./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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_dynamic_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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:28:29,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:28:29,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:28:29,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:28:29,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:28:29,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:28:29,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:28:29,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:28:29,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:28:29,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:28:29,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:28:29,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:28:29,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:28:29,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:28:29,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:28:29,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:28:29,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:28:29,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:28:29,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:28:29,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:28:29,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:28:29,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:28:29,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:28:29,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:28:29,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:28:29,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:28:29,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:28:29,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:28:29,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:28:29,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:28:29,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:28:29,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:28:29,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:28:29,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:28:29,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:28:29,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:28:29,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:28:29,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:28:29,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:28:29,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:28:29,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:28:29,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:28:29,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:28:29,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:28:29,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:28:29,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:28:29,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:28:29,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:28:29,411 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:28:29,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:28:29,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:28:29,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:28:29,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:28:29,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:28:29,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:28:29,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:28:29,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:28:29,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:28:29,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:28:29,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:28:29,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:28:29,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:28:29,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:28:29,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:28:29,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:28:29,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:28:29,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:28:29,415 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:28:29,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:28:29,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:28:29,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:28:29,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-02 12:28:29,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:28:29,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:28:29,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:28:29,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:28:29,643 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:28:29,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-02 12:28:29,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623a36bd4/37a7b2d461e041c9aac59ce9ad6e1fac/FLAG07d641b30 [2021-11-02 12:28:30,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:28:30,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-02 12:28:30,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623a36bd4/37a7b2d461e041c9aac59ce9ad6e1fac/FLAG07d641b30 [2021-11-02 12:28:30,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623a36bd4/37a7b2d461e041c9aac59ce9ad6e1fac [2021-11-02 12:28:30,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:28:30,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:28:30,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:28:30,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:28:30,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:28:30,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:30" (1/1) ... [2021-11-02 12:28:30,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a028cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:30, skipping insertion in model container [2021-11-02 12:28:30,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:30" (1/1) ... [2021-11-02 12:28:30,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:28:30,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:28:31,082 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_dynamic_harness.i[4501,4514] [2021-11-02 12:28:31,089 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_dynamic_harness.i[4561,4574] [2021-11-02 12:28:31,114 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:28:31,121 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:28:31,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:31,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:28:31,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:28:31,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:28:31,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:28:31,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:28:31,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:28:31,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:28:31,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:28:31,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:28:31,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:28:32,017 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:28:32,072 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:28:32,261 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:28:32,289 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_dynamic_harness.i[4501,4514] [2021-11-02 12:28:32,290 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_dynamic_harness.i[4561,4574] [2021-11-02 12:28:32,292 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:28:32,295 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:28:32,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:28:32,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:28:32,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:28:32,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:28:32,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:28:32,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:28:32,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:28:32,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:28:32,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:28:32,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:28:32,410 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:28:32,426 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,426 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:28:32,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:28:32,658 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:28:32,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32 WrapperNode [2021-11-02 12:28:32,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:28:32,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:28:32,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:28:32,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:28:32,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:28:32,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:28:32,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:28:32,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:28:32,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:28:32,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:28:32,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:28:32,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:28:32,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (1/1) ... [2021-11-02 12:28:32,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:28:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:28:33,003 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 12:28:33,043 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 12:28:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:28:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:28:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:28:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:28:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:28:33,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:28:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 12:28:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:28:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:28:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:28:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:28:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:28:37,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:28:37,704 INFO L299 CfgBuilder]: Removed 228 assume(true) statements. [2021-11-02 12:28:37,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:37 BoogieIcfgContainer [2021-11-02 12:28:37,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:28:37,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:28:37,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:28:37,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:28:37,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:28:30" (1/3) ... [2021-11-02 12:28:37,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf31986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:37, skipping insertion in model container [2021-11-02 12:28:37,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:32" (2/3) ... [2021-11-02 12:28:37,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf31986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:28:37, skipping insertion in model container [2021-11-02 12:28:37,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:28:37" (3/3) ... [2021-11-02 12:28:37,715 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-11-02 12:28:37,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:28:37,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-02 12:28:37,766 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:28:37,772 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 12:28:37,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-02 12:28:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 389 states have (on average 1.4601542416452442) internal successors, (568), 409 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 12:28:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 12:28:37,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:28:37,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:28:37,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:28:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:28:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash -127780390, now seen corresponding path program 1 times [2021-11-02 12:28:37,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:28:37,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815110857] [2021-11-02 12:28:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:28:37,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:28:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:28:38,397 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 12:28:38,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:28:38,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815110857] [2021-11-02 12:28:38,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815110857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:28:38,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:28:38,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:28:38,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293431439] [2021-11-02 12:28:38,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:28:38,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:28:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:28:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:28:38,435 INFO L87 Difference]: Start difference. First operand has 410 states, 389 states have (on average 1.4601542416452442) internal successors, (568), 409 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) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:28:40,509 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 12:28:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:28:42,747 INFO L93 Difference]: Finished difference Result 813 states and 1127 transitions. [2021-11-02 12:28:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:28:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-02 12:28:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:28:42,761 INFO L225 Difference]: With dead ends: 813 [2021-11-02 12:28:42,765 INFO L226 Difference]: Without dead ends: 405 [2021-11-02 12:28:42,784 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 12:28:42,787 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3659.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4199.01ms IncrementalHoareTripleChecker+Time [2021-11-02 12:28:42,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 518 Unknown, 0 Unchecked, 6.92ms Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 1 Unknown, 0 Unchecked, 4199.01ms Time] [2021-11-02 12:28:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-02 12:28:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-02 12:28:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.3324675324675326) internal successors, (513), 404 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 12:28:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 513 transitions. [2021-11-02 12:28:42,829 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 513 transitions. Word has length 39 [2021-11-02 12:28:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:28:42,829 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 513 transitions. [2021-11-02 12:28:42,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:28:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 513 transitions. [2021-11-02 12:28:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 12:28:42,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:28:42,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:28:42,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:28:42,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:28:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:28:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1892452164, now seen corresponding path program 1 times [2021-11-02 12:28:42,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:28:42,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649873544] [2021-11-02 12:28:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:28:42,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:28:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:28:43,113 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 12:28:43,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:28:43,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649873544] [2021-11-02 12:28:43,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649873544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:28:43,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:28:43,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:28:43,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587991675] [2021-11-02 12:28:43,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:28:43,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:28:43,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:28:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:28:43,116 INFO L87 Difference]: Start difference. First operand 405 states and 513 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:28:45,187 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 12:28:48,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:28:48,627 INFO L93 Difference]: Finished difference Result 787 states and 995 transitions. [2021-11-02 12:28:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:28:48,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 12:28:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:28:48,630 INFO L225 Difference]: With dead ends: 787 [2021-11-02 12:28:48,630 INFO L226 Difference]: Without dead ends: 405 [2021-11-02 12:28:48,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:28:48,631 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 624 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4871.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.64ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5371.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:28:48,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 0 Invalid, 898 Unknown, 0 Unchecked, 18.64ms Time], IncrementalHoareTripleChecker [8 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 5371.36ms Time] [2021-11-02 12:28:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-02 12:28:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-02 12:28:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.3246753246753247) internal successors, (510), 404 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 12:28:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 510 transitions. [2021-11-02 12:28:48,653 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 510 transitions. Word has length 41 [2021-11-02 12:28:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:28:48,653 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 510 transitions. [2021-11-02 12:28:48,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:28:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 510 transitions. [2021-11-02 12:28:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:28:48,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:28:48,657 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] [2021-11-02 12:28:48,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:28:48,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:28:48,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:28:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1022569822, now seen corresponding path program 1 times [2021-11-02 12:28:48,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:28:48,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703199611] [2021-11-02 12:28:48,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:28:48,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:28:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:28:48,870 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 12:28:48,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:28:48,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703199611] [2021-11-02 12:28:48,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703199611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:28:48,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:28:48,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:28:48,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421986338] [2021-11-02 12:28:48,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:28:48,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:28:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:28:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:28:48,872 INFO L87 Difference]: Start difference. First operand 405 states and 510 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:28:50,925 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 12:28:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:28:56,765 INFO L93 Difference]: Finished difference Result 950 states and 1220 transitions. [2021-11-02 12:28:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:28:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-02 12:28:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:28:56,768 INFO L225 Difference]: With dead ends: 950 [2021-11-02 12:28:56,768 INFO L226 Difference]: Without dead ends: 559 [2021-11-02 12:28:56,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:28:56,769 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7129.