./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:35:36,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:35:36,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:35:36,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:35:36,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:35:36,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:35:36,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:35:36,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:35:36,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:35:36,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:35:36,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:35:36,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:35:36,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:35:36,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:35:36,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:35:36,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:35:36,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:35:36,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:35:36,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:35:36,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:35:36,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:35:36,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:35:36,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:35:36,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:35:36,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:35:36,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:35:36,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:35:36,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:35:36,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:35:36,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:35:36,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:35:36,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:35:36,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:35:36,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:35:36,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:35:36,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:35:36,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:35:36,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:35:36,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:35:36,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:35:36,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:35:36,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:35:36,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:35:36,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:35:36,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:35:36,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:35:36,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:35:36,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:35:36,542 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:35:36,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:35:36,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:35:36,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:35:36,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:35:36,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:35:36,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:35:36,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:35:36,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:35:36,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:35:36,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:35:36,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:35:36,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:35:36,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:35:36,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:35:36,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:35:36,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:35:36,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:35:36,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:35:36,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:35:36,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:35:36,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:35:36,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:35:36,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-02 13:35:36,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:35:36,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:35:36,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:35:36,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:35:36,811 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:35:36,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-02 13:35:36,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265f608e0/e87945722bf54477b08a83fd87236bc8/FLAG8f4eacafb [2021-11-02 13:35:37,529 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:35:37,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-02 13:35:37,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265f608e0/e87945722bf54477b08a83fd87236bc8/FLAG8f4eacafb [2021-11-02 13:35:37,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265f608e0/e87945722bf54477b08a83fd87236bc8 [2021-11-02 13:35:37,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:35:37,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:35:37,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:35:37,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:35:37,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:35:37,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:35:37" (1/1) ... [2021-11-02 13:35:37,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5744a89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:37, skipping insertion in model container [2021-11-02 13:35:37,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:35:37" (1/1) ... [2021-11-02 13:35:37,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:35:37,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:35:38,191 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_end_harness.i[4493,4506] [2021-11-02 13:35:38,198 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_end_harness.i[4553,4566] [2021-11-02 13:35:38,218 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:35:38,231 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:35:38,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,835 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,838 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,838 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:38,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:35:39,089 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:35:39,092 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:35:39,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:35:39,094 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:35:39,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:35:39,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:35:39,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:35:39,103 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:35:39,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:35:39,214 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:35:39,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:35:39,246 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:35:39,270 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_end_harness.i[4493,4506] [2021-11-02 13:35:39,271 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_end_harness.i[4553,4566] [2021-11-02 13:35:39,273 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:35:39,286 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:35:39,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:35:39,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:35:39,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:35:39,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:35:39,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:35:39,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:35:39,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:35:39,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:35:39,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:35:39,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:35:39,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:35:39,377 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:35:39,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:35:39,569 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:35:39,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39 WrapperNode [2021-11-02 13:35:39,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:35:39,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:35:39,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:35:39,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:35:39,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:35:39,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:35:39,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:35:39,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:35:39,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:35:39,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:35:39,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:35:39,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:35:39,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (1/1) ... [2021-11-02 13:35:39,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:35:39,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:35:39,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 13:35:39,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 13:35:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:35:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:35:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:35:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:35:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:35:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:35:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:35:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:35:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:35:40,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:35:40,412 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-02 13:35:40,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:35:40 BoogieIcfgContainer [2021-11-02 13:35:40,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:35:40,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:35:40,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:35:40,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:35:40,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:35:37" (1/3) ... [2021-11-02 13:35:40,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e5bb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:35:40, skipping insertion in model container [2021-11-02 13:35:40,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:35:39" (2/3) ... [2021-11-02 13:35:40,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e5bb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:35:40, skipping insertion in model container [2021-11-02 13:35:40,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:35:40" (3/3) ... [2021-11-02 13:35:40,425 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2021-11-02 13:35:40,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:35:40,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-02 13:35:40,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:35:40,498 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 13:35:40,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 13:35:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:40,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:35:40,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:40,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:40,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-02 13:35:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:40,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025210785] [2021-11-02 13:35:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:40,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:40,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:40,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025210785] [2021-11-02 13:35:40,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025210785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:40,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:40,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:35:40,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153779787] [2021-11-02 13:35:40,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:35:40,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:35:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:35:40,931 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:41,210 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-02 13:35:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:35:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:35:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:41,220 INFO L225 Difference]: With dead ends: 224 [2021-11-02 13:35:41,221 INFO L226 Difference]: Without dead ends: 109 [2021-11-02 13:35:41,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:35:41,227 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.23ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:41,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 158 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 243.23ms Time] [2021-11-02 13:35:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-02 13:35:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-02 13:35:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-02 13:35:41,262 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-02 13:35:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:41,263 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-02 13:35:41,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-02 13:35:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:35:41,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:41,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:41,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:35:41,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-02 13:35:41,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:41,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750200817] [2021-11-02 13:35:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:41,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:41,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:41,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750200817] [2021-11-02 13:35:41,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750200817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:41,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:41,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:35:41,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381836407] [2021-11-02 13:35:41,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:35:41,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:35:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:35:41,450 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:41,887 INFO L93 Difference]: Finished difference Result 254 states and 367 transitions. [2021-11-02 13:35:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:35:41,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:35:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:41,893 INFO L225 Difference]: With dead ends: 254 [2021-11-02 13:35:41,894 INFO L226 Difference]: Without dead ends: 157 [2021-11-02 13:35:41,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:35:41,896 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 386.41ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:41,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 566 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [13 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 386.41ms Time] [2021-11-02 13:35:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-02 13:35:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2021-11-02 13:35:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.424778761061947) internal successors, (161), 116 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2021-11-02 13:35:41,923 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 41 [2021-11-02 13:35:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:41,927 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2021-11-02 13:35:41,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2021-11-02 13:35:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:35:41,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:41,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:41,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:35:41,931 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:41,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1037297643, now seen corresponding path program 1 times [2021-11-02 13:35:41,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:41,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323501800] [2021-11-02 13:35:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:41,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:42,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:42,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323501800] [2021-11-02 13:35:42,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323501800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:42,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:42,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:35:42,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915961615] [2021-11-02 13:35:42,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:35:42,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:35:42,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:35:42,087 INFO L87 Difference]: Start difference. First operand 117 states and 161 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:42,460 INFO L93 Difference]: Finished difference Result 250 states and 354 transitions. [2021-11-02 13:35:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:35:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:35:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:42,462 INFO L225 Difference]: With dead ends: 250 [2021-11-02 13:35:42,462 INFO L226 Difference]: Without dead ends: 149 [2021-11-02 13:35:42,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:35:42,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 269.