./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_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_init_copy_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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:39:10,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:39:10,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:39:10,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:39:10,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:39:10,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:39:10,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:39:10,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:39:10,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:39:10,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:39:10,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:39:10,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:39:10,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:39:10,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:39:10,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:39:10,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:39:10,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:39:10,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:39:10,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:39:10,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:39:10,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:39:10,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:39:10,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:39:10,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:39:10,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:39:10,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:39:10,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:39:10,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:39:10,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:39:10,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:39:10,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:39:10,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:39:10,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:39:10,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:39:10,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:39:10,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:39:10,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:39:10,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:39:10,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:39:10,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:39:10,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:39:10,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:39:10,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:39:10,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:39:10,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:39:10,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:39:10,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:39:10,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:39:10,735 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:39:10,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:39:10,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:39:10,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:39:10,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:39:10,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:39:10,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:39:10,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:39:10,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:39:10,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:39:10,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:39:10,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:39:10,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:39:10,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:39:10,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:39:10,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:39:10,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:39:10,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:39:10,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:39:10,739 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:39:10,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:39:10,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:39:10,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:39:10,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-11-02 12:39:10,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:39:10,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:39:10,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:39:10,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:39:10,997 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:39:10,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-02 12:39:11,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e63f465/c6a2bd5c51a24027a77eb59c81ef0267/FLAG23c7b9dfa [2021-11-02 12:39:11,637 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:39:11,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-02 12:39:11,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e63f465/c6a2bd5c51a24027a77eb59c81ef0267/FLAG23c7b9dfa [2021-11-02 12:39:12,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e63f465/c6a2bd5c51a24027a77eb59c81ef0267 [2021-11-02 12:39:12,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:39:12,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:39:12,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:39:12,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:39:12,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:39:12,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:12" (1/1) ... [2021-11-02 12:39:12,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744c8ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:12, skipping insertion in model container [2021-11-02 12:39:12,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:12" (1/1) ... [2021-11-02 12:39:12,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:39:12,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:39:12,361 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_init_copy_harness.i[4496,4509] [2021-11-02 12:39:12,368 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_init_copy_harness.i[4556,4569] [2021-11-02 12:39:12,394 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:39:12,401 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:39:12,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:12,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:39:13,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:39:13,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:39:13,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:39:13,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:39:13,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:39:13,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:39:13,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:39:13,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:39:13,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:39:13,363 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:39:13,457 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,457 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:39:13,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:39:13,591 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_init_copy_harness.i[4496,4509] [2021-11-02 12:39:13,592 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_init_copy_harness.i[4556,4569] [2021-11-02 12:39:13,595 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:39:13,595 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:39:13,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,659 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:39:13,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:39:13,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:39:13,712 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:39:13,712 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:39:13,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:39:13,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:39:13,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:39:13,714 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:39:13,714 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:39:13,746 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:39:13,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:13,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:39:14,035 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:39:14,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14 WrapperNode [2021-11-02 12:39:14,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:39:14,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:39:14,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:39:14,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:39:14,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:39:14,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:39:14,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:39:14,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:39:14,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:39:14,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:39:14,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:39:14,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:39:14,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (1/1) ... [2021-11-02 12:39:14,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:39:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:39:14,389 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 12:39:14,497 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 12:39:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:39:14,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:39:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:39:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:39:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:39:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:39:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:39:19,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:39:19,157 INFO L299 CfgBuilder]: Removed 135 assume(true) statements. [2021-11-02 12:39:19,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:19 BoogieIcfgContainer [2021-11-02 12:39:19,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:39:19,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:39:19,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:39:19,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:39:19,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:39:12" (1/3) ... [2021-11-02 12:39:19,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:19, skipping insertion in model container [2021-11-02 12:39:19,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:14" (2/3) ... [2021-11-02 12:39:19,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:19, skipping insertion in model container [2021-11-02 12:39:19,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:19" (3/3) ... [2021-11-02 12:39:19,169 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2021-11-02 12:39:19,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:39:19,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 12:39:19,215 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:39:19,221 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 12:39:19,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 12:39:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 214 states have (on average 1.4672897196261683) internal successors, (314), 225 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 12:39:19,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:19,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:39:19,254 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:19,258 INFO L85 PathProgramCache]: Analyzing trace with hash 177948251, now seen corresponding path program 1 times [2021-11-02 12:39:19,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:19,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165060305] [2021-11-02 12:39:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:19,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:19,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:19,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165060305] [2021-11-02 12:39:19,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165060305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:19,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:19,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:39:19,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778949736] [2021-11-02 12:39:19,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:39:19,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:39:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:39:19,836 INFO L87 Difference]: Start difference. First operand has 226 states, 214 states have (on average 1.4672897196261683) internal successors, (314), 225 states have internal predecessors, (314), 0 states have call successors, (0), 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 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:21,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:23,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:23,179 INFO L93 Difference]: Finished difference Result 448 states and 623 transitions. [2021-11-02 12:39:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:39:23,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-02 12:39:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:23,193 INFO L225 Difference]: With dead ends: 448 [2021-11-02 12:39:23,193 INFO L226 Difference]: Without dead ends: 219 [2021-11-02 12:39:23,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:39:23,199 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2981.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3263.98ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:23,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 282 Unknown, 0 Unchecked, 4.92ms Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 3263.98ms Time] [2021-11-02 12:39:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-02 12:39:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-02 12:39:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 208 states have (on average 1.3076923076923077) internal successors, (272), 218 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 272 transitions. [2021-11-02 12:39:23,234 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 272 transitions. Word has length 36 [2021-11-02 12:39:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:23,235 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 272 transitions. [2021-11-02 12:39:23,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 272 transitions. [2021-11-02 12:39:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 12:39:23,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:23,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:39:23,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:39:23,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:23,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1820328590, now seen corresponding path program 1 times [2021-11-02 12:39:23,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:23,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062168285] [2021-11-02 12:39:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:23,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:23,496 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 12:39:23,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:23,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062168285] [2021-11-02 12:39:23,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062168285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:23,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:23,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:39:23,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933593694] [2021-11-02 12:39:23,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:39:23,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:39:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:39:23,499 INFO L87 Difference]: Start difference. First operand 219 states and 272 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:25,546 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 12:39:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:27,137 INFO L93 Difference]: Finished difference Result 412 states and 510 transitions. [2021-11-02 12:39:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:39:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-02 12:39:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:27,140 INFO L225 Difference]: With dead ends: 412 [2021-11-02 12:39:27,140 INFO L226 Difference]: Without dead ends: 219 [2021-11-02 12:39:27,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:39:27,142 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 363 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3235.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3553.66ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:27,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 0 Invalid, 435 Unknown, 0 Unchecked, 12.09ms Time], IncrementalHoareTripleChecker [6 Valid, 428 Invalid, 1 Unknown, 0 Unchecked, 3553.66ms Time] [2021-11-02 12:39:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-02 12:39:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-02 12:39:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 208 states have (on average 1.2980769230769231) internal successors, (270), 218 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 270 transitions. [2021-11-02 12:39:27,162 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 270 transitions. Word has length 40 [2021-11-02 12:39:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:27,163 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 270 transitions. [2021-11-02 12:39:27,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 270 transitions. [2021-11-02 12:39:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 12:39:27,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:27,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:39:27,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:39:27,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1693846175, now seen corresponding path program 1 times [2021-11-02 12:39:27,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:27,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695802709] [2021-11-02 12:39:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:27,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:27,385 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 12:39:27,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:27,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695802709] [2021-11-02 12:39:27,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695802709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:27,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:27,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:39:27,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640065828] [2021-11-02 12:39:27,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:39:27,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:39:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:39:27,387 INFO L87 Difference]: Start difference. First operand 219 states and 270 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:29,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:31,879 INFO L93 Difference]: Finished difference Result 473 states and 592 transitions. [2021-11-02 12:39:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:39:31,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-02 12:39:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:31,881 INFO L225 Difference]: With dead ends: 473 [2021-11-02 12:39:31,881 INFO L226 Difference]: Without dead ends: 279 [2021-11-02 12:39:31,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:39:31,882 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4094.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4419.96ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:31,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 859 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [21 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 4419.96ms Time] [2021-11-02 12:39:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-02 12:39:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 231. [2021-11-02 12:39:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 230 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 282 transitions. [2021-11-02 12:39:31,901 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 282 transitions. Word has length 46 [2021-11-02 12:39:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:31,902 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 282 transitions. [2021-11-02 12:39:31,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 282 transitions. [2021-11-02 12:39:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 12:39:31,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:31,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:39:31,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:39:31,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:31,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:31,906 INFO L85 PathProgramCache]: Analyzing trace with hash 992246301, now seen corresponding path program 1 times [2021-11-02 12:39:31,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:31,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981659627] [2021-11-02 12:39:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:31,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:32,231 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 12:39:32,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:32,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981659627] [2021-11-02 12:39:32,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981659627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:32,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:32,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:39:32,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30196649] [2021-11-02 12:39:32,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:39:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:39:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:39:32,233 INFO L87 Difference]: Start difference. First operand 231 states and 282 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:34,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:36,108 INFO L93 Difference]: Finished difference Result 402 states and 489 transitions. [2021-11-02 12:39:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:39:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-02 12:39:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:36,110 INFO L225 Difference]: With dead ends: 402 [2021-11-02 12:39:36,110 INFO L226 Difference]: Without dead ends: 231 [2021-11-02 12:39:36,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 143.96ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:39:36,111 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 565 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3402.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3734.00ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:36,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [5 Valid, 470 Invalid, 1 Unknown, 0 Unchecked, 3734.00ms Time] [2021-11-02 12:39:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-02 12:39:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-02 12:39:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 230 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 281 transitions. [2021-11-02 12:39:36,118 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 281 transitions. Word has length 46 [2021-11-02 12:39:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:36,118 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 281 transitions. [2021-11-02 12:39:36,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 281 transitions. [2021-11-02 12:39:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 12:39:36,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:36,119 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] [2021-11-02 12:39:36,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:39:36,120 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1462511890, now seen corresponding path program 1 times [2021-11-02 12:39:36,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:36,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530046143] [2021-11-02 12:39:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:36,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:36,534 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 12:39:36,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:36,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530046143] [2021-11-02 12:39:36,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530046143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:36,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:36,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:39:36,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57851060] [2021-11-02 12:39:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:39:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:39:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:39:36,536 INFO L87 Difference]: Start difference. First operand 231 states and 281 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:38,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:43,605 INFO L93 Difference]: Finished difference Result 435 states and 523 transitions. [2021-11-02 12:39:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:39:43,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-02 12:39:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:43,607 INFO L225 Difference]: With dead ends: 435 [2021-11-02 12:39:43,607 INFO L226 Difference]: Without dead ends: 340 [2021-11-02 12:39:43,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 148.78ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:39:43,608 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6420.