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.39ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7731.15ms IncrementalHoareTripleChecker+Time [2021-11-02 12:28:56,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 1771 Unknown, 0 Unchecked, 18.39ms Time], IncrementalHoareTripleChecker [25 Valid, 1745 Invalid, 1 Unknown, 0 Unchecked, 7731.15ms Time] [2021-11-02 12:28:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-02 12:28:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 419. [2021-11-02 12:28:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 399 states have (on average 1.31328320802005) internal successors, (524), 418 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 12:28:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 524 transitions. [2021-11-02 12:28:56,783 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 524 transitions. Word has length 53 [2021-11-02 12:28:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:28:56,783 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 524 transitions. [2021-11-02 12:28:56,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:28:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 524 transitions. [2021-11-02 12:28:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:28:56,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:28:56,784 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] [2021-11-02 12:28:56,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:28:56,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:28:56,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:28:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1446216544, now seen corresponding path program 1 times [2021-11-02 12:28:56,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:28:56,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591979864] [2021-11-02 12:28:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:28:56,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:28:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:28:57,036 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 12:28:57,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:28:57,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591979864] [2021-11-02 12:28:57,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591979864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:28:57,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:28:57,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:28:57,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975502734] [2021-11-02 12:28:57,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:28:57,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:28:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:28:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:28:57,039 INFO L87 Difference]: Start difference. First operand 419 states and 524 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:28:59,098 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 12:29:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:04,355 INFO L93 Difference]: Finished difference Result 884 states and 1115 transitions. [2021-11-02 12:29:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:29:04,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-02 12:29:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:04,357 INFO L225 Difference]: With dead ends: 884 [2021-11-02 12:29:04,357 INFO L226 Difference]: Without dead ends: 489 [2021-11-02 12:29:04,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:29:04,359 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6632.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.11ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7180.06ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:04,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 1566 Unknown, 0 Unchecked, 17.11ms Time], IncrementalHoareTripleChecker [25 Valid, 1540 Invalid, 1 Unknown, 0 Unchecked, 7180.06ms Time] [2021-11-02 12:29:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-02 12:29:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 433. [2021-11-02 12:29:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.3026634382566586) internal successors, (538), 432 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 12:29:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 538 transitions. [2021-11-02 12:29:04,376 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 538 transitions. Word has length 53 [2021-11-02 12:29:04,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:04,377 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 538 transitions. [2021-11-02 12:29:04,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:29:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 538 transitions. [2021-11-02 12:29:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:29:04,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:04,379 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] [2021-11-02 12:29:04,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:29:04,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:29:04,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1497261274, now seen corresponding path program 1 times [2021-11-02 12:29:04,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:04,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60295494] [2021-11-02 12:29:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:04,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:04,680 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 12:29:04,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:04,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60295494] [2021-11-02 12:29:04,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60295494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:04,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:04,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:29:04,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195620930] [2021-11-02 12:29:04,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:29:04,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:04,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:29:04,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:04,682 INFO L87 Difference]: Start difference. First operand 433 states and 538 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:29:06,745 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 12:29:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:10,359 INFO L93 Difference]: Finished difference Result 819 states and 1016 transitions. [2021-11-02 12:29:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:29:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-02 12:29:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:10,362 INFO L225 Difference]: With dead ends: 819 [2021-11-02 12:29:10,362 INFO L226 Difference]: Without dead ends: 433 [2021-11-02 12:29:10,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.78ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:29:10,363 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 465 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5097.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.27ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5595.78ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:10,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 0 Invalid, 968 Unknown, 0 Unchecked, 9.27ms Time], IncrementalHoareTripleChecker [7 Valid, 960 Invalid, 1 Unknown, 0 Unchecked, 5595.78ms Time] [2021-11-02 12:29:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-02 12:29:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-11-02 12:29:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.297820823244552) internal successors, (536), 432 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 12:29:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 536 transitions. [2021-11-02 12:29:10,371 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 536 transitions. Word has length 53 [2021-11-02 12:29:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:10,372 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 536 transitions. [2021-11-02 12:29:10,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:29:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 536 transitions. [2021-11-02 12:29:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 12:29:10,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:10,373 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 12:29:10,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:29:10,373 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:29:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash -98028523, now seen corresponding path program 1 times [2021-11-02 12:29:10,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:10,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778971590] [2021-11-02 12:29:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:10,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:29:10,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:10,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778971590] [2021-11-02 12:29:10,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778971590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:10,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:10,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:29:10,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904303605] [2021-11-02 12:29:10,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:29:10,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:10,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:29:10,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:29:10,807 INFO L87 Difference]: Start difference. First operand 433 states and 536 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 12:29:12,857 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 12:29:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:16,742 INFO L93 Difference]: Finished difference Result 785 states and 968 transitions. [2021-11-02 12:29:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:29:16,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 12:29:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:16,744 INFO L225 Difference]: With dead ends: 785 [2021-11-02 12:29:16,744 INFO L226 Difference]: Without dead ends: 433 [2021-11-02 12:29:16,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 285.41ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:29:16,746 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1908 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5198.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.97ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5693.32ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:16,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 0 Invalid, 1054 Unknown, 0 Unchecked, 19.97ms Time], IncrementalHoareTripleChecker [19 Valid, 1034 Invalid, 1 Unknown, 0 Unchecked, 5693.32ms Time] [2021-11-02 12:29:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-02 12:29:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-11-02 12:29:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.2857142857142858) internal successors, (531), 432 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 12:29:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 531 transitions. [2021-11-02 12:29:16,754 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 531 transitions. Word has length 55 [2021-11-02 12:29:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:16,754 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 531 transitions. [2021-11-02 12:29:16,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 12:29:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 531 transitions. [2021-11-02 12:29:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 12:29:16,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:16,755 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 12:29:16,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:29:16,755 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:29:16,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1918822000, now seen corresponding path program 1 times [2021-11-02 12:29:16,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:16,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416354131] [2021-11-02 12:29:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:16,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:17,406 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 12:29:17,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:17,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416354131] [2021-11-02 12:29:17,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416354131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:17,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:17,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:29:17,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423595344] [2021-11-02 12:29:17,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:29:17,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:29:17,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:29:17,408 INFO L87 Difference]: Start difference. First operand 433 states and 531 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:29:19,464 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 12:29:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:31,859 INFO L93 Difference]: Finished difference Result 965 states and 1172 transitions. [2021-11-02 12:29:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 12:29:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:29:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:31,862 INFO L225 Difference]: With dead ends: 965 [2021-11-02 12:29:31,862 INFO L226 Difference]: Without dead ends: 826 [2021-11-02 12:29:31,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 407.96ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:29:31,863 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1478 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13156.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.31ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14030.01ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:31,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 0 Invalid, 3893 Unknown, 0 Unchecked, 46.31ms Time], IncrementalHoareTripleChecker [23 Valid, 3869 Invalid, 1 Unknown, 0 Unchecked, 14030.01ms Time] [2021-11-02 12:29:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-02 12:29:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 478. [2021-11-02 12:29:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 458 states have (on average 1.2838427947598254) internal successors, (588), 477 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 12:29:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2021-11-02 12:29:31,875 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 57 [2021-11-02 12:29:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:31,876 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2021-11-02 12:29:31,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:29:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2021-11-02 12:29:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 12:29:31,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:31,877 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 12:29:31,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:29:31,877 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:29:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1112224199, now seen corresponding path program 1 times [2021-11-02 12:29:31,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:31,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496660192] [2021-11-02 12:29:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:31,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:32,205 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 12:29:32,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:32,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496660192] [2021-11-02 12:29:32,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496660192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:32,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:32,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:29:32,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019358889] [2021-11-02 12:29:32,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:29:32,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:29:32,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:29:32,207 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:34,252 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 12:29:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:29:43,942 INFO L93 Difference]: Finished difference Result 1004 states and 1219 transitions. [2021-11-02 12:29:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:29:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 12:29:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:29:43,945 INFO L225 Difference]: With dead ends: 1004 [2021-11-02 12:29:43,945 INFO L226 Difference]: Without dead ends: 942 [2021-11-02 12:29:43,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 150.21ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:29:43,946 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 611 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10766.