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 341.51ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:42,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 536 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [13 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 341.51ms Time] [2021-11-02 13:35:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-02 13:35:42,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2021-11-02 13:35:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.396694214876033) internal successors, (169), 124 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 169 transitions. [2021-11-02 13:35:42,474 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 169 transitions. Word has length 41 [2021-11-02 13:35:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:42,475 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 169 transitions. [2021-11-02 13:35:42,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:42,475 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 169 transitions. [2021-11-02 13:35:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:35:42,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:42,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:42,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:35:42,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:42,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 348905751, now seen corresponding path program 1 times [2021-11-02 13:35:42,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:42,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903225690] [2021-11-02 13:35:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:42,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:42,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:42,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903225690] [2021-11-02 13:35:42,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903225690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:42,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:42,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:35:42,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975251684] [2021-11-02 13:35:42,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:35:42,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:35:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:35:42,568 INFO L87 Difference]: Start difference. First operand 125 states and 169 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:42,765 INFO L93 Difference]: Finished difference Result 230 states and 314 transitions. [2021-11-02 13:35:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:35:42,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:35:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:42,767 INFO L225 Difference]: With dead ends: 230 [2021-11-02 13:35:42,767 INFO L226 Difference]: Without dead ends: 119 [2021-11-02 13:35:42,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.89ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:35:42,769 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.03ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:42,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 304 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [7 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 181.03ms Time] [2021-11-02 13:35:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-02 13:35:42,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-02 13:35:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.391304347826087) internal successors, (160), 118 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 160 transitions. [2021-11-02 13:35:42,778 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 160 transitions. Word has length 41 [2021-11-02 13:35:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:42,778 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 160 transitions. [2021-11-02 13:35:42,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 160 transitions. [2021-11-02 13:35:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:35:42,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:42,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:42,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:35:42,781 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-02 13:35:42,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:42,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231940719] [2021-11-02 13:35:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:42,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:42,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:42,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231940719] [2021-11-02 13:35:42,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231940719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:42,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:42,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:35:42,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78437264] [2021-11-02 13:35:42,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:35:42,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:35:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:35:42,896 INFO L87 Difference]: Start difference. First operand 119 states and 160 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:43,168 INFO L93 Difference]: Finished difference Result 228 states and 298 transitions. [2021-11-02 13:35:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:35:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:35:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:43,170 INFO L225 Difference]: With dead ends: 228 [2021-11-02 13:35:43,170 INFO L226 Difference]: Without dead ends: 137 [2021-11-02 13:35:43,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:35:43,172 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.19ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:43,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [5 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 246.19ms Time] [2021-11-02 13:35:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-02 13:35:43,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-11-02 13:35:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.373913043478261) internal successors, (158), 118 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2021-11-02 13:35:43,180 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 41 [2021-11-02 13:35:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:43,180 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2021-11-02 13:35:43,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2021-11-02 13:35:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 13:35:43,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:43,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:43,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:35:43,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-02 13:35:43,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:43,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526495076] [2021-11-02 13:35:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:43,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:43,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:43,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526495076] [2021-11-02 13:35:43,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526495076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:43,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:43,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:35:43,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456855586] [2021-11-02 13:35:43,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:35:43,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:35:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:35:43,292 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:43,568 INFO L93 Difference]: Finished difference Result 242 states and 315 transitions. [2021-11-02 13:35:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:35:43,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-02 13:35:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:43,572 INFO L225 Difference]: With dead ends: 242 [2021-11-02 13:35:43,572 INFO L226 Difference]: Without dead ends: 152 [2021-11-02 13:35:43,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 54.08ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:35:43,574 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 458 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 212.05ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:43,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 0 Invalid, 317 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [30 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 212.05ms Time] [2021-11-02 13:35:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-02 13:35:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 119. [2021-11-02 13:35:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 118 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2021-11-02 13:35:43,593 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 45 [2021-11-02 13:35:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:43,594 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2021-11-02 13:35:43,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2021-11-02 13:35:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 13:35:43,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:43,601 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] [2021-11-02 13:35:43,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:35:43,602 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-02 13:35:43,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:43,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744515314] [2021-11-02 13:35:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:43,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:43,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:43,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744515314] [2021-11-02 13:35:43,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744515314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:43,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:43,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:35:43,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949934518] [2021-11-02 13:35:43,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:35:43,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:35:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:35:43,742 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:44,200 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2021-11-02 13:35:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:35:44,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-02 13:35:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:44,202 INFO L225 Difference]: With dead ends: 334 [2021-11-02 13:35:44,202 INFO L226 Difference]: Without dead ends: 243 [2021-11-02 13:35:44,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 74.89ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:35:44,203 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 819 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 368.29ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:44,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 0 Invalid, 526 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [63 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 368.29ms Time] [2021-11-02 13:35:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-02 13:35:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 122. [2021-11-02 13:35:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 121 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 158 transitions. [2021-11-02 13:35:44,211 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 158 transitions. Word has length 49 [2021-11-02 13:35:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:44,211 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 158 transitions. [2021-11-02 13:35:44,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 158 transitions. [2021-11-02 13:35:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 13:35:44,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:44,212 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] [2021-11-02 13:35:44,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 13:35:44,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-02 13:35:44,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:44,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088719098] [2021-11-02 13:35:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:44,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:44,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:44,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088719098] [2021-11-02 13:35:44,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088719098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:44,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:44,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:35:44,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150569434] [2021-11-02 13:35:44,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:35:44,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:35:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:35:44,318 INFO L87 Difference]: Start difference. First operand 122 states and 158 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:44,709 INFO L93 Difference]: Finished difference Result 327 states and 416 transitions. [2021-11-02 13:35:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:35:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-02 13:35:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:44,711 INFO L225 Difference]: With dead ends: 327 [2021-11-02 13:35:44,711 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 13:35:44,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 51.61ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:35:44,712 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 701 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 254.