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6894.08ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:43,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 1485 Unknown, 0 Unchecked, 17.82ms Time], IncrementalHoareTripleChecker [2 Valid, 1482 Invalid, 1 Unknown, 0 Unchecked, 6894.08ms Time] [2021-11-02 12:39:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-02 12:39:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 224. [2021-11-02 12:39:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 213 states have (on average 1.272300469483568) internal successors, (271), 223 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 271 transitions. [2021-11-02 12:39:43,613 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 271 transitions. Word has length 52 [2021-11-02 12:39:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:43,614 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 271 transitions. [2021-11-02 12:39:43,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 271 transitions. [2021-11-02 12:39:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 12:39:43,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:43,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:39:43,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:39:43,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 115049678, now seen corresponding path program 1 times [2021-11-02 12:39:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:43,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744585051] [2021-11-02 12:39:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:43,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:43,852 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 12:39:43,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:43,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744585051] [2021-11-02 12:39:43,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744585051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:43,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:39:43,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 12:39:43,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877458595] [2021-11-02 12:39:43,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 12:39:43,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:43,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 12:39:43,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:39:43,853 INFO L87 Difference]: Start difference. First operand 224 states and 271 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:45,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:39:47,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:47,671 INFO L93 Difference]: Finished difference Result 330 states and 399 transitions. [2021-11-02 12:39:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 12:39:47,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-02 12:39:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:47,672 INFO L225 Difference]: With dead ends: 330 [2021-11-02 12:39:47,673 INFO L226 Difference]: Without dead ends: 225 [2021-11-02 12:39:47,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:39:47,673 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3482.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3778.34ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:47,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 516 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 3778.34ms Time] [2021-11-02 12:39:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-02 12:39:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-02 12:39:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2710280373831775) internal successors, (272), 224 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 272 transitions. [2021-11-02 12:39:47,679 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 272 transitions. Word has length 56 [2021-11-02 12:39:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:47,679 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 272 transitions. [2021-11-02 12:39:47,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 272 transitions. [2021-11-02 12:39:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 12:39:47,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:47,680 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 12:39:47,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:39:47,680 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -886795847, now seen corresponding path program 1 times [2021-11-02 12:39:47,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:47,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265379336] [2021-11-02 12:39:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:47,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:47,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:47,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265379336] [2021-11-02 12:39:47,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265379336] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:39:47,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786897226] [2021-11-02 12:39:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:47,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:39:47,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:39:48,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:39:48,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 12:39:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:48,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 12:39:48,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:39:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:49,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:39:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:49,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786897226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 12:39:49,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 12:39:49,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 12:39:49,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684057127] [2021-11-02 12:39:49,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:39:49,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:39:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:39:49,235 INFO L87 Difference]: Start difference. First operand 225 states and 272 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:51,282 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 12:39:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:39:55,214 INFO L93 Difference]: Finished difference Result 333 states and 404 transitions. [2021-11-02 12:39:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:39:55,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 12:39:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:39:55,215 INFO L225 Difference]: With dead ends: 333 [2021-11-02 12:39:55,215 INFO L226 Difference]: Without dead ends: 228 [2021-11-02 12:39:55,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 174.22ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:39:55,216 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5455.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.55ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5909.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:55,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1291 Unknown, 0 Unchecked, 13.55ms Time], IncrementalHoareTripleChecker [3 Valid, 1287 Invalid, 1 Unknown, 0 Unchecked, 5909.18ms Time] [2021-11-02 12:39:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-02 12:39:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-02 12:39:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 217 states have (on average 1.2672811059907834) internal successors, (275), 227 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 275 transitions. [2021-11-02 12:39:55,221 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 275 transitions. Word has length 57 [2021-11-02 12:39:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:39:55,221 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 275 transitions. [2021-11-02 12:39:55,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 275 transitions. [2021-11-02 12:39:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 12:39:55,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:39:55,222 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:55,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 12:39:55,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:39:55,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:39:55,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:39:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1462560654, now seen corresponding path program 2 times [2021-11-02 12:39:55,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:39:55,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316375738] [2021-11-02 12:39:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:39:55,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:39:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:39:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:55,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:39:55,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316375738] [2021-11-02 12:39:55,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316375738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:39:55,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370197010] [2021-11-02 12:39:55,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 12:39:55,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:39:55,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:39:55,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:39:55,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 12:39:56,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 12:39:56,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 12:39:56,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 12:39:56,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:39:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 12:39:57,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:39:57,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370197010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:39:57,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 12:39:57,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-02 12:39:57,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282819848] [2021-11-02 12:39:57,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:39:57,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:39:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:39:57,151 INFO L87 Difference]: Start difference. First operand 228 states and 275 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 12:39:59,201 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 12:40:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:01,388 INFO L93 Difference]: Finished difference Result 321 states and 382 transitions. [2021-11-02 12:40:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:40:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 60 [2021-11-02 12:40:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:01,390 INFO L225 Difference]: With dead ends: 321 [2021-11-02 12:40:01,390 INFO L226 Difference]: Without dead ends: 228 [2021-11-02 12:40:01,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 571.38ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:40:01,391 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 744 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3604.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3936.07ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:01,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 0 Invalid, 506 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [9 Valid, 496 Invalid, 1 Unknown, 0 Unchecked, 3936.07ms Time] [2021-11-02 12:40:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-02 12:40:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-02 12:40:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 217 states have (on average 1.2534562211981566) internal successors, (272), 227 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2021-11-02 12:40:01,396 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 60 [2021-11-02 12:40:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:01,396 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2021-11-02 12:40:01,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 12:40:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2021-11-02 12:40:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 12:40:01,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:01,398 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:01,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 12:40:01,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-02 12:40:01,599 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 943462691, now seen corresponding path program 1 times [2021-11-02 12:40:01,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:01,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581940203] [2021-11-02 12:40:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:01,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:02,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:02,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581940203] [2021-11-02 12:40:02,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581940203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:40:02,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944009297] [2021-11-02 12:40:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:02,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:40:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:40:02,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:40:02,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 12:40:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 12:40:02,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:03,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:03,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944009297] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 12:40:03,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 12:40:03,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-02 12:40:03,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980281792] [2021-11-02 12:40:03,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:40:03,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:40:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:40:03,788 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:05,855 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 12:40:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:10,784 INFO L93 Difference]: Finished difference Result 339 states and 408 transitions. [2021-11-02 12:40:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:40:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 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 12:40:10,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:10,795 INFO L225 Difference]: With dead ends: 339 [2021-11-02 12:40:10,795 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 12:40:10,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 717.13ms TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:40:10,796 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6436.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.66ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6923.40ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:10,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1541 Unknown, 0 Unchecked, 10.66ms Time], IncrementalHoareTripleChecker [7 Valid, 1533 Invalid, 1 Unknown, 0 Unchecked, 6923.40ms Time] [2021-11-02 12:40:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 12:40:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-02 12:40:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 223 states have (on average 1.2466367713004485) internal successors, (278), 233 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2021-11-02 12:40:10,801 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 66 [2021-11-02 12:40:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:10,802 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2021-11-02 12:40:10,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2021-11-02 12:40:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 12:40:10,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:10,803 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:10,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 12:40:11,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:40:11,008 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 219398467, now seen corresponding path program 2 times [2021-11-02 12:40:11,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:11,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925321000] [2021-11-02 12:40:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:11,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:11,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:11,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925321000] [2021-11-02 12:40:11,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925321000] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:40:11,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066788034] [2021-11-02 12:40:11,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 12:40:11,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:40:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:40:11,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:40:11,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 12:40:12,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 12:40:12,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 12:40:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 12:40:12,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-02 12:40:12,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:40:12,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066788034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:12,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 12:40:12,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-02 12:40:12,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188421123] [2021-11-02 12:40:12,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:40:12,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:40:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:40:12,870 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:15,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:19,963 INFO L93 Difference]: Finished difference Result 395 states and 452 transitions. [2021-11-02 12:40:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:40:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 12:40:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:19,965 INFO L225 Difference]: With dead ends: 395 [2021-11-02 12:40:19,965 INFO L226 Difference]: Without dead ends: 387 [2021-11-02 12:40:19,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 984.47ms TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:40:19,966 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 278 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6284.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.61ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6698.25ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:19,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 0 Invalid, 1451 Unknown, 0 Unchecked, 7.61ms Time], IncrementalHoareTripleChecker [41 Valid, 1409 Invalid, 1 Unknown, 0 Unchecked, 6698.25ms Time] [2021-11-02 12:40:19,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-02 12:40:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 250. [2021-11-02 12:40:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 239 states have (on average 1.2301255230125523) internal successors, (294), 249 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2021-11-02 12:40:19,973 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 72 [2021-11-02 12:40:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:19,973 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2021-11-02 12:40:19,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2021-11-02 12:40:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:40:19,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:19,974 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:19,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 12:40:20,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:40:20,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash 13612923, now seen corresponding path program 1 times [2021-11-02 12:40:20,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:20,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106418668] [2021-11-02 12:40:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:20,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-02 12:40:20,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:20,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106418668] [2021-11-02 12:40:20,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106418668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:20,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:20,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:40:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221346774] [2021-11-02 12:40:20,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:40:20,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:20,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:40:20,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:40:20,416 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:40:22,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:26,239 INFO L93 Difference]: Finished difference Result 704 states and 832 transitions. [2021-11-02 12:40:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:40:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 76 [2021-11-02 12:40:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:26,241 INFO L225 Difference]: With dead ends: 704 [2021-11-02 12:40:26,241 INFO L226 Difference]: Without dead ends: 476 [2021-11-02 12:40:26,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 116.54ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:40:26,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 384 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5281.