./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_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 fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:26:27,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:26:27,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:26:27,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:26:27,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:26:27,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:26:27,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:26:27,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:26:27,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:26:27,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:26:27,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:26:27,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:26:27,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:26:27,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:26:27,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:26:27,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:26:27,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:26:27,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:26:27,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:26:27,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:26:27,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:26:27,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:26:27,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:26:27,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:26:27,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:26:27,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:26:27,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:26:27,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:26:27,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:26:27,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:26:27,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:26:27,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:26:27,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:26:27,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:26:27,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:26:27,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:26:27,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:26:27,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:26:27,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:26:27,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:26:27,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:26:27,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:26:27,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:26:27,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:26:27,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:26:27,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:26:27,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:26:27,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:26:27,868 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:26:27,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:26:27,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:26:27,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:26:27,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:26:27,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:26:27,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:26:27,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:26:27,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:26:27,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:26:27,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:26:27,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:26:27,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:26:27,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:26:27,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:26:27,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:26:27,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:26:27,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:26:27,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:26:27,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:26:27,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:26:27,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:26:27,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:26:27,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d [2021-11-05 13:26:28,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:26:28,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:26:28,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:26:28,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:26:28,132 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:26:28,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-05 13:26:28,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0cca5ec2/baaf8e54340148b8811f6da385223415/FLAG2c9778bcb [2021-11-05 13:26:28,749 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:26:28,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-05 13:26:28,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0cca5ec2/baaf8e54340148b8811f6da385223415/FLAG2c9778bcb [2021-11-05 13:26:29,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0cca5ec2/baaf8e54340148b8811f6da385223415 [2021-11-05 13:26:29,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:26:29,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:26:29,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:26:29,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:26:29,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:26:29,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:26:29" (1/1) ... [2021-11-05 13:26:29,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65751da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:29, skipping insertion in model container [2021-11-05 13:26:29,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:26:29" (1/1) ... [2021-11-05 13:26:29,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:26:29,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:26:29,482 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_linked_list_swap_contents_harness.i[4503,4516] [2021-11-05 13:26:29,486 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_linked_list_swap_contents_harness.i[4563,4576] [2021-11-05 13:26:29,498 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:26:29,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:26:29,902 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:29,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:26:30,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:26:30,138 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:26:30,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:26:30,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:26:30,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:26:30,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:26:30,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:26:30,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:26:30,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:26:30,226 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:26:30,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:26:30,251 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:26:30,269 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_linked_list_swap_contents_harness.i[4503,4516] [2021-11-05 13:26:30,270 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_linked_list_swap_contents_harness.i[4563,4576] [2021-11-05 13:26:30,272 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:26:30,272 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:26:30,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:26:30,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:26:30,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:26:30,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:26:30,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:26:30,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:26:30,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:26:30,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:26:30,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:26:30,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:26:30,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:26:30,390 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:26:30,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:26:30,572 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:26:30,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30 WrapperNode [2021-11-05 13:26:30,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:26:30,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:26:30,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:26:30,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:26:30,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:26:30,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:26:30,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:26:30,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:26:30,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:26:30,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:26:30,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:26:30,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:26:30,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (1/1) ... [2021-11-05 13:26:30,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:26:30,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:26:30,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:26:30,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:26:30,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:26:30,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:26:30,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:26:30,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:26:30,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:26:30,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:26:30,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:26:30,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:26:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:26:31,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:26:31,692 INFO L299 CfgBuilder]: Removed 138 assume(true) statements. [2021-11-05 13:26:31,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:26:31 BoogieIcfgContainer [2021-11-05 13:26:31,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:26:31,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:26:31,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:26:31,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:26:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:26:29" (1/3) ... [2021-11-05 13:26:31,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c960fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:26:31, skipping insertion in model container [2021-11-05 13:26:31,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:26:30" (2/3) ... [2021-11-05 13:26:31,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c960fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:26:31, skipping insertion in model container [2021-11-05 13:26:31,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:26:31" (3/3) ... [2021-11-05 13:26:31,699 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2021-11-05 13:26:31,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:26:31,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-05 13:26:31,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:26:31,736 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:26:31,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-05 13:26:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 266 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:26:31,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:31,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:31,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:31,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2109692067, now seen corresponding path program 1 times [2021-11-05 13:26:31,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:31,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378062704] [2021-11-05 13:26:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:31,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:32,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:32,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378062704] [2021-11-05 13:26:32,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378062704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:32,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:32,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:26:32,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699410599] [2021-11-05 13:26:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:32,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:26:32,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:26:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:26:32,080 INFO L87 Difference]: Start difference. First operand has 267 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 266 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:32,128 INFO L93 Difference]: Finished difference Result 530 states and 785 transitions. [2021-11-05 13:26:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:26:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:26:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:32,143 INFO L225 Difference]: With dead ends: 530 [2021-11-05 13:26:32,143 INFO L226 Difference]: Without dead ends: 260 [2021-11-05 13:26:32,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:26:32,151 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:32,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:26:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-05 13:26:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-05 13:26:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 246 states have (on average 1.4308943089430894) internal successors, (352), 259 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) [2021-11-05 13:26:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 352 transitions. [2021-11-05 13:26:32,207 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 352 transitions. Word has length 53 [2021-11-05 13:26:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:32,209 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 352 transitions. [2021-11-05 13:26:32,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 352 transitions. [2021-11-05 13:26:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:26:32,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:32,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:32,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:26:32,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1639619295, now seen corresponding path program 1 times [2021-11-05 13:26:32,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:32,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248762691] [2021-11-05 13:26:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:32,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:32,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:32,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248762691] [2021-11-05 13:26:32,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248762691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:32,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:32,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:26:32,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897862507] [2021-11-05 13:26:32,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:32,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:26:32,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:26:32,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:26:32,361 INFO L87 Difference]: Start difference. First operand 260 states and 352 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:32,550 INFO L93 Difference]: Finished difference Result 563 states and 782 transitions. [2021-11-05 13:26:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:26:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:26:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:32,553 INFO L225 Difference]: With dead ends: 563 [2021-11-05 13:26:32,553 INFO L226 Difference]: Without dead ends: 324 [2021-11-05 13:26:32,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:32,554 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 72 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.71ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:32,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 986 Invalid, 203 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [29 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 155.71ms Time] [2021-11-05 13:26:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-05 13:26:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 276. [2021-11-05 13:26:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 262 states have (on average 1.4045801526717556) internal successors, (368), 275 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 368 transitions. [2021-11-05 13:26:32,561 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 368 transitions. Word has length 53 [2021-11-05 13:26:32,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:32,561 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 368 transitions. [2021-11-05 13:26:32,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,562 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 368 transitions. [2021-11-05 13:26:32,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:26:32,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:32,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:32,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:26:32,563 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 795613793, now seen corresponding path program 1 times [2021-11-05 13:26:32,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:32,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060501269] [2021-11-05 13:26:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:32,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:32,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:32,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060501269] [2021-11-05 13:26:32,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060501269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:32,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:32,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:26:32,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963658707] [2021-11-05 13:26:32,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:32,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:26:32,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:32,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:26:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:26:32,616 INFO L87 Difference]: Start