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.14ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 321.08ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:44,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 0 Invalid, 443 Unknown, 0 Unchecked, 4.14ms Time], IncrementalHoareTripleChecker [40 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 321.08ms Time] [2021-11-02 13:35:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 13:35:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 125. [2021-11-02 13:35:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 124 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2021-11-02 13:35:44,720 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 51 [2021-11-02 13:35:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2021-11-02 13:35:44,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2021-11-02 13:35:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:35:44,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:44,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:44,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:35:44,722 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-02 13:35:44,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:44,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140954835] [2021-11-02 13:35:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:44,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:44,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140954835] [2021-11-02 13:35:44,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140954835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:44,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:44,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:35:44,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017643926] [2021-11-02 13:35:44,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:35:44,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:35:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:35:44,781 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:45,038 INFO L93 Difference]: Finished difference Result 244 states and 316 transitions. [2021-11-02 13:35:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:35:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 13:35:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:45,040 INFO L225 Difference]: With dead ends: 244 [2021-11-02 13:35:45,040 INFO L226 Difference]: Without dead ends: 141 [2021-11-02 13:35:45,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:35:45,041 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 232.27ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:45,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 464 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [13 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 232.27ms Time] [2021-11-02 13:35:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-02 13:35:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2021-11-02 13:35:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.310077519379845) internal successors, (169), 132 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2021-11-02 13:35:45,048 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 61 [2021-11-02 13:35:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:45,048 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2021-11-02 13:35:45,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2021-11-02 13:35:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:35:45,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:45,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:45,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:35:45,050 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:45,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:45,051 INFO L85 PathProgramCache]: Analyzing trace with hash -192730163, now seen corresponding path program 1 times [2021-11-02 13:35:45,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:45,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031808827] [2021-11-02 13:35:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:45,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:45,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:45,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031808827] [2021-11-02 13:35:45,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031808827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:45,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:45,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:35:45,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140352042] [2021-11-02 13:35:45,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:35:45,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:35:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:35:45,143 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:45,661 INFO L93 Difference]: Finished difference Result 362 states and 457 transitions. [2021-11-02 13:35:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:35:45,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 13:35:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:45,663 INFO L225 Difference]: With dead ends: 362 [2021-11-02 13:35:45,663 INFO L226 Difference]: Without dead ends: 251 [2021-11-02 13:35:45,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 93.01ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:35:45,665 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 761 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 318.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 412.19ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:45,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 0 Invalid, 703 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [80 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 412.19ms Time] [2021-11-02 13:35:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-02 13:35:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 136. [2021-11-02 13:35:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.303030303030303) internal successors, (172), 135 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 172 transitions. [2021-11-02 13:35:45,672 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 172 transitions. Word has length 61 [2021-11-02 13:35:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:45,672 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 172 transitions. [2021-11-02 13:35:45,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 172 transitions. [2021-11-02 13:35:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:35:45,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:45,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:45,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:35:45,674 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-02 13:35:45,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:45,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697692543] [2021-11-02 13:35:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:45,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:45,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:45,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697692543] [2021-11-02 13:35:45,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697692543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:45,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:45,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:35:45,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820732552] [2021-11-02 13:35:45,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:35:45,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:35:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:35:45,762 INFO L87 Difference]: Start difference. First operand 136 states and 172 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:46,104 INFO L93 Difference]: Finished difference Result 289 states and 354 transitions. [2021-11-02 13:35:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:35:46,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 13:35:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:46,105 INFO L225 Difference]: With dead ends: 289 [2021-11-02 13:35:46,105 INFO L226 Difference]: Without dead ends: 184 [2021-11-02 13:35:46,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.61ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:35:46,106 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 310.38ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:46,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 655 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [11 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 310.38ms Time] [2021-11-02 13:35:46,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-02 13:35:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2021-11-02 13:35:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 135 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2021-11-02 13:35:46,114 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 61 [2021-11-02 13:35:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:46,114 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2021-11-02 13:35:46,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2021-11-02 13:35:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 13:35:46,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:46,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:46,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:35:46,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-02 13:35:46,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:46,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842909435] [2021-11-02 13:35:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:46,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:35:46,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:46,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842909435] [2021-11-02 13:35:46,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842909435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:35:46,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256080319] [2021-11-02 13:35:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:46,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:35:46,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:35:46,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:35:46,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:35:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:46,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-02 13:35:46,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:35:46,593 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:35:46,594 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 50 [2021-11-02 13:35:46,625 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:35:46,626 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 71 treesize of output 54 [2021-11-02 13:35:47,802 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-02 13:35:47,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 89 [2021-11-02 13:35:47,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:35:47,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2021-11-02 13:35:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:35:47,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:35:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:35:48,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256080319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:35:48,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:35:48,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2021-11-02 13:35:48,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173933172] [2021-11-02 13:35:48,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 13:35:48,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 13:35:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:35:48,148 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 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) [2021-11-02 13:35:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:49,383 INFO L93 Difference]: Finished difference Result 599 states and 730 transitions. [2021-11-02 13:35:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 13:35:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 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 65 [2021-11-02 13:35:49,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:49,385 INFO L225 Difference]: With dead ends: 599 [2021-11-02 13:35:49,386 INFO L226 Difference]: Without dead ends: 496 [2021-11-02 13:35:49,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 648.32ms TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:35:49,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 800 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 659.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.71ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1974 IncrementalHoareTripleChecker+Unchecked, 815.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:49,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 0 Invalid, 3249 Unknown, 0 Unchecked, 11.71ms Time], IncrementalHoareTripleChecker [62 Valid, 1213 Invalid, 0 Unknown, 1974 Unchecked, 815.48ms Time] [2021-11-02 13:35:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-02 13:35:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 190. [2021-11-02 13:35:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.2849462365591398) internal successors, (239), 189 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2021-11-02 13:35:49,399 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 65 [2021-11-02 13:35:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2021-11-02 13:35:49,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 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) [2021-11-02 13:35:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2021-11-02 13:35:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 13:35:49,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:49,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:35:49,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 13:35:49,627 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,SelfDestructingSolverStorable11 [2021-11-02 13:35:49,628 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1581899307, now seen corresponding path program 1 times [2021-11-02 13:35:49,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:49,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359122554] [2021-11-02 13:35:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:49,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:35:49,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:49,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359122554] [2021-11-02 13:35:49,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359122554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:35:49,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944585480] [2021-11-02 13:35:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:49,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:35:49,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:35:49,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:35:49,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 13:35:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:49,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:35:49,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:35:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:35:49,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:35:49,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944585480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:49,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:35:49,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-11-02 13:35:49,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99377482] [2021-11-02 13:35:49,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:35:49,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:49,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:35:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:35:49,989 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:50,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:50,247 INFO L93 Difference]: Finished difference Result 349 states and 447 transitions. [2021-11-02 13:35:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:35:50,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 13:35:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:50,248 INFO L225 Difference]: With dead ends: 349 [2021-11-02 13:35:50,248 INFO L226 Difference]: Without dead ends: 175 [2021-11-02 13:35:50,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 52.09ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:35:50,249 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.47ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:50,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [17 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 234.47ms Time] [2021-11-02 13:35:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-02 13:35:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2021-11-02 13:35:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.2453987730061349) internal successors, (203), 166 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 203 transitions. [2021-11-02 13:35:50,259 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 203 transitions. Word has length 65 [2021-11-02 13:35:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:50,260 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 203 transitions. [2021-11-02 13:35:50,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 203 transitions. [2021-11-02 13:35:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:35:50,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:50,261 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 13:35:50,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:35:50,487 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,SelfDestructingSolverStorable12 [2021-11-02 13:35:50,488 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:50,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash 802367164, now seen corresponding path program 1 times [2021-11-02 13:35:50,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:50,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697527899] [2021-11-02 13:35:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:50,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:35:50,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:50,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697527899] [2021-11-02 13:35:50,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697527899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:35:50,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917617739] [2021-11-02 