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.73ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5682.89ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:26,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 0 Invalid, 993 Unknown, 0 Unchecked, 11.73ms Time], IncrementalHoareTripleChecker [27 Valid, 965 Invalid, 1 Unknown, 0 Unchecked, 5682.89ms Time] [2021-11-02 12:40:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-02 12:40:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 292. [2021-11-02 12:40:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 281 states have (on average 1.2384341637010676) internal successors, (348), 291 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 348 transitions. [2021-11-02 12:40:26,250 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 348 transitions. Word has length 76 [2021-11-02 12:40:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:26,250 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 348 transitions. [2021-11-02 12:40:26,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:40:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 348 transitions. [2021-11-02 12:40:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:40:26,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:26,251 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:26,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:40:26,252 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:26,252 INFO L85 PathProgramCache]: Analyzing trace with hash 693671293, now seen corresponding path program 1 times [2021-11-02 12:40:26,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:26,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049842746] [2021-11-02 12:40:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:26,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:27,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:27,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049842746] [2021-11-02 12:40:27,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049842746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:40:27,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638657932] [2021-11-02 12:40:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:27,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:40:27,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:40:27,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:40:27,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 12:40:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:27,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 12:40:27,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:29,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:40:30,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638657932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 12:40:30,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 12:40:30,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2021-11-02 12:40:30,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092222551] [2021-11-02 12:40:30,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 12:40:30,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 12:40:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=650, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 12:40:30,469 INFO L87 Difference]: Start difference. First operand 292 states and 348 transitions. Second operand has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:33,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:37,362 INFO L93 Difference]: Finished difference Result 442 states and 535 transitions. [2021-11-02 12:40:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 12:40:37,363 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 12:40:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:37,364 INFO L225 Difference]: With dead ends: 442 [2021-11-02 12:40:37,364 INFO L226 Difference]: Without dead ends: 304 [2021-11-02 12:40:37,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2609.04ms TimeCoverageRelationStatistics Valid=540, Invalid=650, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 12:40:37,365 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6350.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.87ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6796.30ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:37,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1310 Unknown, 0 Unchecked, 21.87ms Time], IncrementalHoareTripleChecker [13 Valid, 1296 Invalid, 1 Unknown, 0 Unchecked, 6796.30ms Time] [2021-11-02 12:40:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-02 12:40:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-02 12:40:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2286689419795223) internal successors, (360), 303 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 360 transitions. [2021-11-02 12:40:37,375 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 360 transitions. Word has length 76 [2021-11-02 12:40:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:37,375 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 360 transitions. [2021-11-02 12:40:37,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 360 transitions. [2021-11-02 12:40:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:40:37,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:37,376 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 12:40:37,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 12:40:37,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 12:40:37,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1507685627, now seen corresponding path program 1 times [2021-11-02 12:40:37,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:37,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492781417] [2021-11-02 12:40:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:37,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:37,967 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 12:40:37,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:37,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492781417] [2021-11-02 12:40:37,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492781417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:37,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:40:37,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069874381] [2021-11-02 12:40:37,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:40:37,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:40:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:40:37,969 INFO L87 Difference]: Start difference. First operand 304 states and 360 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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 12:40:40,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:44,689 INFO L93 Difference]: Finished difference Result 756 states and 891 transitions. [2021-11-02 12:40:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:40:44,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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 12:40:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:44,691 INFO L225 Difference]: With dead ends: 756 [2021-11-02 12:40:44,691 INFO L226 Difference]: Without dead ends: 607 [2021-11-02 12:40:44,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.16ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:40:44,692 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6177.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6613.08ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:44,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 9.48ms Time], IncrementalHoareTripleChecker [1 Valid, 1146 Invalid, 1 Unknown, 0 Unchecked, 6613.08ms Time] [2021-11-02 12:40:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-02 12:40:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 307. [2021-11-02 12:40:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 296 states have (on average 1.2263513513513513) internal successors, (363), 306 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 363 transitions. [2021-11-02 12:40:44,701 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 363 transitions. Word has length 85 [2021-11-02 12:40:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:44,701 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 363 transitions. [2021-11-02 12:40:44,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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 12:40:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 363 transitions. [2021-11-02 12:40:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:40:44,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:44,702 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 12:40:44,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:40:44,703 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:44,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1198083625, now seen corresponding path program 1 times [2021-11-02 12:40:44,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:44,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428488349] [2021-11-02 12:40:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:44,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:45,093 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 12:40:45,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:45,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428488349] [2021-11-02 12:40:45,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428488349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:45,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:45,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:40:45,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403377334] [2021-11-02 12:40:45,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:40:45,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:40:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:40:45,095 INFO L87 Difference]: Start difference. First operand 307 states and 363 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 12:40:47,137 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 12:40:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:52,210 INFO L93 Difference]: Finished difference Result 461 states and 543 transitions. [2021-11-02 12:40:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 12:40:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 12:40:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:52,212 INFO L225 Difference]: With dead ends: 461 [2021-11-02 12:40:52,212 INFO L226 Difference]: Without dead ends: 302 [2021-11-02 12:40:52,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 423.17ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:40:52,213 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6314.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6795.60ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:52,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 1530 Unknown, 0 Unchecked, 11.15ms Time], IncrementalHoareTripleChecker [1 Valid, 1528 Invalid, 1 Unknown, 0 Unchecked, 6795.60ms Time] [2021-11-02 12:40:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-02 12:40:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-11-02 12:40:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2233676975945018) internal successors, (356), 301 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 356 transitions. [2021-11-02 12:40:52,221 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 356 transitions. Word has length 87 [2021-11-02 12:40:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 356 transitions. [2021-11-02 12:40:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 12:40:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 356 transitions. [2021-11-02 12:40:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:40:52,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:52,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:40:52,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:40:52,222 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:40:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:52,223 INFO L85 PathProgramCache]: Analyzing trace with hash -682333353, now seen corresponding path program 1 times [2021-11-02 12:40:52,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:40:52,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546639878] [2021-11-02 12:40:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:52,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:40:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:54,708 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 12:40:54,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:40:54,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546639878] [2021-11-02 12:40:54,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546639878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:54,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:54,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:40:54,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882881326] [2021-11-02 12:40:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:40:54,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:40:54,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:40:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:40:54,710 INFO L87 Difference]: Start difference. First operand 302 states and 356 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:57,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:02,440 INFO L93 Difference]: Finished difference Result 659 states and 785 transitions. [2021-11-02 12:41:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:41:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 12:41:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:02,442 INFO L225 Difference]: With dead ends: 659 [2021-11-02 12:41:02,442 INFO L226 Difference]: Without dead ends: 391 [2021-11-02 12:41:02,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 920.89ms TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:41:02,445 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 777 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6398.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.54ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7000.59ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:02,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 0 Invalid, 1377 Unknown, 0 Unchecked, 14.54ms Time], IncrementalHoareTripleChecker [27 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 7000.59ms Time] [2021-11-02 12:41:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-02 12:41:02,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 298. [2021-11-02 12:41:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.2195121951219512) internal successors, (350), 297 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 350 transitions. [2021-11-02 12:41:02,455 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 350 transitions. Word has length 88 [2021-11-02 12:41:02,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:02,455 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 350 transitions. [2021-11-02 12:41:02,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 350 transitions. [2021-11-02 12:41:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 12:41:02,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:02,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:02,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:41:02,458 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:41:02,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1452481695, now seen corresponding path program 1 times [2021-11-02 12:41:02,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:02,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32163134] [2021-11-02 12:41:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:02,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:03,073 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 12:41:03,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:03,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32163134] [2021-11-02 12:41:03,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32163134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:03,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:03,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:41:03,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397401641] [2021-11-02 12:41:03,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:41:03,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:41:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:41:03,074 INFO L87 Difference]: Start difference. First operand 298 states and 350 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:05,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:16,553 INFO L93 Difference]: Finished difference Result 712 states and 839 transitions. [2021-11-02 12:41:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:41:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 12:41:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:16,555 INFO L225 Difference]: With dead ends: 712 [2021-11-02 12:41:16,555 INFO L226 Difference]: Without dead ends: 436 [2021-11-02 12:41:16,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 931.30ms TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:41:16,556 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 662 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11869.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.16ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12749.10ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:16,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 0 Invalid, 3174 Unknown, 0 Unchecked, 30.16ms Time], IncrementalHoareTripleChecker [42 Valid, 3131 Invalid, 1 Unknown, 0 Unchecked, 12749.10ms Time] [2021-11-02 12:41:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-02 12:41:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 315. [2021-11-02 12:41:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.1842105263157894) internal successors, (360), 314 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 360 transitions. [2021-11-02 12:41:16,565 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 360 transitions. Word has length 92 [2021-11-02 12:41:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:16,565 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 360 transitions. [2021-11-02 12:41:16,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 360 transitions. [2021-11-02 12:41:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 12:41:16,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:16,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:16,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:41:16,567 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:41:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1425416093, now seen corresponding path program 1 times [2021-11-02 12:41:16,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:16,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953530457] [2021-11-02 12:41:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:16,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:17,142 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 12:41:17,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:17,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953530457] [2021-11-02 12:41:17,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953530457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:17,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:17,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:41:17,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609993355] [2021-11-02 12:41:17,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:41:17,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:41:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:41:17,144 INFO L87 Difference]: Start difference. First operand 315 states and 360 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:20,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:26,643 INFO L93 Difference]: Finished difference Result 728 states and 814 transitions. [2021-11-02 12:41:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:41:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 12:41:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:26,645 INFO L225 Difference]: With dead ends: 728 [2021-11-02 12:41:26,645 INFO L226 Difference]: Without dead ends: 449 [2021-11-02 12:41:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 249.59ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:41:26,646 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8573.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.90ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9294.47ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 1982 Unknown, 0 Unchecked, 15.90ms Time], IncrementalHoareTripleChecker [32 Valid, 1949 Invalid, 1 Unknown, 0 Unchecked, 9294.47ms Time] [2021-11-02 12:41:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-02 12:41:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 315. [2021-11-02 12:41:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.1776315789473684) internal successors, (358), 314 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 358 transitions. [2021-11-02 12:41:26,665 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 358 transitions. Word has length 92 [2021-11-02 12:41:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:26,665 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 358 transitions. [2021-11-02 12:41:26,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 358 transitions. [2021-11-02 12:41:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:41:26,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:26,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:26,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:41:26,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:41:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash -684974398, now seen corresponding path program 1 times [2021-11-02 12:41:26,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:26,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600414781] [2021-11-02 12:41:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:26,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:26,884 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 12:41:26,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:26,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600414781] [2021-11-02 12:41:26,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600414781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:26,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:26,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:41:26,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292380311] [2021-11-02 12:41:26,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:41:26,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:26,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:41:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:41:26,885 INFO L87 Difference]: Start difference. First operand 315 states and 358 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:29,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:32,536 INFO L93 Difference]: Finished difference Result 618 states and 702 transitions. [2021-11-02 12:41:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:41:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-02 12:41:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:32,538 INFO L225 Difference]: With dead ends: 618 [2021-11-02 12:41:32,538 INFO L226 Difference]: Without dead ends: 323 [2021-11-02 12:41:32,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:41:32,539 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5099.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5591.84ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:32,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 782 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [20 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 5591.84ms Time] [2021-11-02 12:41:32,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-02 12:41:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 293. [2021-11-02 12:41:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 282 states have (on average 1.1702127659574468) internal successors, (330), 292 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2021-11-02 12:41:32,547 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 94 [2021-11-02 12:41:32,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:32,547 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2021-11-02 12:41:32,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2021-11-02 12:41:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:41:32,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:32,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:32,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:41:32,548 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:41:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 574764168, now seen corresponding path program 1 times [2021-11-02 12:41:32,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:32,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972799099] [2021-11-02 12:41:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:32,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:37,046 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 12:41:37,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:37,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972799099] [2021-11-02 12:41:37,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972799099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:37,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:37,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:41:37,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339394674] [2021-11-02 12:41:37,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:41:37,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:41:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:41:37,047 INFO L87 Difference]: Start difference. First operand 293 states and 330 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:40,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:48,000 INFO L93 Difference]: Finished difference Result 545 states and 615 transitions. [2021-11-02 12:41:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:41:48,000 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-02 12:41:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:48,001 INFO L225 Difference]: With dead ends: 545 [2021-11-02 12:41:48,001 INFO L226 Difference]: Without dead ends: 421 [2021-11-02 12:41:48,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2330.28ms TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:41:48,002 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1478 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8437.