difference. First operand 276 states and 368 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:32,744 INFO L93 Difference]: Finished difference Result 559 states and 761 transitions. [2021-11-05 13:26:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:26:32,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:26:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:32,746 INFO L225 Difference]: With dead ends: 559 [2021-11-05 13:26:32,746 INFO L226 Difference]: Without dead ends: 308 [2021-11-05 13:26:32,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:32,748 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 20 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.61ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:32,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 939 Invalid, 171 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [41 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 115.61ms Time] [2021-11-05 13:26:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-05 13:26:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2021-11-05 13:26:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 286 states have (on average 1.3706293706293706) internal successors, (392), 299 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 392 transitions. [2021-11-05 13:26:32,753 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 392 transitions. Word has length 53 [2021-11-05 13:26:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:32,753 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 392 transitions. [2021-11-05 13:26:32,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 392 transitions. [2021-11-05 13:26:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:26:32,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:32,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:32,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:26:32,755 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:32,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:32,755 INFO L85 PathProgramCache]: Analyzing trace with hash 725074277, now seen corresponding path program 1 times [2021-11-05 13:26:32,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:32,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882853628] [2021-11-05 13:26:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:32,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:32,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:32,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882853628] [2021-11-05 13:26:32,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882853628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:32,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:32,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:26:32,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311258684] [2021-11-05 13:26:32,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:32,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:26:32,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:26:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:26:32,807 INFO L87 Difference]: Start difference. First operand 300 states and 392 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:32,934 INFO L93 Difference]: Finished difference Result 659 states and 847 transitions. [2021-11-05 13:26:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:26:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:26:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:32,936 INFO L225 Difference]: With dead ends: 659 [2021-11-05 13:26:32,936 INFO L226 Difference]: Without dead ends: 380 [2021-11-05 13:26:32,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:32,937 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 90 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.33ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:32,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1000 Invalid, 175 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [29 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 114.33ms Time] [2021-11-05 13:26:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-05 13:26:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 316. [2021-11-05 13:26:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 302 states have (on average 1.3509933774834437) internal successors, (408), 315 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 408 transitions. [2021-11-05 13:26:32,942 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 408 transitions. Word has length 53 [2021-11-05 13:26:32,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:32,943 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 408 transitions. [2021-11-05 13:26:32,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 408 transitions. [2021-11-05 13:26:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:26:32,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:32,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:32,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:26:32,944 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash 871955103, now seen corresponding path program 1 times [2021-11-05 13:26:32,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:32,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244104821] [2021-11-05 13:26:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:32,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:33,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:33,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244104821] [2021-11-05 13:26:33,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244104821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:33,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:33,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:26:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381604729] [2021-11-05 13:26:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:33,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:26:33,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:26:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:33,018 INFO L87 Difference]: Start difference. First operand 316 states and 408 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:33,131 INFO L93 Difference]: Finished difference Result 562 states and 722 transitions. [2021-11-05 13:26:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:26:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:26:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:33,133 INFO L225 Difference]: With dead ends: 562 [2021-11-05 13:26:33,133 INFO L226 Difference]: Without dead ends: 310 [2021-11-05 13:26:33,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.71ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:26:33,134 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 651 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.76ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:33,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 647 Invalid, 76 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 89.76ms Time] [2021-11-05 13:26:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-05 13:26:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-11-05 13:26:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 296 states have (on average 1.347972972972973) internal successors, (399), 309 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 399 transitions. [2021-11-05 13:26:33,143 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 399 transitions. Word has length 53 [2021-11-05 13:26:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:33,144 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 399 transitions. [2021-11-05 13:26:33,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 399 transitions. [2021-11-05 13:26:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:26:33,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:33,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:33,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:26:33,146 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1234547367, now seen corresponding path program 1 times [2021-11-05 13:26:33,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:33,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971643906] [2021-11-05 13:26:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:33,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:33,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:33,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971643906] [2021-11-05 13:26:33,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971643906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:33,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:33,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:26:33,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243862333] [2021-11-05 13:26:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:33,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:26:33,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:26:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:26:33,252 INFO L87 Difference]: Start difference. First operand 310 states and 399 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:33,334 INFO L93 Difference]: Finished difference Result 660 states and 826 transitions. [2021-11-05 13:26:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:26:33,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:26:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:33,337 INFO L225 Difference]: With dead ends: 660 [2021-11-05 13:26:33,337 INFO L226 Difference]: Without dead ends: 378 [2021-11-05 13:26:33,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:33,338 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 78 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.54ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:33,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 987 Invalid, 73 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 65.54ms Time] [2021-11-05 13:26:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-05 13:26:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 298. [2021-11-05 13:26:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 284 states have (on average 1.3309859154929577) internal successors, (378), 297 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 378 transitions. [2021-11-05 13:26:33,345 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 378 transitions. Word has length 53 [2021-11-05 13:26:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:33,345 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 378 transitions. [2021-11-05 13:26:33,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 378 transitions. [2021-11-05 13:26:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:26:33,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:33,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:33,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:26:33,346 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:33,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1042091935, now seen corresponding path program 1 times [2021-11-05 13:26:33,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:33,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141277736] [2021-11-05 13:26:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:33,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:33,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:33,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141277736] [2021-11-05 13:26:33,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141277736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:33,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:33,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:26:33,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031558629] [2021-11-05 13:26:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:33,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:26:33,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:26:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:33,440 INFO L87 Difference]: Start difference. First operand 298 states and 378 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:33,559 INFO L93 Difference]: Finished difference Result 616 states and 772 transitions. [2021-11-05 13:26:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:26:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 13:26:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:33,561 INFO L225 Difference]: With dead ends: 616 [2021-11-05 13:26:33,561 INFO L226 Difference]: Without dead ends: 352 [2021-11-05 13:26:33,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.96ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:33,562 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 471 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.74ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:33,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 897 Invalid, 119 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 95.74ms Time] [2021-11-05 13:26:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-05 13:26:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 298. [2021-11-05 13:26:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 284 states have (on average 1.323943661971831) internal successors, (376), 297 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 376 transitions. [2021-11-05 13:26:33,568 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 376 transitions. Word has length 57 [2021-11-05 13:26:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:33,568 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 376 transitions. [2021-11-05 13:26:33,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 376 transitions. [2021-11-05 13:26:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-05 13:26:33,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:33,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:33,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:26:33,569 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:33,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1155910083, now seen corresponding path program 1 times [2021-11-05 13:26:33,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:33,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717212835] [2021-11-05 13:26:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:33,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:33,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:33,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717212835] [2021-11-05 13:26:33,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717212835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:33,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:33,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:26:33,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545811434] [2021-11-05 13:26:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:33,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:26:33,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:26:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:26:33,626 INFO L87 Difference]: Start difference. First operand 298 states and 376 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:33,799 INFO L93 Difference]: Finished difference Result 702 states and 869 transitions. [2021-11-05 13:26:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:26:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-05 13:26:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:33,800 INFO L225 Difference]: With dead ends: 702 [2021-11-05 13:26:33,800 INFO L226 Difference]: Without dead ends: 437 [2021-11-05 13:26:33,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 32.95ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:26:33,801 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 712 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.17ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:33,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 1211 Invalid, 201 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 132.17ms Time] [2021-11-05 13:26:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-05 13:26:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 300. [2021-11-05 13:26:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 286 states have (on average 1.3216783216783217) internal successors, (378), 299 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 378 transitions. [2021-11-05 13:26:33,821 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 378 transitions. Word has length 59 [2021-11-05 13:26:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:33,822 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 378 transitions. [2021-11-05 13:26:33,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 378 transitions. [2021-11-05 13:26:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 13:26:33,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:33,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:33,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:26:33,823 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1929169454, now seen corresponding path program 1 times [2021-11-05 13:26:33,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:33,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366129815] [2021-11-05 13:26:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:33,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:33,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:33,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366129815] [2021-11-05 13:26:33,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366129815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:33,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:33,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:26:33,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449448211] [2021-11-05 13:26:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:33,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:26:33,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:26:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:26:33,887 INFO L87 Difference]: Start difference. First operand 300 states and 378 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:34,070 INFO L93 Difference]: Finished difference Result 830 states and 1021 transitions. [2021-11-05 13:26:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:26:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 13:26:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:34,072 INFO L225 Difference]: With dead ends: 830 [2021-11-05 13:26:34,072 INFO L226 Difference]: Without dead ends: 564 [2021-11-05 13:26:34,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 36.44ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:26:34,073 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 954 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.62ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:34,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1156 