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.10ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11516.19ms IncrementalHoareTripleChecker+Time [2021-11-02 12:29:43,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 0 Invalid, 3012 Unknown, 0 Unchecked, 21.10ms Time], IncrementalHoareTripleChecker [9 Valid, 3002 Invalid, 1 Unknown, 0 Unchecked, 11516.19ms Time] [2021-11-02 12:29:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-11-02 12:29:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 480. [2021-11-02 12:29:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 460 states have (on average 1.2826086956521738) internal successors, (590), 479 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 12:29:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 590 transitions. [2021-11-02 12:29:43,961 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 590 transitions. Word has length 57 [2021-11-02 12:29:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:29:43,962 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 590 transitions. [2021-11-02 12:29:43,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:29:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 590 transitions. [2021-11-02 12:29:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 12:29:43,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:29:43,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:43,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:29:43,964 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:29:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:29:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1112235122, now seen corresponding path program 1 times [2021-11-02 12:29:43,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:29:43,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422792011] [2021-11-02 12:29:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:29:43,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:29:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:29:45,105 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 12:29:45,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:29:45,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422792011] [2021-11-02 12:29:45,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422792011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:29:45,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:29:45,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:29:45,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089708003] [2021-11-02 12:29:45,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:29:45,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:29:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:29:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:29:45,107 INFO L87 Difference]: Start difference. First operand 480 states and 590 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 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 12:29:47,168 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 12:30:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:00,039 INFO L93 Difference]: Finished difference Result 954 states and 1158 transitions. [2021-11-02 12:30:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:30:00,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 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 12:30:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:00,043 INFO L225 Difference]: With dead ends: 954 [2021-11-02 12:30:00,043 INFO L226 Difference]: Without dead ends: 952 [2021-11-02 12:30:00,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 949.89ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:30:00,044 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2973 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 3606 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13254.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.46ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14217.76ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:00,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 0 Invalid, 3695 Unknown, 0 Unchecked, 40.46ms Time], IncrementalHoareTripleChecker [88 Valid, 3606 Invalid, 1 Unknown, 0 Unchecked, 14217.76ms Time] [2021-11-02 12:30:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-11-02 12:30:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 633. [2021-11-02 12:30:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 613 states have (on average 1.2920065252854813) internal successors, (792), 632 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 12:30:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 792 transitions. [2021-11-02 12:30:00,061 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 792 transitions. Word has length 57 [2021-11-02 12:30:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:00,062 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 792 transitions. [2021-11-02 12:30:00,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 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 12:30:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 792 transitions. [2021-11-02 12:30:00,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 12:30:00,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:00,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:30:00,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:30:00,063 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:30:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1070592202, now seen corresponding path program 1 times [2021-11-02 12:30:00,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:00,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992303035] [2021-11-02 12:30:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:00,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:01,165 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 12:30:01,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:01,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992303035] [2021-11-02 12:30:01,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992303035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:01,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:01,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:30:01,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912301894] [2021-11-02 12:30:01,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:30:01,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:30:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:30:01,166 INFO L87 Difference]: Start difference. First operand 633 states and 792 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:03,229 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 12:30:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:42,833 INFO L93 Difference]: Finished difference Result 2182 states and 2716 transitions. [2021-11-02 12:30:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 12:30:42,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 12:30:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:42,840 INFO L225 Difference]: With dead ends: 2182 [2021-11-02 12:30:42,840 INFO L226 Difference]: Without dead ends: 2180 [2021-11-02 12:30:42,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5357.44ms TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 12:30:42,841 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5131 mSDsluCounter, 7791 mSDsCounter, 0 mSdLazyCounter, 11352 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34522.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5131 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.75ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 11352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36395.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:42,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5131 Valid, 0 Invalid, 11476 Unknown, 0 Unchecked, 106.75ms Time], IncrementalHoareTripleChecker [123 Valid, 11352 Invalid, 1 Unknown, 0 Unchecked, 36395.52ms Time] [2021-11-02 12:30:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-11-02 12:30:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 906. [2021-11-02 12:30:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 886 states have (on average 1.2968397291196387) internal successors, (1149), 905 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 12:30:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1149 transitions. [2021-11-02 12:30:42,865 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1149 transitions. Word has length 60 [2021-11-02 12:30:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:42,866 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1149 transitions. [2021-11-02 12:30:42,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:30:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1149 transitions. [2021-11-02 12:30:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 12:30:42,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:42,867 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 12:30:42,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:30:42,867 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:30:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash 261202557, now seen corresponding path program 1 times [2021-11-02 12:30:42,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:42,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353555323] [2021-11-02 12:30:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:42,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:43,116 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 12:30:43,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:43,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353555323] [2021-11-02 12:30:43,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353555323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:43,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:43,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:30:43,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664999290] [2021-11-02 12:30:43,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:30:43,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:30:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:30:43,117 INFO L87 Difference]: Start difference. First operand 906 states and 1149 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 12:30:45,170 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 12:30:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:30:48,691 INFO L93 Difference]: Finished difference Result 1188 states and 1497 transitions. [2021-11-02 12:30:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:30:48,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 12:30:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:30:48,694 INFO L225 Difference]: With dead ends: 1188 [2021-11-02 12:30:48,694 INFO L226 Difference]: Without dead ends: 906 [2021-11-02 12:30:48,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 154.73ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:30:48,695 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1011 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4919.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.31ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5396.17ms IncrementalHoareTripleChecker+Time [2021-11-02 12:30:48,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 0 Invalid, 930 Unknown, 0 Unchecked, 10.31ms Time], IncrementalHoareTripleChecker [9 Valid, 920 Invalid, 1 Unknown, 0 Unchecked, 5396.17ms Time] [2021-11-02 12:30:48,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-02 12:30:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2021-11-02 12:30:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 886 states have (on average 1.2855530474040633) internal successors, (1139), 905 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 12:30:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1139 transitions. [2021-11-02 12:30:48,717 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1139 transitions. Word has length 61 [2021-11-02 12:30:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:30:48,718 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1139 transitions. [2021-11-02 12:30:48,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 12:30:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1139 transitions. [2021-11-02 12:30:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 12:30:48,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:30:48,719 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 12:30:48,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:30:48,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:30:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:30:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash -88100152, now seen corresponding path program 1 times [2021-11-02 12:30:48,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:30:48,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677219531] [2021-11-02 12:30:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:30:48,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:30:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:30:49,246 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 12:30:49,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:30:49,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677219531] [2021-11-02 12:30:49,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677219531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:30:49,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:30:49,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:30:49,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410133856] [2021-11-02 12:30:49,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:30:49,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:30:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:30:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:30:49,247 INFO L87 Difference]: Start difference. First operand 906 states and 1139 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 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 12:30:51,299 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 12:31:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:31:07,362 INFO L93 Difference]: Finished difference Result 2201 states and 2728 transitions. [2021-11-02 12:31:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:31:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 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 12:31:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:31:07,366 INFO L225 Difference]: With dead ends: 2201 [2021-11-02 12:31:07,366 INFO L226 Difference]: Without dead ends: 1516 [2021-11-02 12:31:07,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 806.08ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:31:07,367 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1535 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 4996 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16306.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.34ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17307.11ms IncrementalHoareTripleChecker+Time [2021-11-02 12:31:07,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 0 Invalid, 5044 Unknown, 0 Unchecked, 44.34ms Time], IncrementalHoareTripleChecker [47 Valid, 4996 Invalid, 1 Unknown, 0 Unchecked, 17307.11ms Time] [2021-11-02 12:31:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-11-02 12:31:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1292. [2021-11-02 12:31:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1272 states have (on average 1.2814465408805031) internal successors, (1630), 1291 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states 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 12:31:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1630 transitions. [2021-11-02 12:31:07,396 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1630 transitions. Word has length 61 [2021-11-02 12:31:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:31:07,396 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 1630 transitions. [2021-11-02 12:31:07,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 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 12:31:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1630 transitions. [2021-11-02 12:31:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 12:31:07,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:31:07,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:31:07,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:31:07,397 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:31:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:31:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1361473336, now seen corresponding path program 1 times [2021-11-02 12:31:07,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:31:07,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827828877] [2021-11-02 12:31:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:31:07,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:31:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:31:07,822 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 12:31:07,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:31:07,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827828877] [2021-11-02 12:31:07,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827828877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:31:07,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:31:07,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:31:07,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320015847] [2021-11-02 12:31:07,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:31:07,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:31:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:31:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:31:07,824 INFO L87 Difference]: Start difference. First operand 1292 states and 1630 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:31:09,868 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 12:31:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:31:23,574 INFO L93 Difference]: Finished difference Result 2456 states and 3100 transitions. [2021-11-02 12:31:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:31:23,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-02 12:31:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:31:23,580 INFO L225 Difference]: With dead ends: 2456 [2021-11-02 12:31:23,581 INFO L226 Difference]: Without dead ends: 2340 [2021-11-02 12:31:23,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 883.14ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:31:23,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1659 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 4349 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13946.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.85ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14804.46ms IncrementalHoareTripleChecker+Time [2021-11-02 12:31:23,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 0 Invalid, 4397 Unknown, 0 Unchecked, 35.85ms Time], IncrementalHoareTripleChecker [47 Valid, 4349 Invalid, 1 Unknown, 0 Unchecked, 14804.46ms Time] [2021-11-02 12:31:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-11-02 12:31:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1660. [2021-11-02 12:31:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1640 states have (on average 1.2817073170731708) internal successors, (2102), 1659 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states 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 12:31:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2102 transitions. [2021-11-02 12:31:23,629 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2102 transitions. Word has length 62 [2021-11-02 12:31:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:31:23,629 INFO L470 AbstractCegarLoop]: Abstraction has 1660 states and 2102 transitions. [2021-11-02 12:31:23,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:31:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2102 transitions. [2021-11-02 12:31:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:31:23,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:31:23,630 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] [2021-11-02 12:31:23,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:31:23,631 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:31:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:31:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 419396586, now seen corresponding path program 1 times [2021-11-02 12:31:23,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:31:23,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918053968] [2021-11-02 12:31:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:31:23,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:31:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:31:24,696 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 12:31:24,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:31:24,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918053968] [2021-11-02 12:31:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918053968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:31:24,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:31:24,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:31:24,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027277262] [2021-11-02 12:31:24,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:31:24,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:31:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:31:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:31:24,698 INFO L87 Difference]: Start difference. First operand 1660 states and 2102 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:31:26,751 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 12:32:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:11,753 INFO L93 Difference]: Finished difference Result 6315 states and 7964 transitions. [2021-11-02 12:32:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 12:32:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 12:32:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:11,765 INFO L225 Difference]: With dead ends: 6315 [2021-11-02 12:32:11,766 INFO L226 Difference]: Without dead ends: 5153 [2021-11-02 12:32:11,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 6716.85ms TimeCoverageRelationStatistics Valid=984, Invalid=3708, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 12:32:11,768 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3765 mSDsluCounter, 7617 mSDsCounter, 0 mSdLazyCounter, 12321 mSolverCounterSat, 197 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38110.