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.00ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9156.50ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:48,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 0 Invalid, 1908 Unknown, 0 Unchecked, 23.00ms Time], IncrementalHoareTripleChecker [15 Valid, 1892 Invalid, 1 Unknown, 0 Unchecked, 9156.50ms Time] [2021-11-02 12:41:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-02 12:41:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 299. [2021-11-02 12:41:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.1701388888888888) internal successors, (337), 298 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 337 transitions. [2021-11-02 12:41:48,011 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 337 transitions. Word has length 94 [2021-11-02 12:41:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:48,011 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 337 transitions. [2021-11-02 12:41:48,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 337 transitions. [2021-11-02 12:41:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:41:48,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:48,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:48,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:41:48,012 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:41:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash -178187644, now seen corresponding path program 1 times [2021-11-02 12:41:48,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:48,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129918634] [2021-11-02 12:41:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:48,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:41:50,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:50,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129918634] [2021-11-02 12:41:50,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129918634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:50,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:50,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:41:50,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666962250] [2021-11-02 12:41:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:41:50,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:41:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:41:50,430 INFO L87 Difference]: Start difference. First operand 299 states and 337 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:53,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:58,937 INFO L93 Difference]: Finished difference Result 593 states and 667 transitions. [2021-11-02 12:41:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:41:58,937 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-02 12:41:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:58,938 INFO L225 Difference]: With dead ends: 593 [2021-11-02 12:41:58,938 INFO L226 Difference]: Without dead ends: 348 [2021-11-02 12:41:58,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 890.00ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:41:58,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 806 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7343.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.47ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7977.95ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:58,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 0 Invalid, 1680 Unknown, 0 Unchecked, 17.47ms Time], IncrementalHoareTripleChecker [20 Valid, 1659 Invalid, 1 Unknown, 0 Unchecked, 7977.95ms Time] [2021-11-02 12:41:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-02 12:41:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 306. [2021-11-02 12:41:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 295 states have (on average 1.1661016949152543) internal successors, (344), 305 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2021-11-02 12:41:58,949 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 94 [2021-11-02 12:41:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:58,949 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2021-11-02 12:41:58,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2021-11-02 12:41:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:41:58,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:58,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:58,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:41:58,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:41:58,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1856520580, now seen corresponding path program 1 times [2021-11-02 12:41:58,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:41:58,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121582686] [2021-11-02 12:41:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:58,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:41:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:59,201 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 12:41:59,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:41:59,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121582686] [2021-11-02 12:41:59,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121582686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:59,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:59,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:41:59,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019384225] [2021-11-02 12:41:59,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:41:59,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:41:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:41:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:41:59,202 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:02,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:08,273 INFO L93 Difference]: Finished difference Result 876 states and 982 transitions. [2021-11-02 12:42:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 12:42:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-02 12:42:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:08,275 INFO L225 Difference]: With dead ends: 876 [2021-11-02 12:42:08,275 INFO L226 Difference]: Without dead ends: 612 [2021-11-02 12:42:08,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 309.14ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:42:08,276 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 338 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8048.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.92ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8747.76ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:08,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 0 Invalid, 1897 Unknown, 0 Unchecked, 15.92ms Time], IncrementalHoareTripleChecker [8 Valid, 1888 Invalid, 1 Unknown, 0 Unchecked, 8747.76ms Time] [2021-11-02 12:42:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-11-02 12:42:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 318. [2021-11-02 12:42:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 307 states have (on average 1.1596091205211727) internal successors, (356), 317 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 356 transitions. [2021-11-02 12:42:08,288 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 356 transitions. Word has length 97 [2021-11-02 12:42:08,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:08,288 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 356 transitions. [2021-11-02 12:42:08,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 356 transitions. [2021-11-02 12:42:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:42:08,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:08,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:42:08,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:42:08,290 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:42:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash -220816318, now seen corresponding path program 1 times [2021-11-02 12:42:08,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:08,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102024503] [2021-11-02 12:42:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:08,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:09,605 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 12:42:09,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:09,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102024503] [2021-11-02 12:42:09,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102024503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:09,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:09,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:42:09,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767684074] [2021-11-02 12:42:09,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:42:09,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:42:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:42:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:42:09,606 INFO L87 Difference]: Start difference. First operand 318 states and 356 transitions. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:12,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:27,962 INFO L93 Difference]: Finished difference Result 672 states and 743 transitions. [2021-11-02 12:42:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 12:42:27,962 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-02 12:42:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:27,963 INFO L225 Difference]: With dead ends: 672 [2021-11-02 12:42:27,964 INFO L226 Difference]: Without dead ends: 431 [2021-11-02 12:42:27,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4016.11ms TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 12:42:27,965 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1052 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13961.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.84ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14976.20ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:27,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 0 Invalid, 3884 Unknown, 0 Unchecked, 42.84ms Time], IncrementalHoareTripleChecker [76 Valid, 3807 Invalid, 1 Unknown, 0 Unchecked, 14976.20ms Time] [2021-11-02 12:42:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-02 12:42:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 316. [2021-11-02 12:42:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 305 states have (on average 1.1540983606557378) internal successors, (352), 315 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 352 transitions. [2021-11-02 12:42:27,976 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 352 transitions. Word has length 97 [2021-11-02 12:42:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:27,977 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 352 transitions. [2021-11-02 12:42:27,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 352 transitions. [2021-11-02 12:42:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:42:27,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:27,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:42:27,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:42:27,978 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:42:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1979179912, now seen corresponding path program 1 times [2021-11-02 12:42:27,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:27,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416041748] [2021-11-02 12:42:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:27,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:28,470 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 12:42:28,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:28,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416041748] [2021-11-02 12:42:28,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416041748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:28,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:28,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:42:28,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929654074] [2021-11-02 12:42:28,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:42:28,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:42:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:42:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:42:28,471 INFO L87 Difference]: Start difference. First operand 316 states and 352 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:31,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:37,824 INFO L93 Difference]: Finished difference Result 610 states and 680 transitions. [2021-11-02 12:42:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:42:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 12:42:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:37,826 INFO L225 Difference]: With dead ends: 610 [2021-11-02 12:42:37,826 INFO L226 Difference]: Without dead ends: 374 [2021-11-02 12:42:37,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 831.58ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:42:37,827 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 281 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8020.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.25ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8681.01ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:37,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 2034 Unknown, 0 Unchecked, 16.25ms Time], IncrementalHoareTripleChecker [27 Valid, 2006 Invalid, 1 Unknown, 0 Unchecked, 8681.01ms Time] [2021-11-02 12:42:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-02 12:42:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 330. [2021-11-02 12:42:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 319 states have (on average 1.1504702194357366) internal successors, (367), 329 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 367 transitions. [2021-11-02 12:42:37,838 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 367 transitions. Word has length 98 [2021-11-02 12:42:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:37,838 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 367 transitions. [2021-11-02 12:42:37,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 367 transitions. [2021-11-02 12:42:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 12:42:37,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:37,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:42:37,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:42:37,840 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:42:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1535279238, now seen corresponding path program 1 times [2021-11-02 12:42:37,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:37,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394126210] [2021-11-02 12:42:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:37,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:38,321 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 12:42:38,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:38,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394126210] [2021-11-02 12:42:38,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394126210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:38,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:38,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:42:38,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704854440] [2021-11-02 12:42:38,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:42:38,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:42:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:42:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:42:38,323 INFO L87 Difference]: Start difference. First operand 330 states and 367 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:41,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:46,449 INFO L93 Difference]: Finished difference Result 637 states and 704 transitions. [2021-11-02 12:42:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:42:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 12:42:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:46,451 INFO L225 Difference]: With dead ends: 637 [2021-11-02 12:42:46,451 INFO L226 Difference]: Without dead ends: 394 [2021-11-02 12:42:46,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 230.42ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:42:46,452 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7334.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.29ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7951.72ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:46,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 0 Invalid, 1729 Unknown, 0 Unchecked, 11.29ms Time], IncrementalHoareTripleChecker [27 Valid, 1701 Invalid, 1 Unknown, 0 Unchecked, 7951.72ms Time] [2021-11-02 12:42:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-02 12:42:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 302. [2021-11-02 12:42:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.1512027491408934) internal successors, (335), 301 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 335 transitions. [2021-11-02 12:42:46,477 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 335 transitions. Word has length 98 [2021-11-02 12:42:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:46,478 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 335 transitions. [2021-11-02 12:42:46,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 335 transitions. [2021-11-02 12:42:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:42:46,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:46,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:42:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:42:46,479 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:42:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 820944947, now seen corresponding path program 1 times [2021-11-02 12:42:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:42:46,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913222436] [2021-11-02 12:42:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:46,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:42:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:50,025 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 12:42:50,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:42:50,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913222436] [2021-11-02 12:42:50,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913222436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:50,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:50,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:42:50,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920952974] [2021-11-02 12:42:50,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 12:42:50,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:42:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 12:42:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:42:50,026 INFO L87 Difference]: Start difference. First operand 302 states and 335 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:42:52,071 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 12:43:04,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:43:04,478 INFO L93 Difference]: Finished difference Result 607 states and 672 transitions. [2021-11-02 12:43:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 12:43:04,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 12:43:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:43:04,480 INFO L225 Difference]: With dead ends: 607 [2021-11-02 12:43:04,480 INFO L226 Difference]: Without dead ends: 491 [2021-11-02 12:43:04,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4911.18ms TimeCoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 12:43:04,481 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1972 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9808.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.68ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10544.33ms IncrementalHoareTripleChecker+Time [2021-11-02 12:43:04,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1972 Valid, 0 Invalid, 2840 Unknown, 0 Unchecked, 32.68ms Time], IncrementalHoareTripleChecker [96 Valid, 2743 Invalid, 1 Unknown, 0 Unchecked, 10544.33ms Time] [2021-11-02 12:43:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-02 12:43:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 429. [2021-11-02 12:43:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 418 states have (on average 1.1531100478468899) internal successors, (482), 428 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 482 transitions. [2021-11-02 12:43:04,501 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 482 transitions. Word has length 100 [2021-11-02 12:43:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:43:04,501 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 482 transitions. [2021-11-02 12:43:04,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 482 transitions. [2021-11-02 12:43:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:43:04,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:43:04,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:43:04,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:43:04,503 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:43:04,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:43:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 140886577, now seen corresponding path program 1 times [2021-11-02 12:43:04,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:43:04,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615468425] [2021-11-02 12:43:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:43:04,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:43:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:43:05,198 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 12:43:05,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:43:05,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615468425] [2021-11-02 12:43:05,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615468425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:43:05,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:43:05,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:43:05,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093201792] [2021-11-02 12:43:05,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:43:05,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:43:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:43:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:43:05,199 INFO L87 Difference]: Start difference. First operand 429 states and 482 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:08,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:43:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:43:20,028 INFO L93 Difference]: Finished difference Result 745 states and 823 transitions. [2021-11-02 12:43:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 12:43:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 12:43:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:43:20,031 INFO L225 Difference]: With dead ends: 745 [2021-11-02 12:43:20,031 INFO L226 Difference]: Without dead ends: 639 [2021-11-02 12:43:20,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1716.11ms TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2021-11-02 12:43:20,031 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12446.