Invalid, 208 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [22 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 136.62ms Time] [2021-11-05 13:26:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-05 13:26:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 302. [2021-11-05 13:26:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3194444444444444) internal successors, (380), 301 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 380 transitions. [2021-11-05 13:26:34,080 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 380 transitions. Word has length 60 [2021-11-05 13:26:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:34,080 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 380 transitions. [2021-11-05 13:26:34,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 380 transitions. [2021-11-05 13:26:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 13:26:34,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:34,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:34,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:26:34,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1929551887, now seen corresponding path program 1 times [2021-11-05 13:26:34,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:34,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79602550] [2021-11-05 13:26:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:34,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:34,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:34,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79602550] [2021-11-05 13:26:34,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79602550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:34,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:34,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:26:34,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031264972] [2021-11-05 13:26:34,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:34,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:26:34,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:26:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:26:34,208 INFO L87 Difference]: Start difference. First operand 302 states and 380 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:36,028 INFO L93 Difference]: Finished difference Result 1679 states and 1985 transitions. [2021-11-05 13:26:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 13:26:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 13:26:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:36,032 INFO L225 Difference]: With dead ends: 1679 [2021-11-05 13:26:36,032 INFO L226 Difference]: Without dead ends: 1404 [2021-11-05 13:26:36,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 319.77ms TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2021-11-05 13:26:36,033 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 2824 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1215.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.64ms SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1436.44ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:36,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2824 Valid, 2954 Invalid, 1996 Unknown, 0 Unchecked, 13.64ms Time], IncrementalHoareTripleChecker [259 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 1436.44ms Time] [2021-11-05 13:26:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-05 13:26:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 338. [2021-11-05 13:26:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.345679012345679) internal successors, (436), 337 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 436 transitions. [2021-11-05 13:26:36,049 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 436 transitions. Word has length 65 [2021-11-05 13:26:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:36,049 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 436 transitions. [2021-11-05 13:26:36,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 436 transitions. [2021-11-05 13:26:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 13:26:36,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:36,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:36,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:26:36,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:36,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash -900192589, now seen corresponding path program 1 times [2021-11-05 13:26:36,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:36,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182239377] [2021-11-05 13:26:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:36,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:36,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:36,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182239377] [2021-11-05 13:26:36,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182239377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:36,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:36,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:26:36,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867281982] [2021-11-05 13:26:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:36,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:26:36,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:26:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:26:36,147 INFO L87 Difference]: Start difference. First operand 338 states and 436 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:36,315 INFO L93 Difference]: Finished difference Result 765 states and 969 transitions. [2021-11-05 13:26:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:26:36,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 13:26:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:36,317 INFO L225 Difference]: With dead ends: 765 [2021-11-05 13:26:36,317 INFO L226 Difference]: Without dead ends: 493 [2021-11-05 13:26:36,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.98ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:26:36,318 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 1316 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:36,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 702 Invalid, 131 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 132.26ms Time] [2021-11-05 13:26:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-05 13:26:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 338. [2021-11-05 13:26:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.3364197530864197) internal successors, (433), 337 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 433 transitions. [2021-11-05 13:26:36,327 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 433 transitions. Word has length 65 [2021-11-05 13:26:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:36,328 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 433 transitions. [2021-11-05 13:26:36,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 433 transitions. [2021-11-05 13:26:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 13:26:36,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:36,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:36,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:26:36,329 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1655542961, now seen corresponding path program 1 times [2021-11-05 13:26:36,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:36,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160073538] [2021-11-05 13:26:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:36,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:36,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:36,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160073538] [2021-11-05 13:26:36,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160073538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:36,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:36,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:26:36,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564528467] [2021-11-05 13:26:36,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:36,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:26:36,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:26:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:26:36,399 INFO L87 Difference]: Start difference. First operand 338 states and 433 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:36,648 INFO L93 Difference]: Finished difference Result 966 states and 1202 transitions. [2021-11-05 13:26:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:26:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-05 13:26:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:36,651 INFO L225 Difference]: With dead ends: 966 [2021-11-05 13:26:36,651 INFO L226 Difference]: Without dead ends: 693 [2021-11-05 13:26:36,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 40.94ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:26:36,652 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1963 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.96ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:36,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 1048 Invalid, 241 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [33 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 190.96ms Time] [2021-11-05 13:26:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-11-05 13:26:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 338. [2021-11-05 13:26:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.3271604938271604) internal successors, (430), 337 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 430 transitions. [2021-11-05 13:26:36,663 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 430 transitions. Word has length 67 [2021-11-05 13:26:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:36,663 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 430 transitions. [2021-11-05 13:26:36,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 430 transitions. [2021-11-05 13:26:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 13:26:36,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:36,664 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] [2021-11-05 13:26:36,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 13:26:36,664 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1465083877, now seen corresponding path program 1 times [2021-11-05 13:26:36,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:36,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388796454] [2021-11-05 13:26:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:36,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:36,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:36,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388796454] [2021-11-05 13:26:36,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388796454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:36,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:36,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:26:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330613193] [2021-11-05 13:26:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:36,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:26:36,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:26:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:26:36,736 INFO L87 Difference]: Start difference. First operand 338 states and 430 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:37,003 INFO L93 Difference]: Finished difference Result 969 states and 1200 transitions. [2021-11-05 13:26:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:26:37,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-05 13:26:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:37,006 INFO L225 Difference]: With dead ends: 969 [2021-11-05 13:26:37,006 INFO L226 Difference]: Without dead ends: 696 [2021-11-05 13:26:37,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 51.79ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:26:37,007 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 2251 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.95ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:37,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2251 Valid, 948 Invalid, 241 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [46 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 194.95ms Time] [2021-11-05 13:26:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-05 13:26:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 338. [2021-11-05 13:26:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.3179012345679013) internal successors, (427), 337 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 427 transitions. [2021-11-05 13:26:37,018 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 427 transitions. Word has length 68 [2021-11-05 13:26:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:37,018 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 427 transitions. [2021-11-05 13:26:37,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 427 transitions. [2021-11-05 13:26:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:26:37,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:37,019 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] [2021-11-05 13:26:37,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 13:26:37,019 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1833549603, now seen corresponding path program 1 times [2021-11-05 13:26:37,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:37,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488320658] [2021-11-05 13:26:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:37,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:37,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:37,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488320658] [2021-11-05 13:26:37,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488320658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:37,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:26:37,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219656] [2021-11-05 13:26:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:26:37,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:37,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:26:37,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:26:37,060 INFO L87 Difference]: Start difference. First operand 338 states and 427 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:37,127 INFO L93 Difference]: Finished difference Result 678 states and 861 transitions. [2021-11-05 13:26:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:26:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 13:26:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:37,129 INFO L225 Difference]: With dead ends: 678 [2021-11-05 13:26:37,129 INFO L226 Difference]: Without dead ends: 370 [2021-11-05 13:26:37,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:37,130 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 24 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.60ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:37,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 913 Invalid, 129 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 52.60ms Time] [2021-11-05 13:26:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-05 13:26:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2021-11-05 13:26:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.3029411764705883) internal successors, (443), 353 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 443 transitions. [2021-11-05 13:26:37,139 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 443 transitions. Word has length 73 [2021-11-05 13:26:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:37,140 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 443 transitions. [2021-11-05 13:26:37,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 443 transitions. [2021-11-05 13:26:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:26:37,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:37,141 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] [2021-11-05 13:26:37,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 13:26:37,141 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:37,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1974098213, now seen corresponding path program 1 times [2021-11-05 13:26:37,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:37,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230547086] [2021-11-05 13:26:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:37,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:37,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:37,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230547086] [2021-11-05 13:26:37,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230547086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:37,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:37,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:26:37,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626783325] [2021-11-05 13:26:37,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:37,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:26:37,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:26:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:37,212 INFO L87 Difference]: Start difference. First operand 354 states and 443 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:37,526 INFO L93 Difference]: Finished difference Result 998 states and 1226 transitions. [2021-11-05 13:26:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:26:37,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 13:26:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:37,529 INFO L225 Difference]: With dead ends: 998 [2021-11-05 13:26:37,529 INFO L226 Difference]: Without dead ends: 703 [2021-11-05 13:26:37,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 54.38ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:26:37,530 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 2185 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.17ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:37,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 1210 Invalid, 337 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [60 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 243.17ms Time] [2021-11-05 13:26:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-05 13:26:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 354. [2021-11-05 13:26:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2941176470588236) internal successors, (440), 353 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 440 transitions. [2021-11-05 13:26:37,543 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 440 transitions. Word has length 73 [2021-11-05 