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3765 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.53ms SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 12321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40174.50ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:11,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3765 Valid, 0 Invalid, 12519 Unknown, 0 Unchecked, 125.53ms Time], IncrementalHoareTripleChecker [197 Valid, 12321 Invalid, 1 Unknown, 0 Unchecked, 40174.50ms Time] [2021-11-02 12:32:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2021-11-02 12:32:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 2859. [2021-11-02 12:32:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2839 states have (on average 1.280732652342374) internal successors, (3636), 2858 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states 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 12:32:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3636 transitions. [2021-11-02 12:32:11,854 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3636 transitions. Word has length 64 [2021-11-02 12:32:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:11,855 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 3636 transitions. [2021-11-02 12:32:11,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3636 transitions. [2021-11-02 12:32:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:32:11,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:11,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:32:11,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:32:11,857 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:32:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash 403877868, now seen corresponding path program 1 times [2021-11-02 12:32:11,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:11,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781070651] [2021-11-02 12:32:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:11,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:12,457 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 12:32:12,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:12,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781070651] [2021-11-02 12:32:12,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781070651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:12,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:12,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:32:12,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998175249] [2021-11-02 12:32:12,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:32:12,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:32:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:32:12,458 INFO L87 Difference]: Start difference. First operand 2859 states and 3636 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:14,517 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 12:32:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:24,053 INFO L93 Difference]: Finished difference Result 3277 states and 4116 transitions. [2021-11-02 12:32:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:32:24,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 12:32:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:24,061 INFO L225 Difference]: With dead ends: 3277 [2021-11-02 12:32:24,061 INFO L226 Difference]: Without dead ends: 3275 [2021-11-02 12:32:24,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 678.17ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:32:24,063 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1814 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10105.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.53ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10884.74ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:24,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1814 Valid, 0 Invalid, 2779 Unknown, 0 Unchecked, 27.53ms Time], IncrementalHoareTripleChecker [49 Valid, 2729 Invalid, 1 Unknown, 0 Unchecked, 10884.74ms Time] [2021-11-02 12:32:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2021-11-02 12:32:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2059. [2021-11-02 12:32:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2039 states have (on average 1.2790583619421285) internal successors, (2608), 2058 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states 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 12:32:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2608 transitions. [2021-11-02 12:32:24,114 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2608 transitions. Word has length 64 [2021-11-02 12:32:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:24,114 INFO L470 AbstractCegarLoop]: Abstraction has 2059 states and 2608 transitions. [2021-11-02 12:32:24,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2608 transitions. [2021-11-02 12:32:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 12:32:24,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:24,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:32:24,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:32:24,116 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:32:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash 102145664, now seen corresponding path program 1 times [2021-11-02 12:32:24,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:24,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333344044] [2021-11-02 12:32:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:24,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:24,647 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 12:32:24,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:24,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333344044] [2021-11-02 12:32:24,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333344044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:24,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:24,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:32:24,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508987050] [2021-11-02 12:32:24,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:32:24,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:32:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:32:24,648 INFO L87 Difference]: Start difference. First operand 2059 states and 2608 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:26,697 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 12:32:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:37,764 INFO L93 Difference]: Finished difference Result 4316 states and 5414 transitions. [2021-11-02 12:32:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:32:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 12:32:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:37,770 INFO L225 Difference]: With dead ends: 4316 [2021-11-02 12:32:37,770 INFO L226 Difference]: Without dead ends: 2401 [2021-11-02 12:32:37,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 276.74ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:32:37,773 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 165 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12023.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.70ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12821.04ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:37,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 0 Invalid, 3494 Unknown, 0 Unchecked, 23.70ms Time], IncrementalHoareTripleChecker [40 Valid, 3453 Invalid, 1 Unknown, 0 Unchecked, 12821.04ms Time] [2021-11-02 12:32:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-02 12:32:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2059. [2021-11-02 12:32:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2039 states have (on average 1.274153997057381) internal successors, (2598), 2058 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states 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 12:32:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2598 transitions. [2021-11-02 12:32:37,824 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2598 transitions. Word has length 65 [2021-11-02 12:32:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:37,824 INFO L470 AbstractCegarLoop]: Abstraction has 2059 states and 2598 transitions. [2021-11-02 12:32:37,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:32:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2598 transitions. [2021-11-02 12:32:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:32:37,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:37,826 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] [2021-11-02 12:32:37,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:32:37,826 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:32:37,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash -116822098, now seen corresponding path program 1 times [2021-11-02 12:32:37,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:37,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398493426] [2021-11-02 12:32:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:37,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:38,043 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 12:32:38,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:38,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398493426] [2021-11-02 12:32:38,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398493426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:38,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:38,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:32:38,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326344026] [2021-11-02 12:32:38,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:32:38,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:32:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:32:38,044 INFO L87 Difference]: Start difference. First operand 2059 states and 2598 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:32:40,105 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 12:32:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:32:46,528 INFO L93 Difference]: Finished difference Result 5159 states and 6477 transitions. [2021-11-02 12:32:46,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:32:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-02 12:32:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:32:46,537 INFO L225 Difference]: With dead ends: 5159 [2021-11-02 12:32:46,537 INFO L226 Difference]: Without dead ends: 3123 [2021-11-02 12:32:46,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 124.66ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:32:46,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1039 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7555.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.05ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8216.10ms IncrementalHoareTripleChecker+Time [2021-11-02 12:32:46,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 0 Invalid, 1835 Unknown, 0 Unchecked, 16.05ms Time], IncrementalHoareTripleChecker [38 Valid, 1796 Invalid, 1 Unknown, 0 Unchecked, 8216.10ms Time] [2021-11-02 12:32:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2021-11-02 12:32:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 1785. [2021-11-02 12:32:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1765 states have (on average 1.2577903682719547) internal successors, (2220), 1784 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 12:32:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2220 transitions. [2021-11-02 12:32:46,669 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2220 transitions. Word has length 66 [2021-11-02 12:32:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:32:46,669 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 2220 transitions. [2021-11-02 12:32:46,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:32:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2220 transitions. [2021-11-02 12:32:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:32:46,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:32:46,670 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] [2021-11-02 12:32:46,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:32:46,671 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:32:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:32:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1269381296, now seen corresponding path program 1 times [2021-11-02 12:32:46,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:32:46,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964043649] [2021-11-02 12:32:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:32:46,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:32:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:32:47,870 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 12:32:47,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:32:47,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964043649] [2021-11-02 12:32:47,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964043649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:32:47,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:32:47,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:32:47,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563112860] [2021-11-02 12:32:47,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:32:47,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:32:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:32:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:32:47,871 INFO L87 Difference]: Start difference. First operand 1785 states and 2220 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:32:49,918 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 12:33:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:33:27,889 INFO L93 Difference]: Finished difference Result 4897 states and 6026 transitions. [2021-11-02 12:33:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 12:33:27,890 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-02 12:33:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:33:27,900 INFO L225 Difference]: With dead ends: 4897 [2021-11-02 12:33:27,900 INFO L226 Difference]: Without dead ends: 4339 [2021-11-02 12:33:27,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 6430.60ms TimeCoverageRelationStatistics Valid=668, Invalid=2088, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 12:33:27,902 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7925 mSDsluCounter, 6658 mSDsCounter, 0 mSdLazyCounter, 9828 mSolverCounterSat, 163 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31880.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7925 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 116.75ms SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 9828 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33694.10ms IncrementalHoareTripleChecker+Time [2021-11-02 12:33:27,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7925 Valid, 0 Invalid, 9992 Unknown, 0 Unchecked, 116.75ms Time], IncrementalHoareTripleChecker [163 Valid, 9828 Invalid, 1 Unknown, 0 Unchecked, 33694.10ms Time] [2021-11-02 12:33:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-11-02 12:33:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 2243. [2021-11-02 12:33:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2223 states have (on average 1.2582096266306793) internal successors, (2797), 2242 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states 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 12:33:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2797 transitions. [2021-11-02 12:33:28,008 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2797 transitions. Word has length 66 [2021-11-02 12:33:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:33:28,008 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 2797 transitions. [2021-11-02 12:33:28,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:33:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2797 transitions. [2021-11-02 12:33:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:33:28,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:33:28,009 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] [2021-11-02 12:33:28,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:33:28,010 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:33:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:33:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1934161900, now seen corresponding path program 1 times [2021-11-02 12:33:28,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:33:28,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165569789] [2021-11-02 12:33:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:33:28,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:33:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:33:29,108 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 12:33:29,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:33:29,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165569789] [2021-11-02 12:33:29,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165569789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:33:29,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:33:29,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:33:29,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531852910] [2021-11-02 12:33:29,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:33:29,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:33:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:33:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:33:29,111 INFO L87 Difference]: Start difference. First operand 2243 states and 2797 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:33:31,164 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 12:34:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:09,328 INFO L93 Difference]: Finished difference Result 4441 states and 5452 transitions. [2021-11-02 12:34:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 12:34:09,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-02 12:34:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:09,338 INFO L225 Difference]: With dead ends: 4441 [2021-11-02 12:34:09,338 INFO L226 Difference]: Without dead ends: 4361 [2021-11-02 12:34:09,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 5670.54ms TimeCoverageRelationStatistics Valid=613, Invalid=1937, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 12:34:09,340 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4688 mSDsluCounter, 7186 mSDsCounter, 0 mSdLazyCounter, 10384 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32676.