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.73ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13316.60ms IncrementalHoareTripleChecker+Time [2021-11-02 12:43:20,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 3360 Unknown, 0 Unchecked, 30.73ms Time], IncrementalHoareTripleChecker [28 Valid, 3331 Invalid, 1 Unknown, 0 Unchecked, 13316.60ms Time] [2021-11-02 12:43:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-02 12:43:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 489. [2021-11-02 12:43:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 478 states have (on average 1.1401673640167365) internal successors, (545), 488 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 545 transitions. [2021-11-02 12:43:20,050 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 545 transitions. Word has length 100 [2021-11-02 12:43:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:43:20,051 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 545 transitions. [2021-11-02 12:43:20,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 545 transitions. [2021-11-02 12:43:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:43:20,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:43:20,052 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:20,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:43:20,052 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:43:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:43:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 731075741, now seen corresponding path program 1 times [2021-11-02 12:43:20,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:43:20,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143013784] [2021-11-02 12:43:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:43:20,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:43:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:43:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:43:21,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:43:21,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143013784] [2021-11-02 12:43:21,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143013784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:43:21,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576384334] [2021-11-02 12:43:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:43:21,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:43:21,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:43:21,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:43:21,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 12:43:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:43:22,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 12:43:22,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:43:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:43:25,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:43:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:43:29,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576384334] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 12:43:29,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 12:43:29,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2021-11-02 12:43:29,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672081235] [2021-11-02 12:43:29,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-02 12:43:29,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:43:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-02 12:43:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2050, Invalid=2920, Unknown=0, NotChecked=0, Total=4970 [2021-11-02 12:43:29,737 INFO L87 Difference]: Start difference. First operand 489 states and 545 transitions. Second operand has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 71 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:32,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:43:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:43:38,327 INFO L93 Difference]: Finished difference Result 637 states and 722 transitions. [2021-11-02 12:43:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 12:43:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 71 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 12:43:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:43:38,329 INFO L225 Difference]: With dead ends: 637 [2021-11-02 12:43:38,329 INFO L226 Difference]: Without dead ends: 499 [2021-11-02 12:43:38,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 7805.79ms TimeCoverageRelationStatistics Valid=2050, Invalid=2920, Unknown=0, NotChecked=0, Total=4970 [2021-11-02 12:43:38,331 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7780.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.95ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8458.83ms IncrementalHoareTripleChecker+Time [2021-11-02 12:43:38,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1743 Unknown, 0 Unchecked, 14.95ms Time], IncrementalHoareTripleChecker [16 Valid, 1726 Invalid, 1 Unknown, 0 Unchecked, 8458.83ms Time] [2021-11-02 12:43:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-02 12:43:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-11-02 12:43:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 488 states have (on average 1.1372950819672132) internal successors, (555), 498 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 555 transitions. [2021-11-02 12:43:38,349 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 555 transitions. Word has length 100 [2021-11-02 12:43:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:43:38,349 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 555 transitions. [2021-11-02 12:43:38,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 71 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 555 transitions. [2021-11-02 12:43:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:43:38,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:43:38,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:43:38,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 12:43:38,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 12:43:38,567 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:43:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:43:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 381126323, now seen corresponding path program 1 times [2021-11-02 12:43:38,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:43:38,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125361666] [2021-11-02 12:43:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:43:38,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:43:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:43:38,998 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 12:43:38,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:43:38,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125361666] [2021-11-02 12:43:38,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125361666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:43:38,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:43:38,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:43:38,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990951504] [2021-11-02 12:43:38,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:43:38,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:43:38,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:43:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:43:38,999 INFO L87 Difference]: Start difference. First operand 499 states and 555 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:41,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:43:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:43:48,262 INFO L93 Difference]: Finished difference Result 873 states and 975 transitions. [2021-11-02 12:43:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:43:48,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 12:43:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:43:48,263 INFO L225 Difference]: With dead ends: 873 [2021-11-02 12:43:48,264 INFO L226 Difference]: Without dead ends: 552 [2021-11-02 12:43:48,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 536.86ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:43:48,264 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8163.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.53ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8826.67ms IncrementalHoareTripleChecker+Time [2021-11-02 12:43:48,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 1891 Unknown, 0 Unchecked, 16.53ms Time], IncrementalHoareTripleChecker [19 Valid, 1871 Invalid, 1 Unknown, 0 Unchecked, 8826.67ms Time] [2021-11-02 12:43:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-02 12:43:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 499. [2021-11-02 12:43:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 488 states have (on average 1.1352459016393444) internal successors, (554), 498 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 554 transitions. [2021-11-02 12:43:48,307 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 554 transitions. Word has length 100 [2021-11-02 12:43:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:43:48,307 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 554 transitions. [2021-11-02 12:43:48,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 554 transitions. [2021-11-02 12:43:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:43:48,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:43:48,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:43:48,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:43:48,308 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:43:48,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:43:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1919466353, now seen corresponding path program 1 times [2021-11-02 12:43:48,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:43:48,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006131952] [2021-11-02 12:43:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:43:48,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:43:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:43:51,939 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 12:43:51,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:43:51,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006131952] [2021-11-02 12:43:51,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006131952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:43:51,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:43:51,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:43:51,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548846664] [2021-11-02 12:43:51,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:43:51,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:43:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:43:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:43:51,940 INFO L87 Difference]: Start difference. First operand 499 states and 554 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:43:53,986 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 12:44:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:44:06,289 INFO L93 Difference]: Finished difference Result 663 states and 723 transitions. [2021-11-02 12:44:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:44:06,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 12:44:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:44:06,292 INFO L225 Difference]: With dead ends: 663 [2021-11-02 12:44:06,292 INFO L226 Difference]: Without dead ends: 557 [2021-11-02 12:44:06,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1830.06ms TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-11-02 12:44:06,292 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 546 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 3539 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12100.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.54ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3539 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12937.02ms IncrementalHoareTripleChecker+Time [2021-11-02 12:44:06,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 0 Invalid, 3567 Unknown, 0 Unchecked, 36.54ms Time], IncrementalHoareTripleChecker [27 Valid, 3539 Invalid, 1 Unknown, 0 Unchecked, 12937.02ms Time] [2021-11-02 12:44:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-02 12:44:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 454. [2021-11-02 12:44:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 443 states have (on average 1.142212189616253) internal successors, (506), 453 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 506 transitions. [2021-11-02 12:44:06,309 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 506 transitions. Word has length 100 [2021-11-02 12:44:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:44:06,310 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 506 transitions. [2021-11-02 12:44:06,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 506 transitions. [2021-11-02 12:44:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:44:06,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:44:06,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:44:06,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 12:44:06,313 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:44:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:44:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -929854388, now seen corresponding path program 1 times [2021-11-02 12:44:06,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:44:06,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557705851] [2021-11-02 12:44:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:44:06,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:44:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:44:06,789 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 12:44:06,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:44:06,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557705851] [2021-11-02 12:44:06,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557705851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:44:06,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:44:06,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:44:06,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428451264] [2021-11-02 12:44:06,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:44:06,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:44:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:44:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:44:06,791 INFO L87 Difference]: Start difference. First operand 454 states and 506 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:08,836 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 12:44:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:44:14,173 INFO L93 Difference]: Finished difference Result 741 states and 820 transitions. [2021-11-02 12:44:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:44:14,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:44:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:44:14,176 INFO L225 Difference]: With dead ends: 741 [2021-11-02 12:44:14,176 INFO L226 Difference]: Without dead ends: 733 [2021-11-02 12:44:14,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 599.32ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:44:14,177 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 277 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6352.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.58ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6883.77ms IncrementalHoareTripleChecker+Time [2021-11-02 12:44:14,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 0 Invalid, 1702 Unknown, 0 Unchecked, 11.58ms Time], IncrementalHoareTripleChecker [95 Valid, 1606 Invalid, 1 Unknown, 0 Unchecked, 6883.77ms Time] [2021-11-02 12:44:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-11-02 12:44:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 470. [2021-11-02 12:44:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 459 states have (on average 1.1372549019607843) internal successors, (522), 469 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 522 transitions. [2021-11-02 12:44:14,198 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 522 transitions. Word has length 102 [2021-11-02 12:44:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:44:14,199 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 522 transitions. [2021-11-02 12:44:14,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 522 transitions. [2021-11-02 12:44:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:44:14,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:44:14,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:14,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 12:44:14,200 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:44:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:44:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1739201014, now seen corresponding path program 1 times [2021-11-02 12:44:14,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:44:14,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864354046] [2021-11-02 12:44:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:44:14,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:44:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:44:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:44:14,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:44:14,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864354046] [2021-11-02 12:44:14,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864354046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:44:14,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:44:14,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:44:14,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447479407] [2021-11-02 12:44:14,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:44:14,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:44:14,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:44:14,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:44:14,653 INFO L87 Difference]: Start difference. First operand 470 states and 522 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:16,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:44:25,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:44:25,212 INFO L93 Difference]: Finished difference Result 1010 states and 1120 transitions. [2021-11-02 12:44:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:44:25,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:44:25,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:44:25,215 INFO L225 Difference]: With dead ends: 1010 [2021-11-02 12:44:25,215 INFO L226 Difference]: Without dead ends: 673 [2021-11-02 12:44:25,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 872.98ms TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:44:25,216 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 2654 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9150.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.19ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9750.62ms IncrementalHoareTripleChecker+Time [2021-11-02 12:44:25,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 2674 Unknown, 0 Unchecked, 22.19ms Time], IncrementalHoareTripleChecker [19 Valid, 2654 Invalid, 1 Unknown, 0 Unchecked, 9750.62ms Time] [2021-11-02 12:44:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-02 12:44:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 516. [2021-11-02 12:44:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 505 states have (on average 1.1267326732673266) internal successors, (569), 515 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 569 transitions. [2021-11-02 12:44:25,235 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 569 transitions. Word has length 102 [2021-11-02 12:44:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:44:25,236 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 569 transitions. [2021-11-02 12:44:25,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 569 transitions. [2021-11-02 12:44:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:44:25,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:44:25,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:44:25,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 12:44:25,237 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:44:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:44:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 399905525, now seen corresponding path program 1 times [2021-11-02 12:44:25,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:44:25,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686341456] [2021-11-02 12:44:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:44:25,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:44:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:44:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:44:26,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:44:26,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686341456] [2021-11-02 12:44:26,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686341456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:44:26,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:44:26,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:44:26,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437403624] [2021-11-02 12:44:26,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:44:26,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:44:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:44:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:44:26,224 INFO L87 Difference]: Start difference. First operand 516 states and 569 transitions. Second operand has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 13 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:28,273 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 12:44:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:44:37,663 INFO L93 Difference]: Finished difference Result 805 states and 888 transitions. [2021-11-02 12:44:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:44:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 13 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:44:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:44:37,666 INFO L225 Difference]: With dead ends: 805 [2021-11-02 12:44:37,666 INFO L226 Difference]: Without dead ends: 659 [2021-11-02 12:44:37,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1358.83ms TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-11-02 12:44:37,666 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1021 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9567.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.74ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10440.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:44:37,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 0 Invalid, 2738 Unknown, 0 Unchecked, 28.74ms Time], IncrementalHoareTripleChecker [26 Valid, 2711 Invalid, 1 Unknown, 0 Unchecked, 10440.35ms Time] [2021-11-02 12:44:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-02 12:44:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 516. [2021-11-02 12:44:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 505 states have (on average 1.1247524752475249) internal successors, (568), 515 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 12:44:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 568 transitions. [2021-11-02 12:44:37,688 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 568 transitions. Word has length 102 [2021-11-02 12:44:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:44:37,688 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 568 transitions. [2021-11-02 12:44:37,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 13 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 568 transitions. [2021-11-02 12:44:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:44:37,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:44:37,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:44:37,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 12:44:37,690 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:44:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:44:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1921020086, now seen corresponding path program 1 times [2021-11-02 12:44:37,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:44:37,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921781205] [2021-11-02 12:44:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:44:37,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:44:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:44:47,418 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 12:44:47,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:44:47,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921781205] [2021-11-02 12:44:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921781205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:44:47,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:44:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 12:44:47,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802274736] [2021-11-02 12:44:47,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 12:44:47,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:44:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 12:44:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:44:47,419 INFO L87 Difference]: Start difference. First operand 516 states and 568 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:44:49,469 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 12:45:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:45:08,454 INFO L93 Difference]: Finished difference Result 1100 states and 1212 transitions. [2021-11-02 12:45:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-02 12:45:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:45:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:45:08,457 INFO L225 Difference]: With dead ends: 1100 [2021-11-02 12:45:08,457 INFO L226 Difference]: Without dead ends: 1098 [2021-11-02 12:45:08,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 6945.51ms TimeCoverageRelationStatistics Valid=1525, Invalid=5615, Unknown=0, NotChecked=0, Total=7140 [2021-11-02 12:45:08,459 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3249 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 373 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13746.