13:26:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:37,543 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 440 transitions. [2021-11-05 13:26:37,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 440 transitions. [2021-11-05 13:26:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:26:37,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:37,544 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] [2021-11-05 13:26:37,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 13:26:37,544 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash -89678431, now seen corresponding path program 1 times [2021-11-05 13:26:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:37,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210937342] [2021-11-05 13:26:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:37,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:26:37,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:37,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210937342] [2021-11-05 13:26:37,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210937342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:37,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:37,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:26:37,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786220784] [2021-11-05 13:26:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:37,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:26:37,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:26:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:26:37,594 INFO L87 Difference]: Start difference. First operand 354 states and 440 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:37,739 INFO L93 Difference]: Finished difference Result 907 states and 1096 transitions. [2021-11-05 13:26:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:26:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 13:26:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:37,740 INFO L225 Difference]: With dead ends: 907 [2021-11-05 13:26:37,741 INFO L226 Difference]: Without dead ends: 591 [2021-11-05 13:26:37,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.25ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:26:37,743 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 227 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.24ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:37,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1554 Invalid, 167 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [25 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 116.24ms Time] [2021-11-05 13:26:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-05 13:26:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 354. [2021-11-05 13:26:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2882352941176471) internal successors, (438), 353 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 438 transitions. [2021-11-05 13:26:37,759 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 438 transitions. Word has length 73 [2021-11-05 13:26:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:37,759 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 438 transitions. [2021-11-05 13:26:37,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 438 transitions. [2021-11-05 13:26:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 13:26:37,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:37,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:37,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 13:26:37,760 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash 565207681, now seen corresponding path program 1 times [2021-11-05 13:26:37,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:37,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701877462] [2021-11-05 13:26:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:37,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:26:37,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:37,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701877462] [2021-11-05 13:26:37,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701877462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:26:37,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828241123] [2021-11-05 13:26:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:37,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:26:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:26:37,865 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) [2021-11-05 13:26:37,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:26:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:38,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-05 13:26:38,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:26:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:26:38,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:26:38,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828241123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:38,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:26:38,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-11-05 13:26:38,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281102070] [2021-11-05 13:26:38,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:38,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 13:26:38,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:38,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 13:26:38,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:26:38,394 INFO L87 Difference]: Start difference. First operand 354 states and 438 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:38,896 INFO L93 Difference]: Finished difference Result 1069 states and 1279 transitions. [2021-11-05 13:26:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 13:26:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-05 13:26:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:38,898 INFO L225 Difference]: With dead ends: 1069 [2021-11-05 13:26:38,898 INFO L226 Difference]: Without dead ends: 751 [2021-11-05 13:26:38,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 220.35ms TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2021-11-05 13:26:38,899 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1508 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 348.28ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:38,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 2092 Invalid, 411 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [48 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 348.28ms Time] [2021-11-05 13:26:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-05 13:26:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 354. [2021-11-05 13:26:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2823529411764707) internal successors, (436), 353 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 436 transitions. [2021-11-05 13:26:38,914 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 436 transitions. Word has length 77 [2021-11-05 13:26:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:38,914 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 436 transitions. [2021-11-05 13:26:38,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 436 transitions. [2021-11-05 13:26:38,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:26:38,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:38,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:38,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:26:39,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-05 13:26:39,130 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1475756772, now seen corresponding path program 1 times [2021-11-05 13:26:39,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:39,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158865655] [2021-11-05 13:26:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:39,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:26:39,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:39,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158865655] [2021-11-05 13:26:39,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158865655] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:26:39,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425094593] [2021-11-05 13:26:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:39,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:26:39,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:26:39,386 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) [2021-11-05 13:26:39,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:26:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:39,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-05 13:26:39,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:26:39,635 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:26:39,636 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-05 13:26:39,647 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-05 13:26:39,647 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-05 13:26:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:26:46,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:26:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:26:47,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425094593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:26:47,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:26:47,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 10] total 36 [2021-11-05 13:26:47,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992911781] [2021-11-05 13:26:47,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:26:47,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-05 13:26:47,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:47,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-05 13:26:47,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2021-11-05 13:26:47,379 INFO L87 Difference]: Start difference. First operand 354 states and 436 transitions. Second operand has 36 states, 36 states have (on average 5.75) internal successors, (207), 36 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:55,473 INFO L93 Difference]: Finished difference Result 2334 states and 2778 transitions. [2021-11-05 13:26:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-05 13:26:55,473 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.75) internal successors, (207), 36 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:26:55,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:55,478 INFO L225 Difference]: With dead ends: 2334 [2021-11-05 13:26:55,478 INFO L226 Difference]: Without dead ends: 2105 [2021-11-05 13:26:55,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3185 ImplicationChecksByTransitivity, 11187.69ms TimeCoverageRelationStatistics Valid=680, Invalid=9826, Unknown=0, NotChecked=0, Total=10506 [2021-11-05 13:26:55,482 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 2011 mSDsluCounter, 22163 mSDsCounter, 0 mSdLazyCounter, 4306 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2117.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 23135 SdHoareTripleChecker+Invalid, 7797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.79ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3424 IncrementalHoareTripleChecker+Unchecked, 2477.75ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:55,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 23135 Invalid, 7797 Unknown, 0 Unchecked, 47.79ms Time], IncrementalHoareTripleChecker [67 Valid, 4306 Invalid, 0 Unknown, 3424 Unchecked, 2477.75ms Time] [2021-11-05 13:26:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2021-11-05 13:26:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 526. [2021-11-05 13:26:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.27734375) internal successors, (654), 525 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 654 transitions. [2021-11-05 13:26:55,507 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 654 transitions. Word has length 79 [2021-11-05 13:26:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:55,507 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 654 transitions. [2021-11-05 13:26:55,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.75) internal successors, (207), 36 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 654 transitions. [2021-11-05 13:26:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:26:55,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:55,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:55,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:26:55,728 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,SelfDestructingSolverStorable17 [2021-11-05 13:26:55,728 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash 378673426, now seen corresponding path program 1 times [2021-11-05 13:26:55,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:55,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86093785] [2021-11-05 13:26:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:55,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:55,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:55,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86093785] [2021-11-05 13:26:55,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86093785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:55,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:55,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:26:55,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072809504] [2021-11-05 13:26:55,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:55,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:26:55,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:26:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:55,828 INFO L87 Difference]: Start difference. First operand 526 states and 654 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:56,284 INFO L93 Difference]: Finished difference Result 1086 states and 1344 transitions. [2021-11-05 13:26:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:26:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:26:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:56,287 INFO L225 Difference]: With dead ends: 1086 [2021-11-05 13:26:56,287 INFO L226 Difference]: Without dead ends: 771 [2021-11-05 13:26:56,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.12ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:26:56,288 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 908 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367.38ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:56,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1979 Invalid, 450 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [19 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 367.38ms Time] [2021-11-05 13:26:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-05 13:26:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 526. [2021-11-05 13:26:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.2734375) internal successors, (652), 525 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 652 transitions. [2021-11-05 13:26:56,315 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 652 transitions. Word has length 79 [2021-11-05 13:26:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:56,316 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 652 transitions. [2021-11-05 13:26:56,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 652 transitions. [2021-11-05 13:26:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:26:56,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:56,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:56,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 13:26:56,317 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:56,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2078239348, now seen corresponding path program 1 times [2021-11-05 13:26:56,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:56,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072474473] [2021-11-05 13:26:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:56,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:56,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:56,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072474473] [2021-11-05 13:26:56,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072474473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:56,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:56,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:26:56,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988151885] [2021-11-05 13:26:56,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:56,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:26:56,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:26:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:26:56,546 INFO L87 Difference]: Start difference. First operand 526 states and 652 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:56,881 INFO L93 Difference]: Finished difference Result 1018 states and 1271 transitions. [2021-11-05 13:26:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:26:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:26:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:56,883 INFO L225 Difference]: With dead ends: 1018 [2021-11-05 13:26:56,883 INFO L226 Difference]: Without dead ends: 713 [2021-11-05 13:26:56,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 46.47ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:26:56,884 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 826 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.01ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:56,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1504 Invalid, 272 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [6 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 259.01ms Time] [2021-11-05 13:26:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-05 13:26:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 526. [2021-11-05 13:26:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.26953125) internal successors, (650), 525 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 650 transitions. [2021-11-05 13:26:56,905 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 650 transitions. Word has length 79 [2021-11-05 13:26:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:56,906 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 650 transitions. [2021-11-05 13:26:56,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 650 transitions. [2021-11-05 13:26:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:26:56,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:56,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:56,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 13:26:56,907 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2076392306, now seen corresponding path program 1 times [2021-11-05 13:26:56,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:56,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454310462] [2021-11-05 13:26:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:56,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:57,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:57,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454310462] [2021-11-05 13:26:57,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454310462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:57,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:57,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 13:26:57,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940641375] [2021-11-05 13:26:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:57,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 13:26:57,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 13:26:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:26:57,057 INFO L87 Difference]: Start difference. First operand 526 states and 650 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:57,567 INFO L93 Difference]: Finished difference Result 1048 states and 1302 transitions. [2021-11-05 13:26:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:26:57,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:26:57,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:57,569 INFO L225 Difference]: With dead ends: 1048 [2021-11-05 13:26:57,569 INFO L226 Difference]: Without dead ends: 741 [2021-11-05 13:26:57,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 74.93ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:26:57,570 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 889 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 358.