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.83ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 10384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34531.13ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:09,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4688 Valid, 0 Invalid, 10481 Unknown, 0 Unchecked, 108.83ms Time], IncrementalHoareTripleChecker [96 Valid, 10384 Invalid, 1 Unknown, 0 Unchecked, 34531.13ms Time] [2021-11-02 12:34:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-11-02 12:34:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 2036. [2021-11-02 12:34:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2016 states have (on average 1.255952380952381) internal successors, (2532), 2035 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states 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 12:34:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2532 transitions. [2021-11-02 12:34:09,408 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2532 transitions. Word has length 66 [2021-11-02 12:34:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:09,409 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 2532 transitions. [2021-11-02 12:34:09,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:34:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2532 transitions. [2021-11-02 12:34:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:34:09,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:09,410 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 12:34:09,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:34:09,411 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:34:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1757789070, now seen corresponding path program 1 times [2021-11-02 12:34:09,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:09,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663120530] [2021-11-02 12:34:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:09,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:09,772 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 12:34:09,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:09,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663120530] [2021-11-02 12:34:09,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663120530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:09,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:09,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:34:09,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431327902] [2021-11-02 12:34:09,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:34:09,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:34:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:34:09,774 INFO L87 Difference]: Start difference. First operand 2036 states and 2532 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 12:34:11,851 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 12:34:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:20,272 INFO L93 Difference]: Finished difference Result 2950 states and 3647 transitions. [2021-11-02 12:34:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:34:20,273 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 12:34:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:20,286 INFO L225 Difference]: With dead ends: 2950 [2021-11-02 12:34:20,287 INFO L226 Difference]: Without dead ends: 2940 [2021-11-02 12:34:20,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 191.77ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:34:20,291 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 529 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9447.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.47ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10234.38ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:20,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 0 Invalid, 2420 Unknown, 0 Unchecked, 18.47ms Time], IncrementalHoareTripleChecker [40 Valid, 2379 Invalid, 1 Unknown, 0 Unchecked, 10234.38ms Time] [2021-11-02 12:34:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2021-11-02 12:34:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2148. [2021-11-02 12:34:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2128 states have (on average 1.2424812030075187) internal successors, (2644), 2147 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states 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 12:34:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 2644 transitions. [2021-11-02 12:34:20,374 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 2644 transitions. Word has length 67 [2021-11-02 12:34:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:20,374 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 2644 transitions. [2021-11-02 12:34:20,375 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 12:34:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 2644 transitions. [2021-11-02 12:34:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:34:20,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:20,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:34:20,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:34:20,396 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:34:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1585875594, now seen corresponding path program 1 times [2021-11-02 12:34:20,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:20,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876235287] [2021-11-02 12:34:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:20,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:20,614 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 12:34:20,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:20,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876235287] [2021-11-02 12:34:20,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876235287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:20,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:20,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:34:20,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620402322] [2021-11-02 12:34:20,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:34:20,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:34:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:34:20,616 INFO L87 Difference]: Start difference. First operand 2148 states and 2644 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:22,669 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 12:34:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:30,707 INFO L93 Difference]: Finished difference Result 4947 states and 6055 transitions. [2021-11-02 12:34:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:34:30,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 12:34:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:30,712 INFO L225 Difference]: With dead ends: 4947 [2021-11-02 12:34:30,712 INFO L226 Difference]: Without dead ends: 3002 [2021-11-02 12:34:30,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.38ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:34:30,715 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9148.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.72ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9851.33ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:30,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 2474 Unknown, 0 Unchecked, 33.72ms Time], IncrementalHoareTripleChecker [31 Valid, 2442 Invalid, 1 Unknown, 0 Unchecked, 9851.33ms Time] [2021-11-02 12:34:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-11-02 12:34:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2148. [2021-11-02 12:34:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2128 states have (on average 1.226033834586466) internal successors, (2609), 2147 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states 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 12:34:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 2609 transitions. [2021-11-02 12:34:30,780 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 2609 transitions. Word has length 69 [2021-11-02 12:34:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:30,780 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 2609 transitions. [2021-11-02 12:34:30,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 2609 transitions. [2021-11-02 12:34:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:34:30,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:30,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:34:30,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:34:30,782 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:34:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash 316216050, now seen corresponding path program 1 times [2021-11-02 12:34:30,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:30,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219694254] [2021-11-02 12:34:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:30,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:32,808 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 12:34:32,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:32,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219694254] [2021-11-02 12:34:32,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219694254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:32,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:32,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:34:32,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826991648] [2021-11-02 12:34:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:34:32,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:34:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:34:32,810 INFO L87 Difference]: Start difference. First operand 2148 states and 2609 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:34,852 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 12:34:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:43,059 INFO L93 Difference]: Finished difference Result 3960 states and 4810 transitions. [2021-11-02 12:34:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:34:43,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 12:34:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:43,064 INFO L225 Difference]: With dead ends: 3960 [2021-11-02 12:34:43,064 INFO L226 Difference]: Without dead ends: 2379 [2021-11-02 12:34:43,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 629.33ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:34:43,066 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1203 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8939.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.19ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9609.21ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:43,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 0 Invalid, 2507 Unknown, 0 Unchecked, 25.19ms Time], IncrementalHoareTripleChecker [24 Valid, 2482 Invalid, 1 Unknown, 0 Unchecked, 9609.21ms Time] [2021-11-02 12:34:43,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2021-11-02 12:34:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2148. [2021-11-02 12:34:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2128 states have (on average 1.2255639097744362) internal successors, (2608), 2147 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states 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 12:34:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 2608 transitions. [2021-11-02 12:34:43,129 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 2608 transitions. Word has length 69 [2021-11-02 12:34:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:43,129 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 2608 transitions. [2021-11-02 12:34:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:34:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 2608 transitions. [2021-11-02 12:34:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 12:34:43,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:43,131 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] [2021-11-02 12:34:43,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:34:43,131 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:34:43,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash -535212444, now seen corresponding path program 1 times [2021-11-02 12:34:43,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:43,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546335641] [2021-11-02 12:34:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:43,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:43,595 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 12:34:43,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:43,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546335641] [2021-11-02 12:34:43,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546335641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:43,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:43,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:34:43,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097904493] [2021-11-02 12:34:43,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:34:43,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:43,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:34:43,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:34:43,597 INFO L87 Difference]: Start difference. First operand 2148 states and 2608 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 12:34:45,645 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 12:34:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:34:56,960 INFO L93 Difference]: Finished difference Result 4029 states and 4860 transitions. [2021-11-02 12:34:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:34:56,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-02 12:34:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:34:56,963 INFO L225 Difference]: With dead ends: 4029 [2021-11-02 12:34:56,963 INFO L226 Difference]: Without dead ends: 1881 [2021-11-02 12:34:56,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 272.34ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:34:56,965 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 230 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12228.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.04ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13035.19ms IncrementalHoareTripleChecker+Time [2021-11-02 12:34:56,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 0 Invalid, 3697 Unknown, 0 Unchecked, 24.04ms Time], IncrementalHoareTripleChecker [40 Valid, 3656 Invalid, 1 Unknown, 0 Unchecked, 13035.19ms Time] [2021-11-02 12:34:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2021-11-02 12:34:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1430. [2021-11-02 12:34:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1410 states have (on average 1.221985815602837) internal successors, (1723), 1429 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states 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 12:34:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1723 transitions. [2021-11-02 12:34:57,006 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1723 transitions. Word has length 70 [2021-11-02 12:34:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:34:57,006 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 1723 transitions. [2021-11-02 12:34:57,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 12:34:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1723 transitions. [2021-11-02 12:34:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:34:57,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:34:57,007 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] [2021-11-02 12:34:57,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:34:57,007 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:34:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:34:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1704685286, now seen corresponding path program 1 times [2021-11-02 12:34:57,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:34:57,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713697361] [2021-11-02 12:34:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:34:57,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:34:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:34:57,195 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 12:34:57,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:34:57,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713697361] [2021-11-02 12:34:57,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713697361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:34:57,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:34:57,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:34:57,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865955914] [2021-11-02 12:34:57,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:34:57,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:34:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:34:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:34:57,197 INFO L87 Difference]: Start difference. First operand 1430 states and 1723 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:34:59,247 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 12:35:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:35:04,003 INFO L93 Difference]: Finished difference Result 2952 states and 3546 transitions. [2021-11-02 12:35:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:35:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-02 12:35:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:35:04,006 INFO L225 Difference]: With dead ends: 2952 [2021-11-02 12:35:04,006 INFO L226 Difference]: Without dead ends: 1523 [2021-11-02 12:35:04,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:35:04,009 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6148.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6678.26ms IncrementalHoareTripleChecker+Time [2021-11-02 12:35:04,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 1503 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [23 Valid, 1479 Invalid, 1 Unknown, 0 Unchecked, 6678.26ms Time] [2021-11-02 12:35:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-02 12:35:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1409. [2021-11-02 12:35:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1389 states have (on average 1.2138228941684666) internal successors, (1686), 1408 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 12:35:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1686 transitions. [2021-11-02 12:35:04,051 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1686 transitions. Word has length 74 [2021-11-02 12:35:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:35:04,051 INFO L470 AbstractCegarLoop]: Abstraction has 1409 states and 1686 transitions. [2021-11-02 12:35:04,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:35:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1686 transitions. [2021-11-02 12:35:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:35:04,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:35:04,052 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] [2021-11-02 12:35:04,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:35:04,052 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:35:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:35:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1494315350, now seen corresponding path program 1 times [2021-11-02 12:35:04,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:35:04,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166250834] [2021-11-02 12:35:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:35:04,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:35:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:35:04,407 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 12:35:04,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:35:04,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166250834] [2021-11-02 12:35:04,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166250834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:35:04,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:35:04,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:35:04,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909423611] [2021-11-02 12:35:04,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:35:04,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:35:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:35:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:35:04,408 INFO L87 Difference]: Start difference. First operand 1409 states and 1686 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:35:06,454 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 12:35:14,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:35:14,570 INFO L93 Difference]: Finished difference Result 2238 states and 2653 transitions. [2021-11-02 12:35:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:35:14,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-02 12:35:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:35:14,574 INFO L225 Difference]: With dead ends: 2238 [2021-11-02 12:35:14,574 INFO L226 Difference]: Without dead ends: 2120 [2021-11-02 12:35:14,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 229.98ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:35:14,576 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1064 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9174.