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.55ms SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14742.67ms IncrementalHoareTripleChecker+Time [2021-11-02 12:45:08,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3249 Valid, 0 Invalid, 4414 Unknown, 0 Unchecked, 50.55ms Time], IncrementalHoareTripleChecker [373 Valid, 4040 Invalid, 1 Unknown, 0 Unchecked, 14742.67ms Time] [2021-11-02 12:45:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-02 12:45:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 518. [2021-11-02 12:45:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 507 states have (on average 1.1282051282051282) internal successors, (572), 517 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:45:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 572 transitions. [2021-11-02 12:45:08,481 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 572 transitions. Word has length 102 [2021-11-02 12:45:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:45:08,481 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 572 transitions. [2021-11-02 12:45:08,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:45:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 572 transitions. [2021-11-02 12:45:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:45:08,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:45:08,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:45:08,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 12:45:08,482 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:45:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:45:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash 218086453, now seen corresponding path program 1 times [2021-11-02 12:45:08,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:45:08,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517932605] [2021-11-02 12:45:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:45:08,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:45:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:45:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:45:10,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:45:10,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517932605] [2021-11-02 12:45:10,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517932605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:45:10,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:45:10,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 12:45:10,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506445711] [2021-11-02 12:45:10,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:45:10,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:45:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:45:10,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:45:10,247 INFO L87 Difference]: Start difference. First operand 518 states and 572 transitions. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:45:13,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:45:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:45:39,349 INFO L93 Difference]: Finished difference Result 1010 states and 1111 transitions. [2021-11-02 12:45:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 12:45:39,349 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:45:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:45:39,351 INFO L225 Difference]: With dead ends: 1010 [2021-11-02 12:45:39,351 INFO L226 Difference]: Without dead ends: 886 [2021-11-02 12:45:39,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5659.37ms TimeCoverageRelationStatistics Valid=599, Invalid=2593, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 12:45:39,352 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1428 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 7086 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22861.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.97ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 7086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24360.08ms IncrementalHoareTripleChecker+Time [2021-11-02 12:45:39,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 0 Invalid, 7153 Unknown, 0 Unchecked, 72.97ms Time], IncrementalHoareTripleChecker [66 Valid, 7086 Invalid, 1 Unknown, 0 Unchecked, 24360.08ms Time] [2021-11-02 12:45:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-02 12:45:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 527. [2021-11-02 12:45:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 516 states have (on average 1.12984496124031) internal successors, (583), 526 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:45:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 583 transitions. [2021-11-02 12:45:39,376 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 583 transitions. Word has length 102 [2021-11-02 12:45:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:45:39,376 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 583 transitions. [2021-11-02 12:45:39,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:45:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 583 transitions. [2021-11-02 12:45:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:45:39,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:45:39,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:45:39,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 12:45:39,378 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:45:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:45:39,378 INFO L85 PathProgramCache]: Analyzing trace with hash 476251891, now seen corresponding path program 1 times [2021-11-02 12:45:39,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:45:39,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777819530] [2021-11-02 12:45:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:45:39,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:45:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:45:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:45:50,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:45:50,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777819530] [2021-11-02 12:45:50,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777819530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:45:50,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:45:50,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-02 12:45:50,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011975686] [2021-11-02 12:45:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 12:45:50,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:45:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 12:45:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:45:50,491 INFO L87 Difference]: Start difference. First operand 527 states and 583 transitions. Second operand has 25 states, 25 states have (on average 4.08) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:45:53,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:46:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:46:04,978 INFO L93 Difference]: Finished difference Result 797 states and 879 transitions. [2021-11-02 12:46:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 12:46:04,978 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:46:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:46:04,980 INFO L225 Difference]: With dead ends: 797 [2021-11-02 12:46:04,980 INFO L226 Difference]: Without dead ends: 667 [2021-11-02 12:46:04,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 6136.31ms TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 12:46:04,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3009 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9054.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3009 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.86ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9825.95ms IncrementalHoareTripleChecker+Time [2021-11-02 12:46:04,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3009 Valid, 0 Invalid, 2159 Unknown, 0 Unchecked, 30.86ms Time], IncrementalHoareTripleChecker [72 Valid, 2086 Invalid, 1 Unknown, 0 Unchecked, 9825.95ms Time] [2021-11-02 12:46:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-02 12:46:05,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 511. [2021-11-02 12:46:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 500 states have (on average 1.124) internal successors, (562), 510 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:46:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 562 transitions. [2021-11-02 12:46:05,006 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 562 transitions. Word has length 102 [2021-11-02 12:46:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:46:05,006 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 562 transitions. [2021-11-02 12:46:05,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:46:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 562 transitions. [2021-11-02 12:46:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:46:05,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:46:05,007 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, 1, 1, 1, 1, 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 12:46:05,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 12:46:05,008 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:46:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:46:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash -534865359, now seen corresponding path program 1 times [2021-11-02 12:46:05,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:46:05,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226636927] [2021-11-02 12:46:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:46:05,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:46:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:46:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:46:13,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:46:13,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226636927] [2021-11-02 12:46:13,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226636927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:46:13,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:46:13,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-02 12:46:13,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329124713] [2021-11-02 12:46:13,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 12:46:13,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:46:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 12:46:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:46:13,342 INFO L87 Difference]: Start difference. First operand 511 states and 562 transitions. Second operand has 25 states, 25 states have (on average 4.08) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:46:16,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:46:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:46:28,514 INFO L93 Difference]: Finished difference Result 854 states and 944 transitions. [2021-11-02 12:46:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 12:46:28,515 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:46:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:46:28,517 INFO L225 Difference]: With dead ends: 854 [2021-11-02 12:46:28,517 INFO L226 Difference]: Without dead ends: 737 [2021-11-02 12:46:28,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 8351.01ms TimeCoverageRelationStatistics Valid=500, Invalid=1570, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 12:46:28,518 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4034 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7723.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4034 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.75ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8415.57ms IncrementalHoareTripleChecker+Time [2021-11-02 12:46:28,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4034 Valid, 0 Invalid, 1716 Unknown, 0 Unchecked, 23.75ms Time], IncrementalHoareTripleChecker [157 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 8415.57ms Time] [2021-11-02 12:46:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-02 12:46:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 509. [2021-11-02 12:46:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 498 states have (on average 1.1204819277108433) internal successors, (558), 508 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:46:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 558 transitions. [2021-11-02 12:46:28,544 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 558 transitions. Word has length 102 [2021-11-02 12:46:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:46:28,544 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 558 transitions. [2021-11-02 12:46:28,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:46:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 558 transitions. [2021-11-02 12:46:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 12:46:28,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:46:28,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:46:28,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 12:46:28,566 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:46:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:46:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1214923729, now seen corresponding path program 1 times [2021-11-02 12:46:28,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:46:28,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079000616] [2021-11-02 12:46:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:46:28,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:46:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:46:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:46:33,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:46:33,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079000616] [2021-11-02 12:46:33,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079000616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:46:33,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:46:33,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-02 12:46:33,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930373451] [2021-11-02 12:46:33,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-02 12:46:33,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:46:33,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-02 12:46:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2021-11-02 12:46:33,382 INFO L87 Difference]: Start difference. First operand 509 states and 558 transitions. Second operand has 29 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 29 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:46:36,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:47:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:47:16,942 INFO L93 Difference]: Finished difference Result 1012 states and 1120 transitions. [2021-11-02 12:47:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-02 12:47:16,943 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 29 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-02 12:47:16,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:47:16,945 INFO L225 Difference]: With dead ends: 1012 [2021-11-02 12:47:16,946 INFO L226 Difference]: Without dead ends: 897 [2021-11-02 12:47:16,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 12928.04ms TimeCoverageRelationStatistics Valid=1296, Invalid=6894, Unknown=0, NotChecked=0, Total=8190 [2021-11-02 12:47:16,949 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1427 mSDsluCounter, 5744 mSDsCounter, 0 mSdLazyCounter, 9403 mSolverCounterSat, 130 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30485.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.21ms SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 9403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32402.84ms IncrementalHoareTripleChecker+Time [2021-11-02 12:47:16,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 0 Invalid, 9534 Unknown, 0 Unchecked, 98.21ms Time], IncrementalHoareTripleChecker [130 Valid, 9403 Invalid, 1 Unknown, 0 Unchecked, 32402.84ms Time] [2021-11-02 12:47:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-11-02 12:47:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 523. [2021-11-02 12:47:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 512 states have (on average 1.119140625) internal successors, (573), 522 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 573 transitions. [2021-11-02 12:47:17,004 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 573 transitions. Word has length 102 [2021-11-02 12:47:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:47:17,004 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 573 transitions. [2021-11-02 12:47:17,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 29 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 573 transitions. [2021-11-02 12:47:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 12:47:17,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:47:17,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:47:17,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 12:47:17,006 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:47:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:47:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash -760183441, now seen corresponding path program 1 times [2021-11-02 12:47:17,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:47:17,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917600344] [2021-11-02 12:47:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:47:17,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:47:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:47:17,550 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 12:47:17,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:47:17,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917600344] [2021-11-02 12:47:17,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917600344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:47:17,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:47:17,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:47:17,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375695964] [2021-11-02 12:47:17,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:47:17,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:47:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:47:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:47:17,552 INFO L87 Difference]: Start difference. First operand 523 states and 573 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:19,599 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 12:47:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:47:25,300 INFO L93 Difference]: Finished difference Result 868 states and 962 transitions. [2021-11-02 12:47:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:47:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-02 12:47:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:47:25,303 INFO L225 Difference]: With dead ends: 868 [2021-11-02 12:47:25,303 INFO L226 Difference]: Without dead ends: 753 [2021-11-02 12:47:25,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 835.06ms TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:47:25,304 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 257 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6549.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.01ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7066.76ms IncrementalHoareTripleChecker+Time [2021-11-02 12:47:25,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 0 Invalid, 1637 Unknown, 0 Unchecked, 13.01ms Time], IncrementalHoareTripleChecker [20 Valid, 1616 Invalid, 1 Unknown, 0 Unchecked, 7066.76ms Time] [2021-11-02 12:47:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-02 12:47:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 568. [2021-11-02 12:47:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 557 states have (on average 1.1131059245960502) internal successors, (620), 567 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 620 transitions. [2021-11-02 12:47:25,335 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 620 transitions. Word has length 103 [2021-11-02 12:47:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:47:25,335 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 620 transitions. [2021-11-02 12:47:25,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 620 transitions. [2021-11-02 12:47:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 12:47:25,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:47:25,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:47:25,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 12:47:25,338 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:47:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:47:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash 778156589, now seen corresponding path program 1 times [2021-11-02 12:47:25,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:47:25,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103437388] [2021-11-02 12:47:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:47:25,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:47:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:47:36,241 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 12:47:36,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:47:36,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103437388] [2021-11-02 12:47:36,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103437388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:47:36,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:47:36,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 12:47:36,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098151015] [2021-11-02 12:47:36,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 12:47:36,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:47:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 12:47:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:47:36,242 INFO L87 Difference]: Start difference. First operand 568 states and 620 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:38,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:47:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:47:49,989 INFO L93 Difference]: Finished difference Result 797 states and 875 transitions. [2021-11-02 12:47:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 12:47:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-02 12:47:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:47:49,992 INFO L225 Difference]: With dead ends: 797 [2021-11-02 12:47:49,992 INFO L226 Difference]: Without dead ends: 682 [2021-11-02 12:47:49,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 5496.08ms TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 12:47:49,993 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1982 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8625.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.64ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9369.99ms IncrementalHoareTripleChecker+Time [2021-11-02 12:47:49,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 0 Invalid, 2037 Unknown, 0 Unchecked, 30.64ms Time], IncrementalHoareTripleChecker [83 Valid, 1953 Invalid, 1 Unknown, 0 Unchecked, 9369.99ms Time] [2021-11-02 12:47:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-02 12:47:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 523. [2021-11-02 12:47:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 512 states have (on average 1.1171875) internal successors, (572), 522 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 572 transitions. [2021-11-02 12:47:50,021 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 572 transitions. Word has length 103 [2021-11-02 12:47:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:47:50,022 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 572 transitions. [2021-11-02 12:47:50,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 572 transitions. [2021-11-02 12:47:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 12:47:50,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:47:50,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:47:50,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 12:47:50,023 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:47:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:47:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 997152904, now seen corresponding path program 1 times [2021-11-02 12:47:50,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:47:50,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423901113] [2021-11-02 12:47:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:47:50,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:47:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:47:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:47:54,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:47:54,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423901113] [2021-11-02 12:47:54,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423901113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:47:54,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:47:54,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 12:47:54,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950019900] [2021-11-02 12:47:54,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 12:47:54,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:47:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 12:47:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:47:54,610 INFO L87 Difference]: Start difference. First operand 523 states and 572 transitions. Second operand has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:47:56,656 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 12:48:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:48:17,180 INFO L93 Difference]: Finished difference Result 894 states and 980 transitions. [2021-11-02 12:48:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-02 12:48:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-02 12:48:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:48:17,183 INFO L225 Difference]: With dead ends: 894 [2021-11-02 12:48:17,183 INFO L226 Difference]: Without dead ends: 892 [2021-11-02 12:48:17,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 10189.13ms TimeCoverageRelationStatistics Valid=1339, Invalid=4981, Unknown=0, NotChecked=0, Total=6320 [2021-11-02 12:48:17,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3720 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 433 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12659.