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.12ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:57,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 2227 Invalid, 554 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [15 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 416.12ms Time] [2021-11-05 13:26:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-05 13:26:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 526. [2021-11-05 13:26:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.265625) internal successors, (648), 525 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 648 transitions. [2021-11-05 13:26:57,600 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 648 transitions. Word has length 79 [2021-11-05 13:26:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:57,600 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 648 transitions. [2021-11-05 13:26:57,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 648 transitions. [2021-11-05 13:26:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:26:57,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:57,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:57,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 13:26:57,602 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -301384944, now seen corresponding path program 1 times [2021-11-05 13:26:57,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:57,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356062395] [2021-11-05 13:26:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:57,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:57,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:57,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356062395] [2021-11-05 13:26:57,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356062395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:57,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:57,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:26:57,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854048247] [2021-11-05 13:26:57,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:57,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:26:57,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:26:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:57,762 INFO L87 Difference]: Start difference. First operand 526 states and 648 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:58,190 INFO L93 Difference]: Finished difference Result 1024 states and 1273 transitions. [2021-11-05 13:26:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:26:58,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:26:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:58,192 INFO L225 Difference]: With dead ends: 1024 [2021-11-05 13:26:58,192 INFO L226 Difference]: Without dead ends: 713 [2021-11-05 13:26:58,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.45ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:26:58,193 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 837 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.94ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:58,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1892 Invalid, 390 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [11 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 338.94ms Time] [2021-11-05 13:26:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-05 13:26:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 526. [2021-11-05 13:26:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 512 states have (on average 1.26171875) internal successors, (646), 525 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 646 transitions. [2021-11-05 13:26:58,213 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 646 transitions. Word has length 79 [2021-11-05 13:26:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 646 transitions. [2021-11-05 13:26:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 646 transitions. [2021-11-05 13:26:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:26:58,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:58,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:58,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 13:26:58,215 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1079738004, now seen corresponding path program 1 times [2021-11-05 13:26:58,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:58,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245851002] [2021-11-05 13:26:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:58,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:58,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:58,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245851002] [2021-11-05 13:26:58,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245851002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:58,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:58,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:26:58,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300162379] [2021-11-05 13:26:58,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:58,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:26:58,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:26:58,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:26:58,292 INFO L87 Difference]: Start difference. First operand 526 states and 646 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:58,479 INFO L93 Difference]: Finished difference Result 1006 states and 1253 transitions. [2021-11-05 13:26:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:26:58,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:26:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:58,481 INFO L225 Difference]: With dead ends: 1006 [2021-11-05 13:26:58,481 INFO L226 Difference]: Without dead ends: 687 [2021-11-05 13:26:58,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.83ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:26:58,483 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1082 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.35ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:58,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1161 Invalid, 139 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [19 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 125.35ms Time] [2021-11-05 13:26:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-05 13:26:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 508. [2021-11-05 13:26:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 494 states have (on average 1.2611336032388665) internal successors, (623), 507 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 623 transitions. [2021-11-05 13:26:58,505 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 623 transitions. Word has length 79 [2021-11-05 13:26:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:58,505 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 623 transitions. [2021-11-05 13:26:58,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 623 transitions. [2021-11-05 13:26:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 13:26:58,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:58,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:58,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 13:26:58,507 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1446027407, now seen corresponding path program 1 times [2021-11-05 13:26:58,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:58,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293797407] [2021-11-05 13:26:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:58,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:58,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:58,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293797407] [2021-11-05 13:26:58,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293797407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:58,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:58,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:26:58,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837571194] [2021-11-05 13:26:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:58,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:26:58,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:26:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:58,594 INFO L87 Difference]: Start difference. First operand 508 states and 623 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) [2021-11-05 13:26:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:58,953 INFO L93 Difference]: Finished difference Result 1251 states and 1528 transitions. [2021-11-05 13:26:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:26:58,954 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 81 [2021-11-05 13:26:58,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:58,956 INFO L225 Difference]: With dead ends: 1251 [2021-11-05 13:26:58,956 INFO L226 Difference]: Without dead ends: 948 [2021-11-05 13:26:58,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 92.92ms TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:26:58,957 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1284 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.12ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:58,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 1520 Invalid, 332 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 238.12ms Time] [2021-11-05 13:26:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-05 13:26:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 508. [2021-11-05 13:26:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 494 states have (on average 1.2530364372469636) internal successors, (619), 507 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 619 transitions. [2021-11-05 13:26:58,979 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 619 transitions. Word has length 81 [2021-11-05 13:26:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:58,979 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 619 transitions. [2021-11-05 13:26:58,980 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) [2021-11-05 13:26:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 619 transitions. [2021-11-05 13:26:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 13:26:58,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:58,980 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:58,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 13:26:58,981 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1562028301, now seen corresponding path program 1 times [2021-11-05 13:26:58,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:58,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571088552] [2021-11-05 13:26:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:58,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:59,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:59,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571088552] [2021-11-05 13:26:59,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571088552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:59,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:59,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:26:59,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093765370] [2021-11-05 13:26:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:59,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:26:59,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:26:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:59,056 INFO L87 Difference]: Start difference. First operand 508 states and 619 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:26:59,537 INFO L93 Difference]: Finished difference Result 1570 states and 1897 transitions. [2021-11-05 13:26:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:26:59,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-05 13:26:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:26:59,540 INFO L225 Difference]: With dead ends: 1570 [2021-11-05 13:26:59,540 INFO L226 Difference]: Without dead ends: 1265 [2021-11-05 13:26:59,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 83.85ms TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:26:59,541 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1833 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 294.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 343.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:26:59,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2001 Invalid, 472 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [41 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 343.26ms Time] [2021-11-05 13:26:59,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-11-05 13:26:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 508. [2021-11-05 13:26:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 494 states have (on average 1.2449392712550607) internal successors, (615), 507 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 615 transitions. [2021-11-05 13:26:59,574 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 615 transitions. Word has length 83 [2021-11-05 13:26:59,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:26:59,574 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 615 transitions. [2021-11-05 13:26:59,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:26:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 615 transitions. [2021-11-05 13:26:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 13:26:59,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:26:59,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:26:59,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 13:26:59,576 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:26:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:26:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash -178185581, now seen corresponding path program 1 times [2021-11-05 13:26:59,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:26:59,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484246109] [2021-11-05 13:26:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:26:59,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:26:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:26:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:26:59,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:26:59,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484246109] [2021-11-05 13:26:59,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484246109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:26:59,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:26:59,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:26:59,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251109502] [2021-11-05 13:26:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:26:59,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:26:59,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:26:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:26:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:26:59,658 INFO L87 Difference]: Start difference. First operand 508 states and 615 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:00,128 INFO L93 Difference]: Finished difference Result 1572 states and 1892 transitions. [2021-11-05 13:27:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:27:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 84 [2021-11-05 13:27:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:00,131 INFO L225 Difference]: With dead ends: 1572 [2021-11-05 13:27:00,131 INFO L226 Difference]: Without dead ends: 1267 [2021-11-05 13:27:00,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 85.43ms TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:27:00,132 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1664 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.97ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:00,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 2000 Invalid, 470 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [43 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 333.97ms Time] [2021-11-05 13:27:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-11-05 13:27:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 453. [2021-11-05 13:27:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 439 states have (on average 1.2232346241457859) internal successors, (537), 452 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 537 transitions. [2021-11-05 13:27:00,170 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 537 transitions. Word has length 84 [2021-11-05 13:27:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:00,171 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 537 transitions. [2021-11-05 13:27:00,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 537 transitions. [2021-11-05 13:27:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:27:00,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:00,172 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:00,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 13:27:00,172 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -918714283, now seen corresponding path program 1 times [2021-11-05 