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.25ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9851.32ms IncrementalHoareTripleChecker+Time [2021-11-02 12:35:14,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 0 Invalid, 2533 Unknown, 0 Unchecked, 22.25ms Time], IncrementalHoareTripleChecker [17 Valid, 2515 Invalid, 1 Unknown, 0 Unchecked, 9851.32ms Time] [2021-11-02 12:35:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-11-02 12:35:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1833. [2021-11-02 12:35:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1813 states have (on average 1.214561500275786) internal successors, (2202), 1832 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states 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 12:35:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2202 transitions. [2021-11-02 12:35:14,633 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2202 transitions. Word has length 74 [2021-11-02 12:35:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:35:14,633 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 2202 transitions. [2021-11-02 12:35:14,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:35:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2202 transitions. [2021-11-02 12:35:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:35:14,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:35:14,634 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] [2021-11-02 12:35:14,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:35:14,635 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:35:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:35:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash 984842260, now seen corresponding path program 1 times [2021-11-02 12:35:14,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:35:14,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847560396] [2021-11-02 12:35:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:35:14,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:35:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:35:15,572 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 12:35:15,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:35:15,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847560396] [2021-11-02 12:35:15,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847560396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:35:15,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:35:15,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:35:15,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175324737] [2021-11-02 12:35:15,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:35:15,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:35:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:35:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:35:15,574 INFO L87 Difference]: Start difference. First operand 1833 states and 2202 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:35:17,620 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 12:35:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:35:44,763 INFO L93 Difference]: Finished difference Result 4364 states and 5136 transitions. [2021-11-02 12:35:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 12:35:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-02 12:35:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:35:44,770 INFO L225 Difference]: With dead ends: 4364 [2021-11-02 12:35:44,770 INFO L226 Difference]: Without dead ends: 3772 [2021-11-02 12:35:44,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3369.45ms TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 12:35:44,784 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5842 mSDsluCounter, 5318 mSDsCounter, 0 mSdLazyCounter, 7555 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24319.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5842 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.32ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 7555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25827.38ms IncrementalHoareTripleChecker+Time [2021-11-02 12:35:44,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5842 Valid, 0 Invalid, 7651 Unknown, 0 Unchecked, 90.32ms Time], IncrementalHoareTripleChecker [95 Valid, 7555 Invalid, 1 Unknown, 0 Unchecked, 25827.38ms Time] [2021-11-02 12:35:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2021-11-02 12:35:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 2112. [2021-11-02 12:35:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2092 states have (on average 1.2136711281070747) internal successors, (2539), 2111 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states 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 12:35:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2539 transitions. [2021-11-02 12:35:44,935 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2539 transitions. Word has length 74 [2021-11-02 12:35:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:35:44,935 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2539 transitions. [2021-11-02 12:35:44,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:35:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2539 transitions. [2021-11-02 12:35:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:35:44,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:35:44,936 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] [2021-11-02 12:35:44,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:35:44,938 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:35:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:35:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1025517010, now seen corresponding path program 1 times [2021-11-02 12:35:44,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:35:44,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104143279] [2021-11-02 12:35:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:35:44,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:35:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:35:51,971 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 12:35:51,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:35:51,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104143279] [2021-11-02 12:35:51,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104143279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:35:51,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:35:51,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:35:51,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539544983] [2021-11-02 12:35:51,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:35:51,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:35:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:35:51,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:35:51,973 INFO L87 Difference]: Start difference. First operand 2112 states and 2539 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:35:54,033 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 12:36:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:33,306 INFO L93 Difference]: Finished difference Result 2606 states and 3051 transitions. [2021-11-02 12:36:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 12:36:33,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-02 12:36:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:33,310 INFO L225 Difference]: With dead ends: 2606 [2021-11-02 12:36:33,310 INFO L226 Difference]: Without dead ends: 2604 [2021-11-02 12:36:33,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 8205.42ms TimeCoverageRelationStatistics Valid=578, Invalid=1492, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 12:36:33,312 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3019 mSDsluCounter, 6462 mSDsCounter, 0 mSdLazyCounter, 9630 mSolverCounterSat, 84 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31789.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 114.06ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 9630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33695.97ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:33,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 0 Invalid, 9715 Unknown, 0 Unchecked, 114.06ms Time], IncrementalHoareTripleChecker [84 Valid, 9630 Invalid, 1 Unknown, 0 Unchecked, 33695.97ms Time] [2021-11-02 12:36:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-11-02 12:36:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2112. [2021-11-02 12:36:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2092 states have (on average 1.2131931166347993) internal successors, (2538), 2111 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states 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 12:36:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2538 transitions. [2021-11-02 12:36:33,390 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2538 transitions. Word has length 74 [2021-11-02 12:36:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:33,390 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2538 transitions. [2021-11-02 12:36:33,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:36:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2538 transitions. [2021-11-02 12:36:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:36:33,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:33,391 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 12:36:33,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 12:36:33,391 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:36:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash 44168579, now seen corresponding path program 1 times [2021-11-02 12:36:33,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:33,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881982162] [2021-11-02 12:36:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:33,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:36,782 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 12:36:36,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:36,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881982162] [2021-11-02 12:36:36,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881982162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:36,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:36,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:36:36,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073667581] [2021-11-02 12:36:36,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:36:36,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:36:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:36:36,783 INFO L87 Difference]: Start difference. First operand 2112 states and 2538 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 12:36:38,842 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 12:37:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:11,259 INFO L93 Difference]: Finished difference Result 2920 states and 3434 transitions. [2021-11-02 12:37:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 12:37:11,260 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 12:37:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:11,264 INFO L225 Difference]: With dead ends: 2920 [2021-11-02 12:37:11,264 INFO L226 Difference]: Without dead ends: 2248 [2021-11-02 12:37:11,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 5739.61ms TimeCoverageRelationStatistics Valid=534, Invalid=1446, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 12:37:11,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4649 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 8822 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27861.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 96.71ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 8822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29494.27ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:11,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4649 Valid, 0 Invalid, 8909 Unknown, 0 Unchecked, 96.71ms Time], IncrementalHoareTripleChecker [86 Valid, 8822 Invalid, 1 Unknown, 0 Unchecked, 29494.27ms Time] [2021-11-02 12:37:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-02 12:37:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1883. [2021-11-02 12:37:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1863 states have (on average 1.2120236178207193) internal successors, (2258), 1882 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states 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 12:37:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2258 transitions. [2021-11-02 12:37:11,406 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2258 transitions. Word has length 75 [2021-11-02 12:37:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:11,406 INFO L470 AbstractCegarLoop]: Abstraction has 1883 states and 2258 transitions. [2021-11-02 12:37:11,406 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 12:37:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2258 transitions. [2021-11-02 12:37:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 12:37:11,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:11,407 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 12:37:11,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:37:11,408 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:37:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1954503875, now seen corresponding path program 1 times [2021-11-02 12:37:11,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:11,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824375104] [2021-11-02 12:37:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:11,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:13,845 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 12:37:13,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:13,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824375104] [2021-11-02 12:37:13,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824375104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:13,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:13,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:37:13,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409392971] [2021-11-02 12:37:13,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:37:13,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:37:13,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:37:13,846 INFO L87 Difference]: Start difference. First operand 1883 states and 2258 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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 12:37:15,891 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 12:37:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:31,976 INFO L93 Difference]: Finished difference Result 2681 states and 3163 transitions. [2021-11-02 12:37:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:37:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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 12:37:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:31,979 INFO L225 Difference]: With dead ends: 2681 [2021-11-02 12:37:31,979 INFO L226 Difference]: Without dead ends: 1867 [2021-11-02 12:37:31,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1454.94ms TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:37:31,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3330 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15848.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.73ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16935.87ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:31,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3330 Valid, 0 Invalid, 4874 Unknown, 0 Unchecked, 50.73ms Time], IncrementalHoareTripleChecker [105 Valid, 4768 Invalid, 1 Unknown, 0 Unchecked, 16935.87ms Time] [2021-11-02 12:37:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-02 12:37:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1441. [2021-11-02 12:37:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1421 states have (on average 1.2076002814919071) internal successors, (1716), 1440 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states 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 12:37:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1716 transitions. [2021-11-02 12:37:32,029 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1716 transitions. Word has length 77 [2021-11-02 12:37:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:32,030 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1716 transitions. [2021-11-02 12:37:32,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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 12:37:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1716 transitions. [2021-11-02 12:37:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:37:32,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:32,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:37:32,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 12:37:32,031 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:37:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1869038356, now seen corresponding path program 1 times [2021-11-02 12:37:32,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:32,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099954166] [2021-11-02 12:37:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:32,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:34,082 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 12:37:34,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:34,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099954166] [2021-11-02 12:37:34,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099954166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:34,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:34,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:37:34,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54580878] [2021-11-02 12:37:34,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:37:34,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:34,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:37:34,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:37:34,083 INFO L87 Difference]: Start difference. First operand 1441 states and 1716 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:36,133 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 12:37:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:49,158 INFO L93 Difference]: Finished difference Result 2939 states and 3490 transitions. [2021-11-02 12:37:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:37:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 12:37:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:49,162 INFO L225 Difference]: With dead ends: 2939 [2021-11-02 12:37:49,162 INFO L226 Difference]: Without dead ends: 2030 [2021-11-02 12:37:49,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 525.02ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:37:49,163 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1000 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13646.