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.98ms SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13557.51ms IncrementalHoareTripleChecker+Time [2021-11-02 12:48:17,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3720 Valid, 0 Invalid, 4039 Unknown, 0 Unchecked, 47.98ms Time], IncrementalHoareTripleChecker [433 Valid, 3605 Invalid, 1 Unknown, 0 Unchecked, 13557.51ms Time] [2021-11-02 12:48:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-02 12:48:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 509. [2021-11-02 12:48:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 498 states have (on average 1.1184738955823292) internal successors, (557), 508 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:48:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 557 transitions. [2021-11-02 12:48:17,215 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 557 transitions. Word has length 104 [2021-11-02 12:48:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:48:17,216 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 557 transitions. [2021-11-02 12:48:17,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:48:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 557 transitions. [2021-11-02 12:48:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 12:48:17,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:48:17,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:48:17,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 12:48:17,217 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:48:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:48:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash 622001837, now seen corresponding path program 1 times [2021-11-02 12:48:17,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:48:17,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883420346] [2021-11-02 12:48:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:48:17,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:48:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:48:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:48:18,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:48:18,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883420346] [2021-11-02 12:48:18,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883420346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:48:18,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:48:18,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:48:18,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772518450] [2021-11-02 12:48:18,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:48:18,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:48:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:48:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:48:18,348 INFO L87 Difference]: Start difference. First operand 509 states and 557 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:48:21,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:48:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:48:34,032 INFO L93 Difference]: Finished difference Result 798 states and 871 transitions. [2021-11-02 12:48:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:48:34,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-02 12:48:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:48:34,034 INFO L225 Difference]: With dead ends: 798 [2021-11-02 12:48:34,034 INFO L226 Difference]: Without dead ends: 546 [2021-11-02 12:48:34,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2767.43ms TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2021-11-02 12:48:34,035 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 790 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 3172 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12515.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.80ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13439.29ms IncrementalHoareTripleChecker+Time [2021-11-02 12:48:34,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 0 Invalid, 3234 Unknown, 0 Unchecked, 36.80ms Time], IncrementalHoareTripleChecker [61 Valid, 3172 Invalid, 1 Unknown, 0 Unchecked, 13439.29ms Time] [2021-11-02 12:48:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-02 12:48:34,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 509. [2021-11-02 12:48:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 498 states have (on average 1.1164658634538152) internal successors, (556), 508 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:48:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 556 transitions. [2021-11-02 12:48:34,065 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 556 transitions. Word has length 105 [2021-11-02 12:48:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:48:34,065 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 556 transitions. [2021-11-02 12:48:34,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:48:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 556 transitions. [2021-11-02 12:48:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 12:48:34,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:48:34,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:48:34,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 12:48:34,066 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:48:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:48:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1498020843, now seen corresponding path program 1 times [2021-11-02 12:48:34,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:48:34,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589007712] [2021-11-02 12:48:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:48:34,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:48:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:48:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:48:44,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:48:44,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589007712] [2021-11-02 12:48:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589007712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:48:44,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:48:44,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-02 12:48:44,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353045292] [2021-11-02 12:48:44,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 12:48:44,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:48:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 12:48:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 12:48:44,068 INFO L87 Difference]: Start difference. First operand 509 states and 556 transitions. Second operand has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:48:46,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:49:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:49:17,824 INFO L93 Difference]: Finished difference Result 902 states and 989 transitions. [2021-11-02 12:49:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 12:49:17,825 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-02 12:49:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:49:17,826 INFO L225 Difference]: With dead ends: 902 [2021-11-02 12:49:17,826 INFO L226 Difference]: Without dead ends: 787 [2021-11-02 12:49:17,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 18648.15ms TimeCoverageRelationStatistics Valid=1181, Invalid=4221, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 12:49:17,828 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3449 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 4450 mSolverCounterSat, 169 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16857.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.70ms SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18106.87ms IncrementalHoareTripleChecker+Time [2021-11-02 12:49:17,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3449 Valid, 0 Invalid, 4620 Unknown, 0 Unchecked, 62.70ms Time], IncrementalHoareTripleChecker [169 Valid, 4450 Invalid, 1 Unknown, 0 Unchecked, 18106.87ms Time] [2021-11-02 12:49:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-02 12:49:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 567. [2021-11-02 12:49:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 557 states have (on average 1.1274685816876122) internal successors, (628), 566 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 628 transitions. [2021-11-02 12:49:17,863 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 628 transitions. Word has length 105 [2021-11-02 12:49:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:49:17,863 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 628 transitions. [2021-11-02 12:49:17,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 628 transitions. [2021-11-02 12:49:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 12:49:17,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:49:17,864 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:17,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 12:49:17,864 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:49:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:49:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1320525955, now seen corresponding path program 2 times [2021-11-02 12:49:17,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:49:17,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595034890] [2021-11-02 12:49:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:49:17,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:49:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:49:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 231 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:49:29,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:49:29,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595034890] [2021-11-02 12:49:29,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595034890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:49:29,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600248286] [2021-11-02 12:49:29,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 12:49:29,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:49:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:49:29,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:49:29,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 12:49:30,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 12:49:30,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 12:49:30,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-02 12:49:30,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:49:31,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-02 12:49:32,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-02 12:49:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-11-02 12:49:32,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:49:32,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600248286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:49:32,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 12:49:32,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [42] total 48 [2021-11-02 12:49:32,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576544611] [2021-11-02 12:49:32,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:49:32,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:49:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:49:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 12:49:32,439 INFO L87 Difference]: Start difference. First operand 567 states and 628 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:35,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:49:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:49:38,886 INFO L93 Difference]: Finished difference Result 745 states and 826 transitions. [2021-11-02 12:49:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:49:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-02 12:49:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:49:38,888 INFO L225 Difference]: With dead ends: 745 [2021-11-02 12:49:38,888 INFO L226 Difference]: Without dead ends: 567 [2021-11-02 12:49:38,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 6852.49ms TimeCoverageRelationStatistics Valid=462, Invalid=2190, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 12:49:38,889 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 768 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5532.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.49ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6075.88ms IncrementalHoareTripleChecker+Time [2021-11-02 12:49:38,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 0 Invalid, 931 Unknown, 0 Unchecked, 11.49ms Time], IncrementalHoareTripleChecker [8 Valid, 922 Invalid, 1 Unknown, 0 Unchecked, 6075.88ms Time] [2021-11-02 12:49:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-02 12:49:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-11-02 12:49:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 557 states have (on average 1.1238779174147218) internal successors, (626), 566 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 626 transitions. [2021-11-02 12:49:38,925 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 626 transitions. Word has length 110 [2021-11-02 12:49:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:49:38,927 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 626 transitions. [2021-11-02 12:49:38,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:38,927 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 626 transitions. [2021-11-02 12:49:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 12:49:38,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:49:38,928 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:38,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-02 12:49:39,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:49:39,130 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:49:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:49:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 320703609, now seen corresponding path program 1 times [2021-11-02 12:49:39,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:49:39,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76348464] [2021-11-02 12:49:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:49:39,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:49:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:49:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-11-02 12:49:44,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:49:44,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76348464] [2021-11-02 12:49:44,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76348464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:49:44,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:49:44,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:49:44,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747437034] [2021-11-02 12:49:44,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:49:44,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:49:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:49:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:49:44,221 INFO L87 Difference]: Start difference. First operand 567 states and 626 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:47,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:49:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:49:53,280 INFO L93 Difference]: Finished difference Result 674 states and 746 transitions. [2021-11-02 12:49:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:49:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-02 12:49:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:49:53,282 INFO L225 Difference]: With dead ends: 674 [2021-11-02 12:49:53,282 INFO L226 Difference]: Without dead ends: 496 [2021-11-02 12:49:53,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1689.67ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:49:53,282 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 291 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7172.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.59ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7795.34ms IncrementalHoareTripleChecker+Time [2021-11-02 12:49:53,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 0 Invalid, 1412 Unknown, 0 Unchecked, 15.59ms Time], IncrementalHoareTripleChecker [15 Valid, 1396 Invalid, 1 Unknown, 0 Unchecked, 7795.34ms Time] [2021-11-02 12:49:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-02 12:49:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-11-02 12:49:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 487 states have (on average 1.1232032854209446) internal successors, (547), 495 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 547 transitions. [2021-11-02 12:49:53,309 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 547 transitions. Word has length 113 [2021-11-02 12:49:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:49:53,310 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 547 transitions. [2021-11-02 12:49:53,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 547 transitions. [2021-11-02 12:49:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 12:49:53,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:49:53,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:49:53,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 12:49:53,311 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:49:53,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:49:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1598132722, now seen corresponding path program 1 times [2021-11-02 12:49:53,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:49:53,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48585132] [2021-11-02 12:49:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:49:53,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:49:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:49:56,959 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 12:49:56,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:49:56,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48585132] [2021-11-02 12:49:56,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48585132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:49:56,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:49:56,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:49:56,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442991795] [2021-11-02 12:49:56,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:49:56,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:49:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:49:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:49:56,960 INFO L87 Difference]: Start difference. First operand 496 states and 547 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:49:59,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:50:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:50:07,132 INFO L93 Difference]: Finished difference Result 668 states and 730 transitions. [2021-11-02 12:50:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:50:07,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-02 12:50:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:50:07,134 INFO L225 Difference]: With dead ends: 668 [2021-11-02 12:50:07,134 INFO L226 Difference]: Without dead ends: 530 [2021-11-02 12:50:07,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2172.99ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:50:07,134 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1408 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8056.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.92ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8723.11ms IncrementalHoareTripleChecker+Time [2021-11-02 12:50:07,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1408 Valid, 0 Invalid, 1705 Unknown, 0 Unchecked, 19.92ms Time], IncrementalHoareTripleChecker [26 Valid, 1678 Invalid, 1 Unknown, 0 Unchecked, 8723.11ms Time] [2021-11-02 12:50:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-02 12:50:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 482. [2021-11-02 12:50:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 473 states have (on average 1.1141649048625792) internal successors, (527), 481 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 527 transitions. [2021-11-02 12:50:07,162 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 527 transitions. Word has length 119 [2021-11-02 12:50:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:50:07,162 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 527 transitions. [2021-11-02 12:50:07,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 527 transitions. [2021-11-02 12:50:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 12:50:07,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:50:07,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:50:07,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-02 12:50:07,163 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:50:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:50:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1016243970, now seen corresponding path program 1 times [2021-11-02 12:50:07,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:50:07,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49378560] [2021-11-02 12:50:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:50:07,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:50:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:50:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:50:07,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:50:07,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49378560] [2021-11-02 12:50:07,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49378560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:50:07,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:50:07,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:50:07,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568930856] [2021-11-02 12:50:07,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:50:07,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:50:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:50:07,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:50:07,771 INFO L87 Difference]: Start difference. First operand 482 states and 527 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:10,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:50:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:50:17,910 INFO L93 Difference]: Finished difference Result 956 states and 1076 transitions. [2021-11-02 12:50:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:50:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-02 12:50:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:50:17,912 INFO L225 Difference]: With dead ends: 956 [2021-11-02 12:50:17,912 INFO L226 Difference]: Without dead ends: 813 [2021-11-02 12:50:17,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1559.09ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:50:17,913 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 562 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8082.