13:27:00,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:00,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804937848] [2021-11-05 13:27:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:00,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 13:27:00,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:00,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804937848] [2021-11-05 13:27:00,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804937848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:00,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:00,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:27:00,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046362486] [2021-11-05 13:27:00,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:00,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:27:00,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:27:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:27:00,213 INFO L87 Difference]: Start difference. First operand 453 states and 537 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:00,311 INFO L93 Difference]: Finished difference Result 1024 states and 1213 transitions. [2021-11-05 13:27:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:27:00,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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 88 [2021-11-05 13:27:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:00,312 INFO L225 Difference]: With dead ends: 1024 [2021-11-05 13:27:00,312 INFO L226 Difference]: Without dead ends: 601 [2021-11-05 13:27:00,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:27:00,313 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 249 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.45ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:00,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 719 Invalid, 148 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [38 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 66.45ms Time] [2021-11-05 13:27:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-05 13:27:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 431. [2021-11-05 13:27:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 417 states have (on average 1.1942446043165467) internal successors, (498), 430 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 498 transitions. [2021-11-05 13:27:00,334 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 498 transitions. Word has length 88 [2021-11-05 13:27:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:00,334 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 498 transitions. [2021-11-05 13:27:00,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 498 transitions. [2021-11-05 13:27:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:27:00,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:00,335 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:00,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 13:27:00,336 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1288449745, now seen corresponding path program 1 times [2021-11-05 13:27:00,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:00,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447307264] [2021-11-05 13:27:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:00,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:27:00,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:00,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447307264] [2021-11-05 13:27:00,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447307264] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:00,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757354010] [2021-11-05 13:27:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:00,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:00,589 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) [2021-11-05 13:27:00,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:27:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:00,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-05 13:27:00,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:00,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:00,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-05 13:27:00,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:00,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:00,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-05 13:27:01,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-05 13:27:01,776 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-05 13:27:01,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 19 [2021-11-05 13:27:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:27:01,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:27:02,345 INFO L354 Elim1Store]: treesize reduction 55, result has 82.3 percent of original size [2021-11-05 13:27:02,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 2185 treesize of output 2070 [2021-11-05 13:27:02,387 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 2738 treesize of output 2662 [2021-11-05 13:27:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:27:05,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757354010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:27:05,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:27:05,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 37 [2021-11-05 13:27:05,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621977560] [2021-11-05 13:27:05,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:27:05,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-05 13:27:05,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-05 13:27:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 13:27:05,781 INFO L87 Difference]: Start difference. First operand 431 states and 498 transitions. Second operand has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:09,542 INFO L93 Difference]: Finished difference Result 1505 states and 1754 transitions. [2021-11-05 13:27:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 13:27:09,543 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 0 states have call successors, (0), 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 [2021-11-05 13:27:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:09,545 INFO L225 Difference]: With dead ends: 1505 [2021-11-05 13:27:09,545 INFO L226 Difference]: Without dead ends: 1183 [2021-11-05 13:27:09,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1834.25ms TimeCoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2021-11-05 13:27:09,547 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 3560 mSDsluCounter, 9023 mSDsCounter, 0 mSdLazyCounter, 4644 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2094.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 9559 SdHoareTripleChecker+Invalid, 4793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.40ms SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2425.35ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:09,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3560 Valid, 9559 Invalid, 4793 Unknown, 0 Unchecked, 18.40ms Time], IncrementalHoareTripleChecker [149 Valid, 4644 Invalid, 0 Unknown, 0 Unchecked, 2425.35ms Time] [2021-11-05 13:27:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-05 13:27:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 509. [2021-11-05 13:27:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 495 states have (on average 1.1696969696969697) internal successors, (579), 508 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 579 transitions. [2021-11-05 13:27:09,576 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 579 transitions. Word has length 88 [2021-11-05 13:27:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:09,577 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 579 transitions. [2021-11-05 13:27:09,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 579 transitions. [2021-11-05 13:27:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 13:27:09,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:09,579 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:09,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:09,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:09,795 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2015935427, now seen corresponding path program 1 times [2021-11-05 13:27:09,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:09,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973850612] [2021-11-05 13:27:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:09,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:10,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:10,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973850612] [2021-11-05 13:27:10,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973850612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:10,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:10,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 13:27:10,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513132267] [2021-11-05 13:27:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:10,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 13:27:10,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 13:27:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:27:10,011 INFO L87 Difference]: Start difference. First operand 509 states and 579 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:11,561 INFO L93 Difference]: Finished difference Result 1594 states and 1840 transitions. [2021-11-05 13:27:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-05 13:27:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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 89 [2021-11-05 13:27:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:11,564 INFO L225 Difference]: With dead ends: 1594 [2021-11-05 13:27:11,564 INFO L226 Difference]: Without dead ends: 1356 [2021-11-05 13:27:11,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 526.90ms TimeCoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2021-11-05 13:27:11,565 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1788 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 821.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.96ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 976.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:11,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 4384 Invalid, 1611 Unknown, 0 Unchecked, 7.96ms Time], IncrementalHoareTripleChecker [57 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 976.00ms Time] [2021-11-05 13:27:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-11-05 13:27:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 518. [2021-11-05 13:27:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1666666666666667) internal successors, (588), 517 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 588 transitions. [2021-11-05 13:27:11,595 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 588 transitions. Word has length 89 [2021-11-05 13:27:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:11,595 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 588 transitions. [2021-11-05 13:27:11,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 588 transitions. [2021-11-05 13:27:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:27:11,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:11,597 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:11,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 13:27:11,597 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash -568652721, now seen corresponding path program 1 times [2021-11-05 13:27:11,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:11,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3422899] [2021-11-05 13:27:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:11,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:27:11,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:11,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3422899] [2021-11-05 13:27:11,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3422899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:11,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:11,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:27:11,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915355259] [2021-11-05 13:27:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:11,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:27:11,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:27:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:27:11,768 INFO L87 Difference]: Start difference. First operand 518 states and 588 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:12,166 INFO L93 Difference]: Finished difference Result 872 states and 1006 transitions. [2021-11-05 13:27:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:27:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 90 [2021-11-05 13:27:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:12,168 INFO L225 Difference]: With dead ends: 872 [2021-11-05 13:27:12,168 INFO L226 Difference]: Without dead ends: 688 [2021-11-05 13:27:12,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.13ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:27:12,169 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 799 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 314.99ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:12,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 1777 Invalid, 375 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [9 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 314.99ms Time] [2021-11-05 13:27:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-05 13:27:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 518. [2021-11-05 13:27:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1646825396825398) internal successors, (587), 517 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 587 transitions. [2021-11-05 13:27:12,200 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 587 transitions. Word has length 90 [2021-11-05 13:27:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:12,200 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 587 transitions. [2021-11-05 13:27:12,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 587 transitions. [2021-11-05 13:27:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:27:12,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:12,202 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:12,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 13:27:12,202 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1949460171, now seen corresponding path program 1 times [2021-11-05 13:27:12,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:12,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703856369] [2021-11-05 13:27:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:12,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:27:12,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:12,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703856369] [2021-11-05 13:27:12,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703856369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:12,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:12,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:27:12,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192687675] [2021-11-05 13:27:12,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:12,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:27:12,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:12,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:27:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:27:12,363 INFO L87 Difference]: Start difference. First operand 518 states and 587 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:12,685 INFO L93 Difference]: Finished difference Result 868 states and 1001 transitions. [2021-11-05 13:27:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:27:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 90 [2021-11-05 13:27:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:12,688 INFO L225 Difference]: With dead ends: 868 [2021-11-05 13:27:12,688 INFO L226 Difference]: Without dead ends: 687 [2021-11-05 13:27:12,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.54ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:27:12,688 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 779 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.27ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:12,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1412 Invalid, 262 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 250.27ms Time] [2021-11-05 13:27:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-05 13:27:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 518. [2021-11-05 13:27:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1626984126984128) internal successors, (586), 517 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 586 transitions. [2021-11-05 13:27:12,716 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 586 transitions. Word has length 90 [2021-11-05 13:27:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:12,717 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 586 transitions. [2021-11-05 13:27:12,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 586 transitions. [2021-11-05 13:27:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:27:12,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:12,718 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:12,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 13:27:12,718 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1951307213, now seen corresponding path program 1 times [2021-11-05 13:27:12,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:12,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531770424] [2021-11-05 13:27:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:12,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:27:12,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:12,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531770424] [2021-11-05 13:27:12,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531770424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:12,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:12,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:27:12,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45637929] [2021-11-05 13:27:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:12,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:27:12,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:27:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:27:12,941 INFO L87 Difference]: Start difference. First operand 518 states and 586 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:13,299 INFO L93 Difference]: Finished difference Result 869 states and 1001 transitions. [2021-11-05 13:27:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:27:13,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 