13:35:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:50,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:35:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:35:50,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:35:50,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 13:35:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:50,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 13:35:50,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:35:50,786 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:35:50,787 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 29 treesize of output 17 [2021-11-02 13:35:51,814 INFO L354 Elim1Store]: treesize reduction 17, result has 54.1 percent of original size [2021-11-02 13:35:51,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-11-02 13:35:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:51,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:35:52,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 333 [2021-11-02 13:35:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:35:52,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917617739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:35:52,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:35:52,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 14] total 33 [2021-11-02 13:35:52,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516679210] [2021-11-02 13:35:52,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 13:35:52,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 13:35:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 13:35:52,627 INFO L87 Difference]: Start difference. First operand 167 states and 203 transitions. Second operand has 33 states, 33 states have (on average 4.9393939393939394) internal successors, (163), 33 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:54,339 INFO L93 Difference]: Finished difference Result 455 states and 530 transitions. [2021-11-02 13:35:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 13:35:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.9393939393939394) internal successors, (163), 33 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 13:35:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:54,341 INFO L225 Difference]: With dead ends: 455 [2021-11-02 13:35:54,341 INFO L226 Difference]: Without dead ends: 325 [2021-11-02 13:35:54,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1316.39ms TimeCoverageRelationStatistics Valid=336, Invalid=2744, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 13:35:54,344 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 792 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 790.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.49ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 945.82ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:54,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 0 Invalid, 2675 Unknown, 0 Unchecked, 12.49ms Time], IncrementalHoareTripleChecker [75 Valid, 1794 Invalid, 0 Unknown, 806 Unchecked, 945.82ms Time] [2021-11-02 13:35:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-02 13:35:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 167. [2021-11-02 13:35:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.2453987730061349) internal successors, (203), 166 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 203 transitions. [2021-11-02 13:35:54,353 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 203 transitions. Word has length 66 [2021-11-02 13:35:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:54,354 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 203 transitions. [2021-11-02 13:35:54,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.9393939393939394) internal successors, (163), 33 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 203 transitions. [2021-11-02 13:35:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:35:54,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:54,355 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] [2021-11-02 13:35:54,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 13:35:54,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:35:54,580 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-02 13:35:54,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:54,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257389602] [2021-11-02 13:35:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:54,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:35:55,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:55,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257389602] [2021-11-02 13:35:55,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257389602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:35:55,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42752777] [2021-11-02 13:35:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:55,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:35:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:35:55,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:35:55,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 13:35:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:55,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-02 13:35:55,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:35:55,409 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:35:55,410 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 [2021-11-02 13:35:55,423 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-02 13:35:55,424 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 [2021-11-02 13:35:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:35:58,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:35:58,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42752777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:58,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:35:58,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-11-02 13:35:58,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065850062] [2021-11-02 13:35:58,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:35:58,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:35:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:35:58,689 INFO L87 Difference]: Start difference. First operand 167 states and 203 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:35:58,841 INFO L93 Difference]: Finished difference Result 276 states and 336 transitions. [2021-11-02 13:35:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:35:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 13:35:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:35:58,842 INFO L225 Difference]: With dead ends: 276 [2021-11-02 13:35:58,842 INFO L226 Difference]: Without dead ends: 223 [2021-11-02 13:35:58,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1449.61ms TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:35:58,846 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 435 IncrementalHoareTripleChecker+Unchecked, 115.91ms IncrementalHoareTripleChecker+Time [2021-11-02 13:35:58,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 649 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 435 Unchecked, 115.91ms Time] [2021-11-02 13:35:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-02 13:35:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-11-02 13:35:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 219 states have (on average 1.2420091324200913) internal successors, (272), 222 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 272 transitions. [2021-11-02 13:35:58,857 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 272 transitions. Word has length 67 [2021-11-02 13:35:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:35:58,858 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 272 transitions. [2021-11-02 13:35:58,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:35:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 272 transitions. [2021-11-02 13:35:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:35:58,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:35:58,859 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] [2021-11-02 13:35:58,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 13:35:59,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 13:35:59,080 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:35:59,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:35:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-02 13:35:59,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:35:59,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083251505] [2021-11-02 13:35:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:35:59,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:35:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:35:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:35:59,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:35:59,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083251505] [2021-11-02 13:35:59,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083251505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:35:59,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:35:59,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 13:35:59,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588700346] [2021-11-02 13:35:59,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:35:59,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:35:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:35:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:35:59,286 INFO L87 Difference]: Start difference. First operand 223 states and 272 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:36:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:36:00,083 INFO L93 Difference]: Finished difference Result 499 states and 607 transitions. [2021-11-02 13:36:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:36:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 13:36:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:36:00,085 INFO L225 Difference]: With dead ends: 499 [2021-11-02 13:36:00,085 INFO L226 Difference]: Without dead ends: 445 [2021-11-02 13:36:00,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 163.06ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:36:00,086 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 899 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 531.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 641.23ms IncrementalHoareTripleChecker+Time [2021-11-02 13:36:00,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 0 Invalid, 1203 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [69 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 641.23ms Time] [2021-11-02 13:36:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-02 13:36:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 402. [2021-11-02 13:36:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 398 states have (on average 1.2386934673366834) internal successors, (493), 401 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:36:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 493 transitions. [2021-11-02 13:36:00,106 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 493 transitions. Word has length 67 [2021-11-02 13:36:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:36:00,106 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 493 transitions. [2021-11-02 13:36:00,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:36:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 493 transitions. [2021-11-02 13:36:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:36:00,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:36:00,108 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] [2021-11-02 13:36:00,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 13:36:00,108 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:36:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:36:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-02 13:36:00,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:36:00,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094642833] [2021-11-02 13:36:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:00,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:36:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:36:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:36:00,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:36:00,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094642833] [2021-11-02 13:36:00,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094642833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:36:00,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:36:00,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:36:00,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419796971] [2021-11-02 13:36:00,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:36:00,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:36:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:36:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:36:00,342 INFO L87 Difference]: Start difference. First operand 402 states and 493 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:36:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:36:01,144 INFO L93 Difference]: Finished difference Result 496 states and 600 transitions. [2021-11-02 13:36:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:36:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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 67 [2021-11-02 13:36:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:36:01,146 INFO L225 Difference]: With dead ends: 496 [2021-11-02 13:36:01,146 INFO L226 Difference]: Without dead ends: 440 [2021-11-02 13:36:01,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 192.28ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:36:01,147 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 567 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 524.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 623.93ms IncrementalHoareTripleChecker+Time [2021-11-02 13:36:01,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 0 Invalid, 1006 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [51 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 623.93ms Time] [2021-11-02 13:36:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-02 13:36:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 402. [2021-11-02 13:36:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 398 states have (on average 1.2311557788944723) internal successors, (490), 401 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:36:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 490 transitions. [2021-11-02 13:36:01,177 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 490 transitions. Word has length 67 [2021-11-02 13:36:01,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:36:01,177 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 490 transitions. [2021-11-02 13:36:01,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:36:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 490 transitions. [2021-11-02 13:36:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:36:01,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:36:01,178 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] [2021-11-02 13:36:01,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 13:36:01,180 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:36:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:36:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-02 13:36:01,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:36:01,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149464841] [2021-11-02 13:36:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:01,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:36:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:36:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:36:01,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:36:01,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149464841] [2021-11-02 13:36:01,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149464841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:36:01,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922654795] [2021-11-02 13:36:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:36:01,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:36:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:36:01,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:36:01,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 13:36:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:36:01,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-02 13:36:01,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:36:01,549 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:36:01,550 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 33 treesize of output 29 [2021-11-02 13:36:21,614 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 13:36:31,970 WARN L210 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:36:43,582 WARN L210 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:36:53,064 WARN L210 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:37:03,259 WARN L210 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-02 13:37:10,585 WARN L210 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-02 13:37:20,722 WARN L210 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:37:30,903 WARN L210 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:37:37,721 WARN L210 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:37:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:37:37,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:37:38,054 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 381 treesize of output 365 [2021-11-02 13:37:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:37:38,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922654795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:37:38,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:37:38,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 29 [2021-11-02 13:37:38,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427002931] [2021-11-02 13:37:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-02 13:37:38,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:37:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-02 13:37:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=685, Unknown=7, NotChecked=0, Total=812 [2021-11-02 13:37:38,173 INFO L87 Difference]: Start difference. First operand 402 states and 490 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:37:47,502 WARN L210 SmtUtils]: Spent 9.26s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:38:07,292 WARN L210 SmtUtils]: Spent 19.77s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-11-02 13:38:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:38:08,013 INFO L93 Difference]: Finished difference Result 694 states and 835 transitions. [2021-11-02 13:38:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:38:08,013 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 13:38:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:38:08,015 INFO L225 Difference]: With dead ends: 694 [2021-11-02 13:38:08,015 INFO L226 Difference]: Without dead ends: 616 [2021-11-02 13:38:08,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 124716.12ms TimeCoverageRelationStatistics Valid=145, Invalid=840, Unknown=7, NotChecked=0, Total=992 [2021-11-02 13:38:08,016 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 109 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 587.