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.44ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14557.16ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:49,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 0 Invalid, 4027 Unknown, 0 Unchecked, 36.44ms Time], IncrementalHoareTripleChecker [9 Valid, 4017 Invalid, 1 Unknown, 0 Unchecked, 14557.16ms Time] [2021-11-02 12:37:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-11-02 12:37:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1950. [2021-11-02 12:37:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1930 states have (on average 1.2077720207253886) internal successors, (2331), 1949 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states 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 12:37:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2331 transitions. [2021-11-02 12:37:49,226 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2331 transitions. Word has length 81 [2021-11-02 12:37:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:49,226 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 2331 transitions. [2021-11-02 12:37:49,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2331 transitions. [2021-11-02 12:37:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:37:49,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:49,261 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 12:37:49,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 12:37:49,261 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:37:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1314431118, now seen corresponding path program 1 times [2021-11-02 12:37:49,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:49,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379495137] [2021-11-02 12:37:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:49,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:51,827 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 12:37:51,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:51,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379495137] [2021-11-02 12:37:51,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379495137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:51,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:51,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:37:51,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884938378] [2021-11-02 12:37:51,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:37:51,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:37:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:37:51,829 INFO L87 Difference]: Start difference. First operand 1950 states and 2331 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 12:37:53,888 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 12:38:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:04,248 INFO L93 Difference]: Finished difference Result 4090 states and 4876 transitions. [2021-11-02 12:38:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:38:04,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 12:38:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:04,254 INFO L225 Difference]: With dead ends: 4090 [2021-11-02 12:38:04,254 INFO L226 Difference]: Without dead ends: 2425 [2021-11-02 12:38:04,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1160.17ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:38:04,256 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1112 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10722.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.06ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11518.94ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:04,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 0 Invalid, 2886 Unknown, 0 Unchecked, 27.06ms Time], IncrementalHoareTripleChecker [12 Valid, 2873 Invalid, 1 Unknown, 0 Unchecked, 11518.94ms Time] [2021-11-02 12:38:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-02 12:38:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2218. [2021-11-02 12:38:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2198 states have (on average 1.1910828025477707) internal successors, (2618), 2217 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states 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 12:38:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 2618 transitions. [2021-11-02 12:38:04,330 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 2618 transitions. Word has length 83 [2021-11-02 12:38:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:04,331 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 2618 transitions. [2021-11-02 12:38:04,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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 12:38:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 2618 transitions. [2021-11-02 12:38:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:38:04,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:04,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:38:04,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 12:38:04,332 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:38:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1154252017, now seen corresponding path program 1 times [2021-11-02 12:38:04,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:04,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787836578] [2021-11-02 12:38:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:04,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:07,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:07,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787836578] [2021-11-02 12:38:07,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787836578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:07,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:07,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:38:07,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578667493] [2021-11-02 12:38:07,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:38:07,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:38:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:38:07,544 INFO L87 Difference]: Start difference. First operand 2218 states and 2618 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:09,592 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 12:38:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:18,698 INFO L93 Difference]: Finished difference Result 3122 states and 3666 transitions. [2021-11-02 12:38:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:38:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:38:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:18,701 INFO L225 Difference]: With dead ends: 3122 [2021-11-02 12:38:18,701 INFO L226 Difference]: Without dead ends: 2248 [2021-11-02 12:38:18,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 849.74ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:38:18,703 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2680 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9865.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.29ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10496.03ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:18,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2680 Valid, 0 Invalid, 2658 Unknown, 0 Unchecked, 29.29ms Time], IncrementalHoareTripleChecker [82 Valid, 2575 Invalid, 1 Unknown, 0 Unchecked, 10496.03ms Time] [2021-11-02 12:38:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-02 12:38:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2012. [2021-11-02 12:38:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1992 states have (on average 1.1822289156626506) internal successors, (2355), 2011 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states 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 12:38:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2355 transitions. [2021-11-02 12:38:18,779 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2355 transitions. Word has length 84 [2021-11-02 12:38:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:18,779 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 2355 transitions. [2021-11-02 12:38:18,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2355 transitions. [2021-11-02 12:38:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:38:18,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:18,781 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, 1, 1, 1, 1, 1, 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 12:38:18,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 12:38:18,781 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:38:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:18,782 INFO L85 PathProgramCache]: Analyzing trace with hash -278758165, now seen corresponding path program 1 times [2021-11-02 12:38:18,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:18,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525462394] [2021-11-02 12:38:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:18,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:19,880 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 12:38:19,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:19,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525462394] [2021-11-02 12:38:19,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525462394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:19,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:19,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:38:19,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751724290] [2021-11-02 12:38:19,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:38:19,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:19,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:38:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:38:19,882 INFO L87 Difference]: Start difference. First operand 2012 states and 2355 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:21,948 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 12:38:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:47,531 INFO L93 Difference]: Finished difference Result 3104 states and 3585 transitions. [2021-11-02 12:38:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 12:38:47,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:38:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:47,533 INFO L225 Difference]: With dead ends: 3104 [2021-11-02 12:38:47,533 INFO L226 Difference]: Without dead ends: 2816 [2021-11-02 12:38:47,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2237.23ms TimeCoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 12:38:47,535 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3665 mSDsluCounter, 5671 mSDsCounter, 0 mSdLazyCounter, 8192 mSolverCounterSat, 134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24194.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.12ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 8192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25635.99ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:47,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3665 Valid, 0 Invalid, 8327 Unknown, 0 Unchecked, 77.12ms Time], IncrementalHoareTripleChecker [134 Valid, 8192 Invalid, 1 Unknown, 0 Unchecked, 25635.99ms Time] [2021-11-02 12:38:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-02 12:38:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2023. [2021-11-02 12:38:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2003 states have (on average 1.17873190214678) internal successors, (2361), 2022 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states 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 12:38:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2361 transitions. [2021-11-02 12:38:47,608 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2361 transitions. Word has length 84 [2021-11-02 12:38:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:47,609 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2361 transitions. [2021-11-02 12:38:47,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2361 transitions. [2021-11-02 12:38:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:38:47,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:47,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:38:47,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 12:38:47,610 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:38:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 401300205, now seen corresponding path program 1 times [2021-11-02 12:38:47,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:47,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091856909] [2021-11-02 12:38:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:47,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:52,072 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 12:38:52,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:52,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091856909] [2021-11-02 12:38:52,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091856909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:52,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:52,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:38:52,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913875315] [2021-11-02 12:38:52,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:38:52,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:38:52,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:38:52,074 INFO L87 Difference]: Start difference. First operand 2023 states and 2361 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:54,128 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 12:39:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:02,804 INFO L93 Difference]: Finished difference Result 2862 states and 3342 transitions. [2021-11-02 12:39:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:39:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:39:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:02,807 INFO L225 Difference]: With dead ends: 2862 [2021-11-02 12:39:02,807 INFO L226 Difference]: Without dead ends: 2208 [2021-11-02 12:39:02,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 593.28ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:39:02,808 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2781 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9496.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2781 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.13ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10204.49ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:02,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2781 Valid, 0 Invalid, 2789 Unknown, 0 Unchecked, 30.13ms Time], IncrementalHoareTripleChecker [86 Valid, 2702 Invalid, 1 Unknown, 0 Unchecked, 10204.49ms Time] [2021-11-02 12:39:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-11-02 12:39:02,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1990. [2021-11-02 12:39:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1970 states have (on average 1.1715736040609137) internal successors, (2308), 1989 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states 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 12:39:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2308 transitions. [2021-11-02 12:39:02,903 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2308 transitions. Word has length 84 [2021-11-02 12:39:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:02,903 INFO L470 AbstractCegarLoop]: Abstraction has 1990 states and 2308 transitions. [2021-11-02 12:39:02,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2308 transitions. [2021-11-02 12:39:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 12:39:02,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:02,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:39:02,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 12:39:02,905 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:39:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1305406481, now seen corresponding path program 1 times [2021-11-02 12:39:02,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:02,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528693845] [2021-11-02 12:39:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:02,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:08,410 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 12:39:08,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:08,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528693845] [2021-11-02 12:39:08,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528693845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:08,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:08,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:39:08,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460736864] [2021-11-02 12:39:08,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:39:08,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:39:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:39:08,412 INFO L87 Difference]: Start difference. First operand 1990 states and 2308 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:10,475 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 12:39:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:44,111 INFO L93 Difference]: Finished difference Result 2452 states and 2810 transitions. [2021-11-02 12:39:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 12:39:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 12:39:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:44,113 INFO L225 Difference]: With dead ends: 2452 [2021-11-02 12:39:44,113 INFO L226 Difference]: Without dead ends: 2340 [2021-11-02 12:39:44,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 7222.39ms TimeCoverageRelationStatistics Valid=715, Invalid=2147, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 12:39:44,114 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3097 mSDsluCounter, 6314 mSDsCounter, 0 mSdLazyCounter, 9367 mSolverCounterSat, 128 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27406.