90 [2021-11-05 13:27:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:13,301 INFO L225 Difference]: With dead ends: 869 [2021-11-05 13:27:13,301 INFO L226 Difference]: Without dead ends: 687 [2021-11-05 13:27:13,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.00ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:27:13,302 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 782 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.72ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:13,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1789 Invalid, 364 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 265.72ms Time] [2021-11-05 13:27:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-05 13:27:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 518. [2021-11-05 13:27:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 504 states have (on average 1.1607142857142858) internal successors, (585), 517 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) [2021-11-05 13:27:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 585 transitions. [2021-11-05 13:27:13,331 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 585 transitions. Word has length 90 [2021-11-05 13:27:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:13,331 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 585 transitions. [2021-11-05 13:27:13,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 585 transitions. [2021-11-05 13:27:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:27:13,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:13,337 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:13,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 13:27:13,338 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash 111405649, now seen corresponding path program 1 times [2021-11-05 13:27:13,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:13,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39299154] [2021-11-05 13:27:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:13,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:27:13,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:13,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39299154] [2021-11-05 13:27:13,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39299154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:13,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:13,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:27:13,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553991344] [2021-11-05 13:27:13,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:13,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:27:13,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:27:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:27:13,418 INFO L87 Difference]: Start difference. First operand 518 states and 585 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:13,784 INFO L93 Difference]: Finished difference Result 868 states and 999 transitions. [2021-11-05 13:27:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:27:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 90 [2021-11-05 13:27:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:13,786 INFO L225 Difference]: With dead ends: 868 [2021-11-05 13:27:13,786 INFO L226 Difference]: Without dead ends: 680 [2021-11-05 13:27:13,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 57.93ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:27:13,786 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 755 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 229.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.55ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.11ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:13,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1771 Invalid, 371 Unknown, 0 Unchecked, 2.55ms Time], IncrementalHoareTripleChecker [25 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 274.11ms Time] [2021-11-05 13:27:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-05 13:27:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 511. [2021-11-05 13:27:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 497 states have (on average 1.158953722334004) internal successors, (576), 510 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 576 transitions. [2021-11-05 13:27:13,815 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 576 transitions. Word has length 90 [2021-11-05 13:27:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:13,815 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 576 transitions. [2021-11-05 13:27:13,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 576 transitions. [2021-11-05 13:27:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 13:27:13,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:13,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:13,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 13:27:13,817 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:13,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:13,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1079568069, now seen corresponding path program 1 times [2021-11-05 13:27:13,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:13,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008964485] [2021-11-05 13:27:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:13,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:13,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:13,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008964485] [2021-11-05 13:27:13,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008964485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:13,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199592898] [2021-11-05 13:27:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:13,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:13,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:13,911 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) [2021-11-05 13:27:13,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:27:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:14,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-05 13:27:14,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:14,193 INFO L354 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2021-11-05 13:27:14,193 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 3 case distinctions, treesize of input 55 treesize of output 63 [2021-11-05 13:27:14,218 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-05 13:27:14,218 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 3 case distinctions, treesize of input 63 treesize of output 71 [2021-11-05 13:27:14,814 INFO L354 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2021-11-05 13:27:14,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 102 [2021-11-05 13:27:14,835 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-05 13:27:14,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 75 [2021-11-05 13:27:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:14,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:27:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:15,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199592898] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:15,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 13:27:15,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 10] total 18 [2021-11-05 13:27:15,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877116505] [2021-11-05 13:27:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:15,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:27:15,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:27:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:27:15,029 INFO L87 Difference]: Start difference. First operand 511 states and 576 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:15,662 INFO L93 Difference]: Finished difference Result 1250 states and 1426 transitions. [2021-11-05 13:27:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:27:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 91 [2021-11-05 13:27:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:15,665 INFO L225 Difference]: With dead ends: 1250 [2021-11-05 13:27:15,665 INFO L226 Difference]: Without dead ends: 1014 [2021-11-05 13:27:15,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 308.66ms TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:27:15,666 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 609 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 418.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 486.48ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:15,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1510 Invalid, 795 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [83 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 486.48ms Time] [2021-11-05 13:27:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-05 13:27:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 539. [2021-11-05 13:27:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 525 states have (on average 1.1638095238095238) internal successors, (611), 538 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 611 transitions. [2021-11-05 13:27:15,698 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 611 transitions. Word has length 91 [2021-11-05 13:27:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:15,699 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 611 transitions. [2021-11-05 13:27:15,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 611 transitions. [2021-11-05 13:27:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 13:27:15,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:15,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:15,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:15,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:15,903 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash 106923265, now seen corresponding path program 1 times [2021-11-05 13:27:15,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:15,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079577933] [2021-11-05 13:27:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:15,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:27:15,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:15,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079577933] [2021-11-05 13:27:15,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079577933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:15,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:15,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:27:15,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895606952] [2021-11-05 13:27:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:15,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:27:15,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:27:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:27:15,965 INFO L87 Difference]: Start difference. First operand 539 states and 611 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:16,185 INFO L93 Difference]: Finished difference Result 868 states and 986 transitions. [2021-11-05 13:27:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:27:16,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2021-11-05 13:27:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:16,188 INFO L225 Difference]: With dead ends: 868 [2021-11-05 13:27:16,188 INFO L226 Difference]: Without dead ends: 856 [2021-11-05 13:27:16,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 26.48ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:27:16,189 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 513 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.68ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:16,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1602 Invalid, 267 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 138.68ms Time] [2021-11-05 13:27:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-05 13:27:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 567. [2021-11-05 13:27:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 553 states have (on average 1.1555153707052441) internal successors, (639), 566 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 639 transitions. [2021-11-05 13:27:16,228 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 639 transitions. Word has length 92 [2021-11-05 13:27:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:16,228 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 639 transitions. [2021-11-05 13:27:16,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 639 transitions. [2021-11-05 13:27:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 13:27:16,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:16,229 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:16,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 13:27:16,230 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:16,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash -592319472, now seen corresponding path program 1 times [2021-11-05 13:27:16,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:16,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051953368] [2021-11-05 13:27:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:16,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:27:16,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:16,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051953368] [2021-11-05 13:27:16,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051953368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:16,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:16,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:27:16,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266349228] [2021-11-05 13:27:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:16,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:27:16,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:27:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:27:16,313 INFO L87 Difference]: Start difference. First operand 567 states and 639 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:16,638 INFO L93 Difference]: Finished difference Result 1190 states and 1363 transitions. [2021-11-05 13:27:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:27:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 92 [2021-11-05 13:27:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:16,640 INFO L225 Difference]: With dead ends: 1190 [2021-11-05 13:27:16,640 INFO L226 Difference]: Without dead ends: 976 [2021-11-05 13:27:16,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 60.19ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:27:16,641 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1454 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.50ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:16,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1090 Invalid, 235 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [26 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 202.50ms Time] [2021-11-05 13:27:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-05 13:27:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 567. [2021-11-05 13:27:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 553 states have (on average 1.1537070524412296) internal successors, (638), 566 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 638 transitions. [2021-11-05 13:27:16,681 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 638 transitions. Word has length 92 [2021-11-05 13:27:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:16,681 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 638 transitions. [2021-11-05 13:27:16,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 638 transitions. [2021-11-05 13:27:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 13:27:16,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:16,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:16,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 13:27:16,682 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:16,683 INFO L85 PathProgramCache]: Analyzing trace with hash 44757236, now seen corresponding path program 1 times [2021-11-05 13:27:16,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:16,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673842289] [2021-11-05 13:27:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:16,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:16,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:16,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673842289] [2021-11-05 13:27:16,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673842289] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:16,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183770122] [2021-11-05 13:27:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:16,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:16,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:16,866 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) [2021-11-05 13:27:16,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:27:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:17,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-05 13:27:17,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:17,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2021-11-05 13:27:17,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:17,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-11-05 13:27:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:27:17,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:17,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183770122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:17,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:27:17,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 22 [2021-11-05 13:27:17,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77808992] [2021-11-05 13:27:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:17,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:27:17,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:27:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:27:17,801 INFO L87 Difference]: Start difference. First operand 567 states and 638 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2021-11-05 13:27:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:20,526 INFO L93 Difference]: Finished difference Result 1644 states and 1878 transitions. [2021-11-05 13:27:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-05 13:27:20,526 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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 97 [2021-11-05 13:27:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:20,529 INFO L225 Difference]: With dead ends: 1644 [2021-11-05 13:27:20,529 INFO L226 Difference]: Without dead ends: 1642 [2021-11-05 13:27:20,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 1455.51ms TimeCoverageRelationStatistics Valid=1652, Invalid=7854, Unknown=0, NotChecked=0, Total=9506 [2021-11-05 13:27:20,531 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 2261 mSDsluCounter, 5566 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1093.