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 715.07ms IncrementalHoareTripleChecker+Time [2021-11-02 13:38:08,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 0 Invalid, 1796 Unknown, 0 Unchecked, 3.90ms Time], IncrementalHoareTripleChecker [4 Valid, 1576 Invalid, 0 Unknown, 216 Unchecked, 715.07ms Time] [2021-11-02 13:38:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-02 13:38:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 482. [2021-11-02 13:38:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 478 states have (on average 1.2217573221757323) internal successors, (584), 481 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) [2021-11-02 13:38:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 584 transitions. [2021-11-02 13:38:08,045 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 584 transitions. Word has length 67 [2021-11-02 13:38:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:38:08,045 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 584 transitions. [2021-11-02 13:38:08,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:38:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 584 transitions. [2021-11-02 13:38:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:38:08,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:38:08,047 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] [2021-11-02 13:38:08,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 13:38:08,271 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,SelfDestructingSolverStorable17 [2021-11-02 13:38:08,272 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:38:08,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:38:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash 27935740, now seen corresponding path program 1 times [2021-11-02 13:38:08,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:38:08,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449624812] [2021-11-02 13:38:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:38:08,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:38:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:38:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:38:08,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:38:08,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449624812] [2021-11-02 13:38:08,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449624812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:38:08,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:38:08,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:38:08,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089420756] [2021-11-02 13:38:08,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:38:08,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:38:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:38:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:38:08,369 INFO L87 Difference]: Start difference. First operand 482 states and 584 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:38:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:38:08,600 INFO L93 Difference]: Finished difference Result 560 states and 676 transitions. [2021-11-02 13:38:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:38:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 13:38:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:38:08,602 INFO L225 Difference]: With dead ends: 560 [2021-11-02 13:38:08,602 INFO L226 Difference]: Without dead ends: 478 [2021-11-02 13:38:08,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.53ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:38:08,603 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.87ms IncrementalHoareTripleChecker+Time [2021-11-02 13:38:08,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 320 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [14 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 178.87ms Time] [2021-11-02 13:38:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-02 13:38:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2021-11-02 13:38:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.2109704641350212) internal successors, (574), 477 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:38:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 574 transitions. [2021-11-02 13:38:08,626 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 574 transitions. Word has length 67 [2021-11-02 13:38:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:38:08,627 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 574 transitions. [2021-11-02 13:38:08,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:38:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 574 transitions. [2021-11-02 13:38:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:38:08,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:38:08,628 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] [2021-11-02 13:38:08,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 13:38:08,628 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:38:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:38:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1383780402, now seen corresponding path program 1 times [2021-11-02 13:38:08,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:38:08,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188687495] [2021-11-02 13:38:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:38:08,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:38:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:38:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:38:08,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:38:08,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188687495] [2021-11-02 13:38:08,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188687495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:38:08,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420707698] [2021-11-02 13:38:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:38:08,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:38:08,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:38:08,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:38:08,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 13:38:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:38:08,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-02 13:38:08,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:38:09,034 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:38:09,035 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 33 treesize of output 29 [2021-11-02 13:38:20,492 WARN L210 SmtUtils]: Spent 7.43s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 13:38:30,552 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:38:40,724 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:38:50,801 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:38:59,212 WARN L210 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-02 13:39:07,282 WARN L210 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-02 13:39:17,318 WARN L210 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:39:25,485 WARN L210 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:39:33,564 WARN L210 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:39:41,663 WARN L210 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:39:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:39:41,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:39:42,118 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 381 treesize of output 365 [2021-11-02 13:39:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:39:42,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420707698] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:39:42,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:39:42,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2021-11-02 13:39:42,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268355930] [2021-11-02 13:39:42,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 13:39:42,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:39:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 13:39:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1210, Unknown=2, NotChecked=0, Total=1332 [2021-11-02 13:39:42,273 INFO L87 Difference]: Start difference. First operand 478 states and 574 transitions. Second operand has 37 states, 37 states have (on average 4.135135135135135) internal successors, (153), 37 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:39:52,423 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:40:12,162 WARN L210 SmtUtils]: Spent 19.70s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-11-02 13:40:22,206 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:40:32,157 WARN L210 SmtUtils]: Spent 9.93s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:40:49,625 WARN L210 SmtUtils]: Spent 17.44s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-11-02 13:40:59,669 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-02 13:41:07,706 WARN L210 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 29 [2021-11-02 13:41:15,777 WARN L210 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-02 13:41:25,846 WARN L210 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-02 13:41:31,985 WARN L210 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-02 13:41:40,031 WARN L210 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-02 13:41:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:41:41,268 INFO L93 Difference]: Finished difference Result 757 states and 915 transitions. [2021-11-02 13:41:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:41:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.135135135135135) internal successors, (153), 37 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 13:41:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:41:41,270 INFO L225 Difference]: With dead ends: 757 [2021-11-02 13:41:41,270 INFO L226 Difference]: Without dead ends: 577 [2021-11-02 13:41:41,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 210276.03ms TimeCoverageRelationStatistics Valid=228, Invalid=2320, Unknown=2, NotChecked=0, Total=2550 [2021-11-02 13:41:41,285 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 131 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 986.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 1206.24ms IncrementalHoareTripleChecker+Time [2021-11-02 13:41:41,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 0 Invalid, 3292 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [8 Valid, 2781 Invalid, 0 Unknown, 503 Unchecked, 1206.24ms Time] [2021-11-02 13:41:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-02 13:41:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 478. [2021-11-02 13:41:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.2067510548523206) internal successors, (572), 477 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:41:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 572 transitions. [2021-11-02 13:41:41,312 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 572 transitions. Word has length 67 [2021-11-02 13:41:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:41:41,312 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 572 transitions. [2021-11-02 13:41:41,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.135135135135135) internal successors, (153), 37 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:41:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 572 transitions. [2021-11-02 13:41:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:41:41,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:41:41,314 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] [2021-11-02 13:41:41,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 13:41:41,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:41:41,534 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:41:41,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:41:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1201768910, now seen corresponding path program 1 times [2021-11-02 13:41:41,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:41:41,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406687246] [2021-11-02 13:41:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:41:41,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:41:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:41:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:41:41,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:41:41,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406687246] [2021-11-02 13:41:41,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406687246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:41:41,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856945393] [2021-11-02 13:41:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:41:41,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:41:41,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:41:41,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:41:41,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 13:41:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:41:41,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-02 13:41:41,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:41:41,856 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:41:41,857 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 33 treesize of output 29 [2021-11-02 13:41:55,890 WARN L210 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 13:42:05,948 WARN L210 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 13:42:15,776 WARN L210 SmtUtils]: Spent 9.73s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 13:42:27,832 WARN L210 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:42:39,904 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:42:51,983 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:43:02,610 WARN L210 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:43:04,688 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 [2021-11-02 13:43:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:43:08,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:43:09,086 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 381 treesize of output 365 [2021-11-02 13:43:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:43:09,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856945393] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:43:09,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:43:09,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2021-11-02 13:43:09,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374265397] [2021-11-02 13:43:09,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 13:43:09,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:43:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 13:43:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=806, Unknown=9, NotChecked=0, Total=930 [2021-11-02 13:43:09,227 INFO L87 Difference]: Start difference. First operand 478 states and 572 transitions. Second operand has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:43:19,335 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:43:29,380 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-02 13:43:39,428 WARN L210 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:43:48,562 WARN L210 SmtUtils]: Spent 9.12s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:44:01,995 WARN L210 SmtUtils]: Spent 9.40s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-02 13:44:14,417 WARN L210 SmtUtils]: Spent 8.39s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-02 13:44:26,453 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-02 13:44:38,354 WARN L210 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-02 13:44:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:44:45,315 INFO L93 Difference]: Finished difference Result 839 states and 1007 transitions. [2021-11-02 13:44:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 13:44:45,316 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 13:44:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:44:45,318 INFO L225 Difference]: With dead ends: 839 [2021-11-02 13:44:45,318 INFO L226 Difference]: Without dead ends: 621 [2021-11-02 13:44:45,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 182038.20ms TimeCoverageRelationStatistics Valid=242, Invalid=1546, Unknown=18, NotChecked=0, Total=1806 [2021-11-02 13:44:45,319 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 182 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 740.