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.10ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8760.11ms IncrementalHoareTripleChecker+Time [2021-11-02 12:50:17,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 0 Invalid, 1735 Unknown, 0 Unchecked, 18.10ms Time], IncrementalHoareTripleChecker [31 Valid, 1703 Invalid, 1 Unknown, 0 Unchecked, 8760.11ms Time] [2021-11-02 12:50:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-02 12:50:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 536. [2021-11-02 12:50:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 527 states have (on average 1.110056925996205) internal successors, (585), 535 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 585 transitions. [2021-11-02 12:50:17,946 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 585 transitions. Word has length 119 [2021-11-02 12:50:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:50:17,946 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 585 transitions. [2021-11-02 12:50:17,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 585 transitions. [2021-11-02 12:50:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 12:50:17,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:50:17,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:50:17,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 12:50:17,947 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:50:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:50:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1696302340, now seen corresponding path program 1 times [2021-11-02 12:50:17,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:50:17,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048261613] [2021-11-02 12:50:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:50:17,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:50:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:50:22,084 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 12:50:22,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:50:22,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048261613] [2021-11-02 12:50:22,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048261613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:50:22,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:50:22,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:50:22,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616221075] [2021-11-02 12:50:22,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:50:22,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:50:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:50:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:50:22,086 INFO L87 Difference]: Start difference. First operand 536 states and 585 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:24,131 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 12:50:27,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:50:27,700 INFO L93 Difference]: Finished difference Result 679 states and 752 transitions. [2021-11-02 12:50:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:50:27,701 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-02 12:50:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:50:27,702 INFO L225 Difference]: With dead ends: 679 [2021-11-02 12:50:27,702 INFO L226 Difference]: Without dead ends: 527 [2021-11-02 12:50:27,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 995.63ms TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:50:27,703 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 774 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4643.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.54ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5070.13ms IncrementalHoareTripleChecker+Time [2021-11-02 12:50:27,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 0 Invalid, 885 Unknown, 0 Unchecked, 10.54ms Time], IncrementalHoareTripleChecker [23 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 5070.13ms Time] [2021-11-02 12:50:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-11-02 12:50:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2021-11-02 12:50:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 518 states have (on average 1.0965250965250966) internal successors, (568), 526 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 12:50:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 568 transitions. [2021-11-02 12:50:27,734 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 568 transitions. Word has length 119 [2021-11-02 12:50:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:50:27,734 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 568 transitions. [2021-11-02 12:50:27,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 568 transitions. [2021-11-02 12:50:27,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 12:50:27,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:50:27,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:50:27,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-02 12:50:27,736 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:50:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:50:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1716961340, now seen corresponding path program 1 times [2021-11-02 12:50:27,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:50:27,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660255423] [2021-11-02 12:50:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:50:27,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:50:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:50:35,626 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 12:50:35,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:50:35,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660255423] [2021-11-02 12:50:35,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660255423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:50:35,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:50:35,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 12:50:35,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157401284] [2021-11-02 12:50:35,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:50:35,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:50:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:50:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:50:35,628 INFO L87 Difference]: Start difference. First operand 527 states and 568 transitions. Second operand has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 21 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:50:37,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:51:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:51:03,710 INFO L93 Difference]: Finished difference Result 779 states and 835 transitions. [2021-11-02 12:51:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 12:51:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 21 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-02 12:51:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:51:03,712 INFO L225 Difference]: With dead ends: 779 [2021-11-02 12:51:03,712 INFO L226 Difference]: Without dead ends: 705 [2021-11-02 12:51:03,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 6900.21ms TimeCoverageRelationStatistics Valid=366, Invalid=1986, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 12:51:03,713 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 651 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 6324 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21158.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.82ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 6324 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22450.04ms IncrementalHoareTripleChecker+Time [2021-11-02 12:51:03,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 0 Invalid, 6385 Unknown, 0 Unchecked, 70.82ms Time], IncrementalHoareTripleChecker [60 Valid, 6324 Invalid, 1 Unknown, 0 Unchecked, 22450.04ms Time] [2021-11-02 12:51:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-02 12:51:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 509. [2021-11-02 12:51:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 500 states have (on average 1.098) internal successors, (549), 508 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 549 transitions. [2021-11-02 12:51:03,748 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 549 transitions. Word has length 119 [2021-11-02 12:51:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:51:03,748 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 549 transitions. [2021-11-02 12:51:03,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 21 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 549 transitions. [2021-11-02 12:51:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 12:51:03,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:03,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:51:03,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-02 12:51:03,749 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1960633019, now seen corresponding path program 1 times [2021-11-02 12:51:03,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:03,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831210447] [2021-11-02 12:51:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:03,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:04,139 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 12:51:04,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:04,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831210447] [2021-11-02 12:51:04,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831210447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:04,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:04,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:51:04,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578168765] [2021-11-02 12:51:04,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:51:04,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:51:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:51:04,141 INFO L87 Difference]: Start difference. First operand 509 states and 549 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:06,185 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 12:51:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:51:10,632 INFO L93 Difference]: Finished difference Result 816 states and 905 transitions. [2021-11-02 12:51:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:51:10,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-02 12:51:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:51:10,635 INFO L225 Difference]: With dead ends: 816 [2021-11-02 12:51:10,635 INFO L226 Difference]: Without dead ends: 670 [2021-11-02 12:51:10,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 611.54ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:51:10,635 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 471 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5496.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5964.04ms IncrementalHoareTripleChecker+Time [2021-11-02 12:51:10,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 0 Invalid, 1202 Unknown, 0 Unchecked, 11.91ms Time], IncrementalHoareTripleChecker [20 Valid, 1181 Invalid, 1 Unknown, 0 Unchecked, 5964.04ms Time] [2021-11-02 12:51:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-02 12:51:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 530. [2021-11-02 12:51:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 521 states have (on average 1.0940499040307101) internal successors, (570), 529 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 570 transitions. [2021-11-02 12:51:10,668 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 570 transitions. Word has length 121 [2021-11-02 12:51:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:51:10,668 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 570 transitions. [2021-11-02 12:51:10,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 570 transitions. [2021-11-02 12:51:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 12:51:10,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:10,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:51:10,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-02 12:51:10,669 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash -424652035, now seen corresponding path program 1 times [2021-11-02 12:51:10,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:10,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276921483] [2021-11-02 12:51:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:10,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:16,558 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 12:51:16,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:16,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276921483] [2021-11-02 12:51:16,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276921483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:16,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:16,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 12:51:16,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521758516] [2021-11-02 12:51:16,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 12:51:16,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 12:51:16,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:51:16,559 INFO L87 Difference]: Start difference. First operand 530 states and 570 transitions. Second operand has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:18,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:51:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:51:33,258 INFO L93 Difference]: Finished difference Result 684 states and 723 transitions. [2021-11-02 12:51:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-02 12:51:33,259 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-02 12:51:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:51:33,261 INFO L225 Difference]: With dead ends: 684 [2021-11-02 12:51:33,261 INFO L226 Difference]: Without dead ends: 682 [2021-11-02 12:51:33,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 6675.77ms TimeCoverageRelationStatistics Valid=1244, Invalid=4306, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 12:51:33,262 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2190 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 273 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9997.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.18ms SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10845.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:51:33,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2190 Valid, 0 Invalid, 2974 Unknown, 0 Unchecked, 36.18ms Time], IncrementalHoareTripleChecker [273 Valid, 2700 Invalid, 1 Unknown, 0 Unchecked, 10845.35ms Time] [2021-11-02 12:51:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-02 12:51:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 523. [2021-11-02 12:51:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 514 states have (on average 1.093385214007782) internal successors, (562), 522 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 562 transitions. [2021-11-02 12:51:33,294 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 562 transitions. Word has length 121 [2021-11-02 12:51:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:51:33,295 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 562 transitions. [2021-11-02 12:51:33,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 562 transitions. [2021-11-02 12:51:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 12:51:33,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:33,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:51:33,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-02 12:51:33,296 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -406344908, now seen corresponding path program 1 times [2021-11-02 12:51:33,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:33,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983881076] [2021-11-02 12:51:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:33,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:51:35,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:35,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983881076] [2021-11-02 12:51:35,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983881076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:35,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:35,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 12:51:35,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837417813] [2021-11-02 12:51:35,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 12:51:35,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 12:51:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:51:35,403 INFO L87 Difference]: Start difference. First operand 523 states and 562 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:37,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:00,489 INFO L93 Difference]: Finished difference Result 871 states and 937 transitions. [2021-11-02 12:52:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 12:52:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-02 12:52:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:00,491 INFO L225 Difference]: With dead ends: 871 [2021-11-02 12:52:00,491 INFO L226 Difference]: Without dead ends: 791 [2021-11-02 12:52:00,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 6153.49ms TimeCoverageRelationStatistics Valid=523, Invalid=2339, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 12:52:00,492 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1441 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 5758 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18997.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.57ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 5758 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20132.74ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:00,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 0 Invalid, 5828 Unknown, 0 Unchecked, 62.57ms Time], IncrementalHoareTripleChecker [69 Valid, 5758 Invalid, 1 Unknown, 0 Unchecked, 20132.74ms Time] [2021-11-02 12:52:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-11-02 12:52:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 560. [2021-11-02 12:52:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 551 states have (on average 1.0907441016333939) internal successors, (601), 559 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 601 transitions. [2021-11-02 12:52:00,529 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 601 transitions. Word has length 121 [2021-11-02 12:52:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:00,529 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 601 transitions. [2021-11-02 12:52:00,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 601 transitions. [2021-11-02 12:52:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 12:52:00,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:00,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:00,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-02 12:52:00,531 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash -847685050, now seen corresponding path program 1 times [2021-11-02 12:52:00,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:00,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777681212] [2021-11-02 12:52:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:00,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:09,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:09,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777681212] [2021-11-02 12:52:09,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777681212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:52:09,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726737888] [2021-11-02 12:52:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:09,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:52:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:52:09,542 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:52:09,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 12:52:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-02 12:52:10,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:52:13,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 12:52:13,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2021-11-02 12:52:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:52:13,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:52:13,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726737888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:13,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 12:52:13,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [34] total 43 [2021-11-02 12:52:13,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995160070] [2021-11-02 12:52:13,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:52:13,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:52:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1673, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 12:52:13,631 INFO L87 Difference]: Start difference. First operand 560 states and 601 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:16,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:21,898 INFO L93 Difference]: Finished difference Result 667 states and 723 transitions. [2021-11-02 12:52:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:52:21,899 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-02 12:52:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:21,900 INFO L225 Difference]: With dead ends: 667 [2021-11-02 12:52:21,900 INFO L226 Difference]: Without dead ends: 557 [2021-11-02 12:52:21,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 7148.93ms TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 12:52:21,901 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 755 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5961.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.30ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6514.16ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:21,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 0 Invalid, 1093 Unknown, 0 Unchecked, 10.30ms Time], IncrementalHoareTripleChecker [18 Valid, 1074 Invalid, 1 Unknown, 0 Unchecked, 6514.16ms Time] [2021-11-02 12:52:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-02 12:52:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2021-11-02 12:52:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 546 states have (on average 1.086080586080586) internal successors, (593), 554 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 593 transitions. [2021-11-02 12:52:21,936 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 593 transitions. Word has length 121 [2021-11-02 12:52:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:21,937 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 593 transitions. [2021-11-02 12:52:21,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 593 transitions. [2021-11-02 12:52:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 12:52:21,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:21,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:21,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 12:52:22,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-02 12:52:22,151 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1726207231, now seen corresponding path program 1 times [2021-11-02 12:52:22,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:22,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327326761] [2021-11-02 12:52:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:22,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:26,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:26,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327326761] [2021-11-02 12:52:26,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327326761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:52:26,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163009869] [2021-11-02 12:52:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:26,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:52:26,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:52:26,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:52:26,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 12:52:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:27,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-02 12:52:27,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:52:29,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-02 12:52:29,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-02 12:52:32,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-11-02 12:52:32,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-02 12:52:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 12:52:33,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:52:33,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163009869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:33,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 12:52:33,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [24] total 41 [2021-11-02 12:52:33,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285156828] [2021-11-02 12:52:33,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 12:52:33,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 12:52:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 12:52:33,240 INFO L87 Difference]: Start difference. First operand 555 states and 593 transitions. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:36,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15