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.45ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1278.49ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:20,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2261 Valid, 6298 Invalid, 2439 Unknown, 0 Unchecked, 11.45ms Time], IncrementalHoareTripleChecker [129 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1278.49ms Time] [2021-11-05 13:27:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-11-05 13:27:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 565. [2021-11-05 13:27:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 552 states have (on average 1.1503623188405796) internal successors, (635), 564 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 635 transitions. [2021-11-05 13:27:20,575 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 635 transitions. Word has length 97 [2021-11-05 13:27:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:20,575 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 635 transitions. [2021-11-05 13:27:20,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2021-11-05 13:27:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 635 transitions. [2021-11-05 13:27:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 13:27:20,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:20,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:20,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:20,781 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,SelfDestructingSolverStorable36 [2021-11-05 13:27:20,782 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:20,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:20,782 INFO L85 PathProgramCache]: Analyzing trace with hash -212752875, now seen corresponding path program 1 times [2021-11-05 13:27:20,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:20,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751951402] [2021-11-05 13:27:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:20,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:20,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:20,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751951402] [2021-11-05 13:27:20,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751951402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:20,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784841211] [2021-11-05 13:27:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:20,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:20,904 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) [2021-11-05 13:27:20,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:27:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:21,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-05 13:27:21,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:21,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-05 13:27:21,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-05 13:27:21,720 INFO L354 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2021-11-05 13:27:21,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 126 treesize of output 84 [2021-11-05 13:27:21,733 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-05 13:27:21,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 32 [2021-11-05 13:27:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:21,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:27:21,843 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-05 13:27:21,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 11300 treesize of output 1 [2021-11-05 13:27:21,854 INFO L354 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2021-11-05 13:27:21,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12854 treesize of output 1 [2021-11-05 13:27:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:21,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784841211] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:27:21,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:27:21,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2021-11-05 13:27:21,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250328627] [2021-11-05 13:27:21,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:27:21,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 13:27:21,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 13:27:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:27:21,917 INFO L87 Difference]: Start difference. First operand 565 states and 635 transitions. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:23,907 INFO L93 Difference]: Finished difference Result 2109 states and 2416 transitions. [2021-11-05 13:27:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-05 13:27:23,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 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 [2021-11-05 13:27:23,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:23,910 INFO L225 Difference]: With dead ends: 2109 [2021-11-05 13:27:23,910 INFO L226 Difference]: Without dead ends: 1803 [2021-11-05 13:27:23,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 914.42ms TimeCoverageRelationStatistics Valid=475, Invalid=2387, Unknown=0, NotChecked=0, Total=2862 [2021-11-05 13:27:23,912 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 2280 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 921.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.90ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 1068.01ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:23,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 5074 Invalid, 2462 Unknown, 0 Unchecked, 8.90ms Time], IncrementalHoareTripleChecker [73 Valid, 1960 Invalid, 0 Unknown, 429 Unchecked, 1068.01ms Time] [2021-11-05 13:27:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-05 13:27:23,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 580. [2021-11-05 13:27:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 567 states have (on average 1.1516754850088184) internal successors, (653), 579 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 653 transitions. [2021-11-05 13:27:23,966 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 653 transitions. Word has length 97 [2021-11-05 13:27:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:23,966 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 653 transitions. [2021-11-05 13:27:23,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 653 transitions. [2021-11-05 13:27:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 13:27:23,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:23,967 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:23,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:24,175 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,SelfDestructingSolverStorable37 [2021-11-05 13:27:24,176 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1022099501, now seen corresponding path program 1 times [2021-11-05 13:27:24,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:24,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441235686] [2021-11-05 13:27:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:24,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:24,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:24,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441235686] [2021-11-05 13:27:24,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441235686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:24,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47134443] [2021-11-05 13:27:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:24,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:24,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:24,359 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) [2021-11-05 13:27:24,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:27:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:24,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-05 13:27:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:24,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-05 13:27:24,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-05 13:27:25,050 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:27:25,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 36 treesize of output 19 [2021-11-05 13:27:25,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-11-05 13:27:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:25,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:27:25,216 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 25 treesize of output 23 [2021-11-05 13:27:25,231 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 29 treesize of output 27 [2021-11-05 13:27:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:27:25,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47134443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:27:25,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:27:25,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 17 [2021-11-05 13:27:25,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176444459] [2021-11-05 13:27:25,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:27:25,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 13:27:25,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 13:27:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:27:25,313 INFO L87 Difference]: Start difference. First operand 580 states and 653 transitions. Second operand has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:26,472 INFO L93 Difference]: Finished difference Result 1423 states and 1623 transitions. [2021-11-05 13:27:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 13:27:26,476 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 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 [2021-11-05 13:27:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:26,478 INFO L225 Difference]: With dead ends: 1423 [2021-11-05 13:27:26,478 INFO L226 Difference]: Without dead ends: 1106 [2021-11-05 13:27:26,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 510.57ms TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 13:27:26,479 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 1505 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 596.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 689.53ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:26,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 2917 Invalid, 1137 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [39 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 689.53ms Time] [2021-11-05 13:27:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-05 13:27:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 519. [2021-11-05 13:27:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 508 states have (on average 1.1279527559055118) internal successors, (573), 518 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 573 transitions. [2021-11-05 13:27:26,526 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 573 transitions. Word has length 97 [2021-11-05 13:27:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:26,526 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 573 transitions. [2021-11-05 13:27:26,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 573 transitions. [2021-11-05 13:27:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 13:27:26,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:26,527 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:26,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:26,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:26,744 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1344967032, now seen corresponding path program 1 times [2021-11-05 13:27:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:26,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782456761] [2021-11-05 13:27:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:26,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 13:27:26,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:26,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782456761] [2021-11-05 13:27:26,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782456761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:26,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234553738] [2021-11-05 13:27:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:26,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:26,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:26,858 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) [2021-11-05 13:27:26,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:27:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:26,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-05 13:27:26,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:27,043 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 7 treesize of output 3 [2021-11-05 13:27:27,130 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 15 treesize of output 7 [2021-11-05 13:27:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:27:27,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:27,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234553738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:27,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:27:27,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2021-11-05 13:27:27,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713447859] [2021-11-05 13:27:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:27,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:27:27,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:27,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:27:27,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:27:27,203 INFO L87 Difference]: Start difference. First operand 519 states and 573 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:27,633 INFO L93 Difference]: Finished difference Result 1221 states and 1348 transitions. [2021-11-05 13:27:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 13:27:27,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 97 [2021-11-05 13:27:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:27,635 INFO L225 Difference]: With dead ends: 1221 [2021-11-05 13:27:27,635 INFO L226 Difference]: Without dead ends: 881 [2021-11-05 13:27:27,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 231.40ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 13:27:27,637 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 745 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.14ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:27,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1570 Invalid, 460 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [44 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 216.14ms Time] [2021-11-05 13:27:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-11-05 13:27:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 530. [2021-11-05 13:27:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 519 states have (on average 1.1252408477842004) internal successors, (584), 529 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 584 transitions. [2021-11-05 13:27:27,687 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 584 transitions. Word has length 97 [2021-11-05 13:27:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:27,688 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 584 transitions. [2021-11-05 13:27:27,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 584 transitions. [2021-11-05 13:27:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 13:27:27,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:27,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:27,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:27,889 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,SelfDestructingSolverStorable39 [2021-11-05 13:27:27,890 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 13:27:27,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1546790966, now seen corresponding path program 1 times [2021-11-05 13:27:27,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:27,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805794029] [2021-11-05 13:27:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:27,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 13:27:28,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:28,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805794029] [2021-11-05 13:27:28,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805794029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:27:28,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519166821] [2021-11-05 13:27:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:28,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:28,339 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) [2021-11-05 13:27:28,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:27:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:28,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-05 13:27:28,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:28,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-05 13:27:28,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-05 13:27:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-05 13:27:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-11-05 13:27:28,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2021-11-05 13:27:28,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,949 INFO L354 Elim1Store]: treesize reduction 184, result has 30.3 percent of original size [2021-11-05 13:27:28,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 137 treesize of output 174 [2021-11-05 13:27:28,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:29,014 INFO L354 Elim1Store]: treesize reduction 224, result has 28.2 percent of original size [2021-11-05 13:27:29,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 189 treesize of output 222 [2021-11-05 13:27:37,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:37,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:37,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:37,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:27:37,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,018 INFO L354 Elim1Store]: treesize reduction 386, result has 39.1 percent of original size [2021-11-05 13:27:38,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 374 treesize of output 508 [2021-11-05 13:27:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:27:38,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:27:38,177 INFO L354 Elim1Store]: treesize reduction 317, result has 31.7 percent of original size [2021-11-05 13:27:38,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 580 treesize of output 488 Killed by 15