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 482 IncrementalHoareTripleChecker+Unchecked, 906.31ms IncrementalHoareTripleChecker+Time [2021-11-02 13:44:45,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 0 Invalid, 2765 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [11 Valid, 2272 Invalid, 0 Unknown, 482 Unchecked, 906.31ms Time] [2021-11-02 13:44:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-02 13:44:45,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 496. [2021-11-02 13:44:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 492 states have (on average 1.2073170731707317) internal successors, (594), 495 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 594 transitions. [2021-11-02 13:44:45,346 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 594 transitions. Word has length 67 [2021-11-02 13:44:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:44:45,347 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 594 transitions. [2021-11-02 13:44:45,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 594 transitions. [2021-11-02 13:44:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 13:44:45,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:44:45,348 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] [2021-11-02 13:44:45,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 13:44:45,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:44:45,572 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:44:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:44:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1384277337, now seen corresponding path program 1 times [2021-11-02 13:44:45,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:44:45,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552352832] [2021-11-02 13:44:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:45,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:44:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:44:45,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:44:45,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552352832] [2021-11-02 13:44:45,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552352832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:44:45,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:44:45,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:44:45,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130071120] [2021-11-02 13:44:45,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:44:45,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:44:45,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:44:45,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:44:45,671 INFO L87 Difference]: Start difference. First operand 496 states and 594 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:44:45,876 INFO L93 Difference]: Finished difference Result 566 states and 678 transitions. [2021-11-02 13:44:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:44:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 69 [2021-11-02 13:44:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:44:45,879 INFO L225 Difference]: With dead ends: 566 [2021-11-02 13:44:45,880 INFO L226 Difference]: Without dead ends: 496 [2021-11-02 13:44:45,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.21ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:44:45,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 545 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.87ms IncrementalHoareTripleChecker+Time [2021-11-02 13:44:45,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 0 Invalid, 228 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [29 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 152.87ms Time] [2021-11-02 13:44:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-02 13:44:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-11-02 13:44:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 492 states have (on average 1.2032520325203253) internal successors, (592), 495 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 592 transitions. [2021-11-02 13:44:45,916 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 592 transitions. Word has length 69 [2021-11-02 13:44:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:44:45,917 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 592 transitions. [2021-11-02 13:44:45,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 592 transitions. [2021-11-02 13:44:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 13:44:45,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:44:45,918 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] [2021-11-02 13:44:45,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 13:44:45,919 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:44:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:44:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash 80619544, now seen corresponding path program 1 times [2021-11-02 13:44:45,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:44:45,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682764946] [2021-11-02 13:44:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:45,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:44:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:44:46,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:44:46,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682764946] [2021-11-02 13:44:46,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682764946] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:44:46,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013495862] [2021-11-02 13:44:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:46,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:44:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:44:46,128 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:44:46,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 13:44:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:46,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 13:44:46,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:44:46,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:44:46,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:44:46,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-02 13:44:46,468 INFO L354 Elim1Store]: treesize reduction 124, result has 18.4 percent of original size [2021-11-02 13:44:46,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 54 [2021-11-02 13:44:47,122 INFO L354 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2021-11-02 13:44:47,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 36 [2021-11-02 13:44:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:44:47,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:44:53,130 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 26146 treesize of output 25890 [2021-11-02 13:44:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:44:55,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013495862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:44:55,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:44:55,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-11-02 13:44:55,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188895145] [2021-11-02 13:44:55,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 13:44:55,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:44:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 13:44:55,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=583, Unknown=2, NotChecked=0, Total=650 [2021-11-02 13:44:55,779 INFO L87 Difference]: Start difference. First operand 496 states and 592 transitions. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:57,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:44:57,464 INFO L93 Difference]: Finished difference Result 755 states and 894 transitions. [2021-11-02 13:44:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:44:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 13:44:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:44:57,467 INFO L225 Difference]: With dead ends: 755 [2021-11-02 13:44:57,467 INFO L226 Difference]: Without dead ends: 606 [2021-11-02 13:44:57,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 6463.55ms TimeCoverageRelationStatistics Valid=151, Invalid=1107, Unknown=2, NotChecked=0, Total=1260 [2021-11-02 13:44:57,468 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 984 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1073.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 1284.63ms IncrementalHoareTripleChecker+Time [2021-11-02 13:44:57,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 0 Invalid, 3144 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [44 Valid, 2820 Invalid, 0 Unknown, 280 Unchecked, 1284.63ms Time] [2021-11-02 13:44:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-02 13:44:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 457. [2021-11-02 13:44:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 453 states have (on average 1.2097130242825607) internal successors, (548), 456 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 548 transitions. [2021-11-02 13:44:57,496 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 548 transitions. Word has length 69 [2021-11-02 13:44:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:44:57,497 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 548 transitions. [2021-11-02 13:44:57,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 548 transitions. [2021-11-02 13:44:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 13:44:57,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:44:57,498 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] [2021-11-02 13:44:57,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-02 13:44:57,711 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,SelfDestructingSolverStorable22 [2021-11-02 13:44:57,712 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:44:57,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:44:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1251736731, now seen corresponding path program 1 times [2021-11-02 13:44:57,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:44:57,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650679686] [2021-11-02 13:44:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:57,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:44:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:44:57,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:44:57,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650679686] [2021-11-02 13:44:57,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650679686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:44:57,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:44:57,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:44:57,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989611969] [2021-11-02 13:44:57,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:44:57,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:44:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:44:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:44:57,863 INFO L87 Difference]: Start difference. First operand 457 states and 548 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:44:58,533 INFO L93 Difference]: Finished difference Result 935 states and 1112 transitions. [2021-11-02 13:44:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:44:58,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 13:44:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:44:58,538 INFO L225 Difference]: With dead ends: 935 [2021-11-02 13:44:58,538 INFO L226 Difference]: Without dead ends: 717 [2021-11-02 13:44:58,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 130.67ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:44:58,539 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 330 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 439.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 537.40ms IncrementalHoareTripleChecker+Time [2021-11-02 13:44:58,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 0 Invalid, 1032 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [54 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 537.40ms Time] [2021-11-02 13:44:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-11-02 13:44:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 453. [2021-11-02 13:44:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 449 states have (on average 1.200445434298441) internal successors, (539), 452 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 539 transitions. [2021-11-02 13:44:58,568 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 539 transitions. Word has length 74 [2021-11-02 13:44:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:44:58,568 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 539 transitions. [2021-11-02 13:44:58,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 539 transitions. [2021-11-02 13:44:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 13:44:58,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:44:58,570 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] [2021-11-02 13:44:58,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 13:44:58,570 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:44:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:44:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash -829034905, now seen corresponding path program 1 times [2021-11-02 13:44:58,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:44:58,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146055740] [2021-11-02 13:44:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:58,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:44:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:44:58,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:44:58,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146055740] [2021-11-02 13:44:58,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146055740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:44:58,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:44:58,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:44:58,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438105816] [2021-11-02 13:44:58,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:44:58,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:44:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:44:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:44:58,640 INFO L87 Difference]: Start difference. First operand 453 states and 539 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:44:59,061 INFO L93 Difference]: Finished difference Result 757 states and 898 transitions. [2021-11-02 13:44:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:44:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 13:44:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:44:59,063 INFO L225 Difference]: With dead ends: 757 [2021-11-02 13:44:59,063 INFO L226 Difference]: Without dead ends: 531 [2021-11-02 13:44:59,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.66ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:44:59,064 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 362.87ms IncrementalHoareTripleChecker+Time [2021-11-02 13:44:59,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 726 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [15 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 362.87ms Time] [2021-11-02 