 855 transitions. [2021-11-02 12:41:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 12:41:16,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:16,446 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] [2021-11-02 12:41:16,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-02 12:41:16,446 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:41:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1130881669, now seen corresponding path program 1 times [2021-11-02 12:41:16,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:16,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187168769] [2021-11-02 12:41:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:16,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:41:18,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:18,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187168769] [2021-11-02 12:41:18,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187168769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:18,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:18,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 12:41:18,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469531285] [2021-11-02 12:41:18,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:41:18,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:41:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:41:18,504 INFO L87 Difference]: Start difference. First operand 801 states and 855 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:20,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:48,691 INFO L93 Difference]: Finished difference Result 1445 states and 1513 transitions. [2021-11-02 12:41:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-02 12:41:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-02 12:41:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:48,694 INFO L225 Difference]: With dead ends: 1445 [2021-11-02 12:41:48,694 INFO L226 Difference]: Without dead ends: 1343 [2021-11-02 12:41:48,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 9231.12ms TimeCoverageRelationStatistics Valid=1086, Invalid=4464, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 12:41:48,696 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3103 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 6522 mSolverCounterSat, 128 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20604.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.91ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 6522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21838.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:48,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 0 Invalid, 6651 Unknown, 0 Unchecked, 57.91ms Time], IncrementalHoareTripleChecker [128 Valid, 6522 Invalid, 1 Unknown, 0 Unchecked, 21838.36ms Time] [2021-11-02 12:41:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-11-02 12:41:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 825. [2021-11-02 12:41:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 812 states have (on average 1.083743842364532) internal successors, (880), 824 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 880 transitions. [2021-11-02 12:41:48,745 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 880 transitions. Word has length 114 [2021-11-02 12:41:48,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:48,745 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 880 transitions. [2021-11-02 12:41:48,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 880 transitions. [2021-11-02 12:41:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 12:41:48,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:48,747 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] [2021-11-02 12:41:48,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-02 12:41:48,747 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:41:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1570489985, now seen corresponding path program 1 times [2021-11-02 12:41:48,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:48,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976679812] [2021-11-02 12:41:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:48,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:41:50,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:50,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976679812] [2021-11-02 12:41:50,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976679812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:50,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:50,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:41:50,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118200425] [2021-11-02 12:41:50,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:41:50,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:41:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:41:50,453 INFO L87 Difference]: Start difference. First operand 825 states and 880 transitions. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:53,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:04,181 INFO L93 Difference]: Finished difference Result 1113 states and 1165 transitions. [2021-11-02 12:42:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:42:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-02 12:42:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:04,183 INFO L225 Difference]: With dead ends: 1113 [2021-11-02 12:42:04,183 INFO L226 Difference]: Without dead ends: 978 [2021-11-02 12:42:04,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1662.12ms TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:42:04,184 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 954 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11685.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.78ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12529.05ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:04,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 0 Invalid, 3139 Unknown, 0 Unchecked, 21.78ms Time], IncrementalHoareTripleChecker [10 Valid, 3128 Invalid, 1 Unknown, 0 Unchecked, 12529.05ms Time] [2021-11-02 12:42:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-02 12:42:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 727. [2021-11-02 12:42:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 714 states have (on average 1.0784313725490196) internal successors, (770), 726 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 770 transitions. [2021-11-02 12:42:04,223 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 770 transitions. Word has length 114 [2021-11-02 12:42:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:04,224 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 770 transitions. [2021-11-02 12:42:04,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 770 transitions. [2021-11-02 12:42:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 12:42:04,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:04,225 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] [2021-11-02 12:42:04,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-02 12:42:04,226 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-02 12:42:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2079309597, now seen corresponding path program 1 times [2021-11-02 12:42:04,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:04,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053433454] [2021-11-02 12:42:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:04,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:42:11,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:11,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053433454] [2021-11-02 12:42:11,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053433454] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:42:11,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478868803] [2021-11-02 12:42:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:11,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:42:11,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:42:11,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:42:11,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 12:42:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:11,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-02 12:42:11,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:42:11,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 12:42:12,416 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 12:42:12,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-02 12:42:12,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-02 12:42:15,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:42:15,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:42:15,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:42:15,505 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 12:42:15,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2021-11-02 12:42:15,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:42:15,593 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 12:42:15,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2021-11-02 12:42:19,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:42:19,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 Killed by 15