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.26ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 9367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28942.33ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:44,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3097 Valid, 0 Invalid, 9496 Unknown, 0 Unchecked, 99.26ms Time], IncrementalHoareTripleChecker [128 Valid, 9367 Invalid, 1 Unknown, 0 Unchecked, 28942.33ms Time] [2021-11-02 12:39:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-11-02 12:39:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1981. [2021-11-02 12:39:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1961 states have (on average 1.1723610402855686) internal successors, (2299), 1980 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states 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 12:39:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2299 transitions. [2021-11-02 12:39:44,183 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2299 transitions. Word has length 84 [2021-11-02 12:39:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:44,183 INFO L470 AbstractCegarLoop]: Abstraction has 1981 states and 2299 transitions. [2021-11-02 12:39:44,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2299 transitions. [2021-11-02 12:39:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:39:44,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:44,185 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 12:39:44,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 12:39:44,185 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:39:44,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:44,186 INFO L85 PathProgramCache]: Analyzing trace with hash 325168929, now seen corresponding path program 1 times [2021-11-02 12:39:44,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:44,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848040010] [2021-11-02 12:39:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:44,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:49,066 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 12:39:49,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:49,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848040010] [2021-11-02 12:39:49,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848040010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:49,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:49,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:39:49,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995521318] [2021-11-02 12:39:49,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:39:49,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:39:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:39:49,067 INFO L87 Difference]: Start difference. First operand 1981 states and 2299 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:51,124 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 12:40:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:28,801 INFO L93 Difference]: Finished difference Result 3889 states and 4510 transitions. [2021-11-02 12:40:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 12:40:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:40:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:28,805 INFO L225 Difference]: With dead ends: 3889 [2021-11-02 12:40:28,805 INFO L226 Difference]: Without dead ends: 3887 [2021-11-02 12:40:28,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2328.72ms TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2021-11-02 12:40:28,806 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2893 mSDsluCounter, 8590 mSDsCounter, 0 mSdLazyCounter, 12310 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35388.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 111.82ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 12310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37369.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:28,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 0 Invalid, 12370 Unknown, 0 Unchecked, 111.82ms Time], IncrementalHoareTripleChecker [59 Valid, 12310 Invalid, 1 Unknown, 0 Unchecked, 37369.18ms Time] [2021-11-02 12:40:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2021-11-02 12:40:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 1979. [2021-11-02 12:40:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1960 states have (on average 1.171938775510204) internal successors, (2297), 1978 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states 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 12:40:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2297 transitions. [2021-11-02 12:40:28,909 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2297 transitions. Word has length 85 [2021-11-02 12:40:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:28,909 INFO L470 AbstractCegarLoop]: Abstraction has 1979 states and 2297 transitions. [2021-11-02 12:40:28,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2297 transitions. [2021-11-02 12:40:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:40:28,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:28,911 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 12:40:28,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 12:40:28,911 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:40:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash -481508826, now seen corresponding path program 1 times [2021-11-02 12:40:28,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:28,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534009328] [2021-11-02 12:40:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:28,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:29,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:29,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534009328] [2021-11-02 12:40:29,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534009328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:29,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:29,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:40:29,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807296514] [2021-11-02 12:40:29,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:40:29,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:40:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:40:29,223 INFO L87 Difference]: Start difference. First operand 1979 states and 2297 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:40:31,280 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 12:40:41,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:41,830 INFO L93 Difference]: Finished difference Result 2727 states and 3174 transitions. [2021-11-02 12:40:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:40:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:40:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:41,833 INFO L225 Difference]: With dead ends: 2727 [2021-11-02 12:40:41,833 INFO L226 Difference]: Without dead ends: 2717 [2021-11-02 12:40:41,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 293.47ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:40:41,835 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 536 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11367.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.76ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12189.06ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:41,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 0 Invalid, 3611 Unknown, 0 Unchecked, 24.76ms Time], IncrementalHoareTripleChecker [96 Valid, 3514 Invalid, 1 Unknown, 0 Unchecked, 12189.06ms Time] [2021-11-02 12:40:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2021-11-02 12:40:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2115. [2021-11-02 12:40:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 2096 states have (on average 1.1607824427480915) internal successors, (2433), 2114 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states 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 12:40:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2433 transitions. [2021-11-02 12:40:41,926 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2433 transitions. Word has length 86 [2021-11-02 12:40:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:41,926 INFO L470 AbstractCegarLoop]: Abstraction has 2115 states and 2433 transitions. [2021-11-02 12:40:41,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:40:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2433 transitions. [2021-11-02 12:40:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:40:41,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:41,927 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 12:40:41,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 12:40:41,928 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:40:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1290855452, now seen corresponding path program 1 times [2021-11-02 12:40:41,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:41,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324582748] [2021-11-02 12:40:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:41,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:44,028 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 12:40:44,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:44,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324582748] [2021-11-02 12:40:44,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324582748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:44,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:44,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:40:44,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949679905] [2021-11-02 12:40:44,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:40:44,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:40:44,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:40:44,029 INFO L87 Difference]: Start difference. First operand 2115 states and 2433 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 12:40:46,077 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 12:41:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:02,421 INFO L93 Difference]: Finished difference Result 2716 states and 3105 transitions. [2021-11-02 12:41:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 12:41:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 12:41:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:02,424 INFO L225 Difference]: With dead ends: 2716 [2021-11-02 12:41:02,424 INFO L226 Difference]: Without dead ends: 2601 [2021-11-02 12:41:02,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1097.87ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:41:02,425 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1830 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 5583 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16231.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.40ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17241.85ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:02,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 0 Invalid, 5634 Unknown, 0 Unchecked, 44.40ms Time], IncrementalHoareTripleChecker [50 Valid, 5583 Invalid, 1 Unknown, 0 Unchecked, 17241.85ms Time] [2021-11-02 12:41:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-11-02 12:41:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2127. [2021-11-02 12:41:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2108 states have (on average 1.1598671726755219) internal successors, (2445), 2126 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states 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 12:41:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2445 transitions. [2021-11-02 12:41:02,511 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2445 transitions. Word has length 86 [2021-11-02 12:41:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:02,512 INFO L470 AbstractCegarLoop]: Abstraction has 2127 states and 2445 transitions. [2021-11-02 12:41:02,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 12:41:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2445 transitions. [2021-11-02 12:41:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:41:02,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:02,513 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 12:41:02,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 12:41:02,514 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:41:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -57409048, now seen corresponding path program 1 times [2021-11-02 12:41:02,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:02,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951758597] [2021-11-02 12:41:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:02,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:08,112 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 12:41:08,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:08,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951758597] [2021-11-02 12:41:08,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951758597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:08,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:08,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 12:41:08,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49118541] [2021-11-02 12:41:08,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:41:08,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:41:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:41:08,113 INFO L87 Difference]: Start difference. First operand 2127 states and 2445 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 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 12:41:10,160 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 12:42:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:10,340 INFO L93 Difference]: Finished difference Result 3362 states and 3827 transitions. [2021-11-02 12:42:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-02 12:42:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 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 12:42:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:10,344 INFO L225 Difference]: With dead ends: 3362 [2021-11-02 12:42:10,344 INFO L226 Difference]: Without dead ends: 3354 [2021-11-02 12:42:10,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 15819.39ms TimeCoverageRelationStatistics Valid=1842, Invalid=8870, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 12:42:10,346 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5608 mSDsluCounter, 10353 mSDsCounter, 0 mSdLazyCounter, 16105 mSolverCounterSat, 435 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44518.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5608 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 158.48ms SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 16105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46737.48ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:10,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5608 Valid, 0 Invalid, 16541 Unknown, 0 Unchecked, 158.48ms Time], IncrementalHoareTripleChecker [435 Valid, 16105 Invalid, 1 Unknown, 0 Unchecked, 46737.48ms Time] [2021-11-02 12:42:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-11-02 12:42:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2122. [2021-11-02 12:42:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2103 states have (on average 1.160722776985259) internal successors, (2441), 2121 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states 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 12:42:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2441 transitions. [2021-11-02 12:42:10,464 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2441 transitions. Word has length 86 [2021-11-02 12:42:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:10,465 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 2441 transitions. [2021-11-02 12:42:10,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 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 12:42:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2441 transitions. [2021-11-02 12:42:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:42:10,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:10,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:42:10,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 12:42:10,467 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:42:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2079119660, now seen corresponding path program 1 times [2021-11-02 12:42:10,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:10,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642281239] [2021-11-02 12:42:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:10,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:10,639 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 12:42:10,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:10,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642281239] [2021-11-02 12:42:10,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642281239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:10,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:42:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957387485] [2021-11-02 12:42:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:42:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:42:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:42:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:42:10,649 INFO L87 Difference]: Start difference. First operand 2122 states and 2441 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:12,691 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 12:42:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:19,174 INFO L93 Difference]: Finished difference Result 2397 states and 2745 transitions. [2021-11-02 12:42:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:42:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:42:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:19,177 INFO L225 Difference]: With dead ends: 2397 [2021-11-02 12:42:19,177 INFO L226 Difference]: Without dead ends: 2261 [2021-11-02 12:42:19,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.15ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:42:19,180 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 625 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7666.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8272.02ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:19,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 0 Invalid, 2140 Unknown, 0 Unchecked, 13.20ms Time], IncrementalHoareTripleChecker [2 Valid, 2137 Invalid, 1 Unknown, 0 Unchecked, 8272.02ms Time] [2021-11-02 12:42:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2021-11-02 12:42:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2077. [2021-11-02 12:42:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2058 states have (on average 1.1584062196307094) internal successors, (2384), 2076 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states 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 12:42:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2384 transitions. [2021-11-02 12:42:19,274 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2384 transitions. Word has length 87 [2021-11-02 12:42:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:19,275 INFO L470 AbstractCegarLoop]: Abstraction has 2077 states and 2384 transitions. [2021-11-02 12:42:19,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2384 transitions. [2021-11-02 12:42:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:42:19,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:19,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:42:19,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 12:42:19,280 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 12:42:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1045119677, now seen corresponding path program 1 times [2021-11-02 12:42:19,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:19,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477439797] [2021-11-02 12:42:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:19,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:25,957 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 12:42:25,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:25,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477439797] [2021-11-02 12:42:25,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477439797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:25,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:25,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:42:25,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927663560] [2021-11-02 12:42:25,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:42:25,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:42:25,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:42:25,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:42:25,959 INFO L87 Difference]: Start difference. First operand 2077 states and 2384 transitions. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:28,004 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 [] Killed by 15