13:44:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-11-02 13:44:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 429. [2021-11-02 13:44:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.188235294117647) internal successors, (505), 428 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 505 transitions. [2021-11-02 13:44:59,087 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 505 transitions. Word has length 74 [2021-11-02 13:44:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:44:59,087 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 505 transitions. [2021-11-02 13:44:59,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:44:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 505 transitions. [2021-11-02 13:44:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:44:59,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:44:59,089 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 13:44:59,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 13:44:59,089 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:44:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:44:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -292936060, now seen corresponding path program 1 times [2021-11-02 13:44:59,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:44:59,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863193801] [2021-11-02 13:44:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:59,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:44:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:44:59,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:44:59,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863193801] [2021-11-02 13:44:59,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863193801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:44:59,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35109142] [2021-11-02 13:44:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:44:59,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:44:59,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:44:59,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:44:59,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 13:44:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:44:59,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 13:44:59,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:44:59,472 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 11 [2021-11-02 13:44:59,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:44:59,702 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 23 treesize of output 22 [2021-11-02 13:44:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:44:59,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:44:59,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-11-02 13:44:59,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:44:59,905 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 27 treesize of output 26 [2021-11-02 13:45:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:45:00,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35109142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:45:00,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:45:00,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2021-11-02 13:45:00,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490518968] [2021-11-02 13:45:00,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-02 13:45:00,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:45:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-02 13:45:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2021-11-02 13:45:00,064 INFO L87 Difference]: Start difference. First operand 429 states and 505 transitions. Second operand has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:45:01,735 INFO L93 Difference]: Finished difference Result 819 states and 975 transitions. [2021-11-02 13:45:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-02 13:45:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:45:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:45:01,737 INFO L225 Difference]: With dead ends: 819 [2021-11-02 13:45:01,737 INFO L226 Difference]: Without dead ends: 613 [2021-11-02 13:45:01,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1028.85ms TimeCoverageRelationStatistics Valid=698, Invalid=3334, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 13:45:01,738 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 352 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 774.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 933.12ms IncrementalHoareTripleChecker+Time [2021-11-02 13:45:01,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 0 Invalid, 2573 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [85 Valid, 2281 Invalid, 0 Unknown, 207 Unchecked, 933.12ms Time] [2021-11-02 13:45:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-02 13:45:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 457. [2021-11-02 13:45:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 453 states have (on average 1.1898454746136866) internal successors, (539), 456 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 539 transitions. [2021-11-02 13:45:01,773 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 539 transitions. Word has length 75 [2021-11-02 13:45:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:45:01,774 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 539 transitions. [2021-11-02 13:45:01,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 539 transitions. [2021-11-02 13:45:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:45:01,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:45:01,775 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] [2021-11-02 13:45:01,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-02 13:45:01,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 13:45:01,992 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:45:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:45:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash -426949566, now seen corresponding path program 1 times [2021-11-02 13:45:01,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:45:01,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234308120] [2021-11-02 13:45:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:01,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:45:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 13:45:02,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:45:02,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234308120] [2021-11-02 13:45:02,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234308120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:45:02,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:45:02,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:45:02,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112229603] [2021-11-02 13:45:02,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:45:02,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:45:02,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:45:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:45:02,050 INFO L87 Difference]: Start difference. First operand 457 states and 539 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:45:02,284 INFO L93 Difference]: Finished difference Result 767 states and 912 transitions. [2021-11-02 13:45:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:45:02,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:45:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:45:02,286 INFO L225 Difference]: With dead ends: 767 [2021-11-02 13:45:02,286 INFO L226 Difference]: Without dead ends: 491 [2021-11-02 13:45:02,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:45:02,287 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.62ms IncrementalHoareTripleChecker+Time [2021-11-02 13:45:02,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 330 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [17 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 197.62ms Time] [2021-11-02 13:45:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-02 13:45:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 439. [2021-11-02 13:45:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 435 states have (on average 1.160919540229885) internal successors, (505), 438 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 505 transitions. [2021-11-02 13:45:02,314 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 505 transitions. Word has length 75 [2021-11-02 13:45:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:45:02,315 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 505 transitions. [2021-11-02 13:45:02,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 505 transitions. [2021-11-02 13:45:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:45:02,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:45:02,316 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] [2021-11-02 13:45:02,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 13:45:02,317 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:45:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:45:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1620082764, now seen corresponding path program 2 times [2021-11-02 13:45:02,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:45:02,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628941151] [2021-11-02 13:45:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:02,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:45:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:45:02,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:45:02,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628941151] [2021-11-02 13:45:02,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628941151] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:45:02,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922439566] [2021-11-02 13:45:02,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 13:45:02,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:45:02,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:45:02,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:45:02,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 13:45:02,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 13:45:02,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 13:45:02,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 13:45:02,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:45:02,651 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:45:02,652 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 50 [2021-11-02 13:45:02,669 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:45:02,669 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 71 treesize of output 54 [2021-11-02 13:45:08,217 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-02 13:45:08,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-02 13:45:08,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:45:08,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 95 [2021-11-02 13:45:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 13:45:08,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:45:08,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922439566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:45:08,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:45:08,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2021-11-02 13:45:08,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383035576] [2021-11-02 13:45:08,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:45:08,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:45:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:45:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:45:08,359 INFO L87 Difference]: Start difference. First operand 439 states and 505 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:45:08,543 INFO L93 Difference]: Finished difference Result 518 states and 597 transitions. [2021-11-02 13:45:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:45:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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 75 [2021-11-02 13:45:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:45:08,545 INFO L225 Difference]: With dead ends: 518 [2021-11-02 13:45:08,545 INFO L226 Difference]: Without dead ends: 442 [2021-11-02 13:45:08,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3794.88ms TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:45:08,546 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 134.66ms IncrementalHoareTripleChecker+Time [2021-11-02 13:45:08,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 630 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 311 Unchecked, 134.66ms Time] [2021-11-02 13:45:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-02 13:45:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 423. [2021-11-02 13:45:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 419 states have (on average 1.1575178997613365) internal successors, (485), 422 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 485 transitions. [2021-11-02 13:45:08,572 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 485 transitions. Word has length 75 [2021-11-02 13:45:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:45:08,572 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 485 transitions. [2021-11-02 13:45:08,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 485 transitions. [2021-11-02 13:45:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:45:08,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:45:08,574 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 13:45:08,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 13:45:08,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-02 13:45:08,788 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:45:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:45:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 39188996, now seen corresponding path program 1 times [2021-11-02 13:45:08,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:45:08,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849869619] [2021-11-02 13:45:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:08,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:45:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 13:45:08,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:45:08,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849869619] [2021-11-02 13:45:08,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849869619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:45:08,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:45:08,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:45:08,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480595935] [2021-11-02 13:45:08,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:45:08,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:45:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:45:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:45:08,887 INFO L87 Difference]: Start difference. First operand 423 states and 485 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:45:09,329 INFO L93 Difference]: Finished difference Result 718 states and 829 transitions. [2021-11-02 13:45:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:45:09,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:45:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:45:09,330 INFO L225 Difference]: With dead ends: 718 [2021-11-02 13:45:09,330 INFO L226 Difference]: Without dead ends: 433 [2021-11-02 13:45:09,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 62.20ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:45:09,331 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 216 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 382.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:45:09,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 0 Invalid, 848 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [26 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 382.48ms Time] [2021-11-02 13:45:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-02 13:45:09,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 250. [2021-11-02 13:45:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.1382113821138211) internal successors, (280), 249 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2021-11-02 13:45:09,350 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 75 [2021-11-02 13:45:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:45:09,350 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2021-11-02 13:45:09,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2021-11-02 13:45:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:45:09,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:45:09,351 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] [2021-11-02 13:45:09,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 13:45:09,352 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:45:09,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:45:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash 841974699, now seen corresponding path program 1 times [2021-11-02 13:45:09,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:45:09,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194850907] [2021-11-02 13:45:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:09,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:45:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:45:09,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:45:09,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194850907] [2021-11-02 13:45:09,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194850907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:45:09,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674890799] [2021-11-02 13:45:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:09,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:45:09,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:45:09,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:45:09,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 13:45:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:09,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-02 13:45:09,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:45:09,979 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 14 treesize of output 15 [2021-11-02 13:45:09,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-11-02 13:45:11,566 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-02 13:45:11,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 68 [2021-11-02 13:45:11,573 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-02 13:45:11,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 28 [2021-11-02 13:45:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:45:11,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:45:12,571 INFO L354 Elim1Store]: treesize reduction 331, result has 32.4 percent of original size [2021-11-02 13:45:12,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 4734 treesize of output 4408 [2021-11-02 13:45:12,843 INFO L354 Elim1Store]: treesize reduction 453, result has 25.0 percent of original size [2021-11-02 13:45:12,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 24861 treesize of output 23481 [2021-11-02 13:45:14,191 INFO L354 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2021-11-02 13:45:14,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 17529 treesize of output 17033 [2021-11-02 13:45:14,347 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-02 13:45:14,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 17033 treesize of output 16681 [2021-11-02 13:45:14,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:45:14,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:45:14,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 291 treesize of output 315 [2021-11-02 13:45:17,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:45:17,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:45:17,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 15726 treesize of output 15680 [2021-11-02 13:45:17,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-02 13:45:17,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:45:17,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-02 13:45:17,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633894358] [2021-11-02 13:45:17,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 13:45:17,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:45:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 13:45:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1891, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 13:45:17,197 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:45:21,789 INFO L93 Difference]: Finished difference Result 517 states and 563 transitions. [2021-11-02 13:45:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 13:45:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:45:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:45:21,792 INFO L225 Difference]: With dead ends: 517 [2021-11-02 13:45:21,792 INFO L226 Difference]: Without dead ends: 462 [2021-11-02 13:45:21,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 4195.94ms TimeCoverageRelationStatistics Valid=1242, Invalid=5078, Unknown=0, NotChecked=0, Total=6320 [2021-11-02 13:45:21,794 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2314 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1262.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.37ms SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1481.88ms IncrementalHoareTripleChecker+Time [2021-11-02 13:45:21,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 0 Invalid, 2688 Unknown, 0 Unchecked, 9.37ms Time], IncrementalHoareTripleChecker [322 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 1481.88ms Time] [2021-11-02 13:45:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-02 13:45:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 263. [2021-11-02 13:45:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.138996138996139) internal successors, (295), 262 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 295 transitions. [2021-11-02 13:45:21,818 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 295 transitions. Word has length 77 [2021-11-02 13:45:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:45:21,818 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 295 transitions. [2021-11-02 13:45:21,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:45:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 295 transitions. [2021-11-02 13:45:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:45:21,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:45:21,819 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] [2021-11-02 13:45:21,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 13:45:22,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:45:22,044 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:45:22,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:45:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 32628073, now seen corresponding path program 1 times [2021-11-02 13:45:22,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:45:22,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258943553] [2021-11-02 13:45:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:22,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:45:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:45:22,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:45:22,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258943553] [2021-11-02 13:45:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258943553] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:45:22,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891381204] [2021-11-02 13:45:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:45:22,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:45:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:45:22,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:45:22,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 13:45:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:45:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-02 13:45:22,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:45:22,530 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:45:22,531 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 33 treesize of output 29 [2021-11-02 13:45:41,057 WARN L210 SmtUtils]: Spent 8.49s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-02 13:45:53,124 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:46:05,039 WARN L210 SmtUtils]: Spent 9.75s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:46:15,109 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-02 13:46:25,328 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-02 13:46:33,230 WARN L210 SmtUtils]: Spent 7.84s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-02 13:46:41,384 WARN L210 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-02 13:46:49,565 WARN L210 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:46:57,744 WARN L210 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:47:05,899 WARN L210 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:47:15,983 WARN L210 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:47:23,998 WARN L210 SmtUtils]: Spent 7.93s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:47:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:47:24,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:47:24,322 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 381 treesize of output 365 [2021-11-02 13:47:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:47:24,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891381204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:47:24,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:47:24,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 35 [2021-11-02 13:47:24,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455161338] [2021-11-02 13:47:24,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 13:47:24,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:47:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 13:47:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1048, Unknown=7, NotChecked=0, Total=1190 [2021-11-02 13:47:24,437 INFO L87 Difference]: Start difference. First operand 263 states and 295 transitions. Second operand has 35 states, 35 states have (on average 4.8) internal successors, (168), 35 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:47:34,540 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-02 13:47:54,606 WARN L210 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-11-02 13:47:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:47:54,929 INFO L93 Difference]: Finished difference Result 384 states and 425 transitions. [2021-11-02 13:47:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:47:54,929 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.8) internal successors, (168), 35 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:47:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:47:54,930 INFO L225 Difference]: With dead ends: 384 [2021-11-02 13:47:54,930 INFO L226 Difference]: Without dead ends: 323 [2021-11-02 13:47:54,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 151029.89ms TimeCoverageRelationStatistics Valid=160, Invalid=1239, Unknown=7, NotChecked=0, Total=1406 [2021-11-02 13:47:54,931 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 358.42ms IncrementalHoareTripleChecker+Time [2021-11-02 13:47:54,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 1153 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [3 Valid, 850 Invalid, 0 Unknown, 300 Unchecked, 358.42ms Time] [2021-11-02 13:47:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-02 13:47:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 314. [2021-11-02 13:47:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.1225806451612903) internal successors, (348), 313 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:47:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 348 transitions. [2021-11-02 13:47:54,956 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 348 transitions. Word has length 77 [2021-11-02 13:47:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:47:54,957 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 348 transitions. [2021-11-02 13:47:54,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.8) internal successors, (168), 35 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:47:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 348 transitions. [2021-11-02 13:47:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:47:54,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:47:54,958 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] [2021-11-02 13:47:54,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-02 13:47:55,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:47:55,176 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:47:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:47:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 420906986, now seen corresponding path program 2 times [2021-11-02 13:47:55,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:47:55,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413188464] [2021-11-02 13:47:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:47:55,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:47:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:47:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:47:55,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:47:55,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413188464] [2021-11-02 13:47:55,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413188464] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:47:55,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323000484] [2021-11-02 13:47:55,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 13:47:55,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:47:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:47:55,377 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:47:55,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 13:47:55,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 13:47:55,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 13:47:55,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-02 13:47:55,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:47:55,566 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:47:55,566 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 [2021-11-02 13:47:55,575 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-02 13:47:55,576 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 [2021-11-02 13:47:56,916 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-02 13:47:56,916 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 81 treesize of output 56 [2021-11-02 13:47:56,924 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:47:56,925 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 50 treesize of output 45 [2021-11-02 13:47:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 13:47:56,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:47:56,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323000484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:47:56,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:47:56,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2021-11-02 13:47:56,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186128413] [2021-11-02 13:47:56,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:47:56,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:47:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:47:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:47:56,979 INFO L87 Difference]: Start difference. First operand 314 states and 348 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:47:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:47:58,226 INFO L93 Difference]: Finished difference Result 369 states and 411 transitions. [2021-11-02 13:47:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:47:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 77 [2021-11-02 13:47:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:47:58,227 INFO L225 Difference]: With dead ends: 369 [2021-11-02 13:47:58,227 INFO L226 Difference]: Without dead ends: 314 [2021-11-02 13:47:58,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1064.13ms TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:47:58,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 457 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 380.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 451.46ms IncrementalHoareTripleChecker+Time [2021-11-02 13:47:58,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 0 Invalid, 787 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 451.46ms Time] [2021-11-02 13:47:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-02 13:47:58,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-02 13:47:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.1161290322580646) internal successors, (346), 313 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:47:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 346 transitions. [2021-11-02 13:47:58,249 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 346 transitions. Word has length 77 [2021-11-02 13:47:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:47:58,250 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 346 transitions. [2021-11-02 13:47:58,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:47:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 346 transitions. [2021-11-02 13:47:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:47:58,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:47:58,251 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] [2021-11-02 13:47:58,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-02 13:47:58,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-02 13:47:58,455 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:47:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:47:58,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2099052948, now seen corresponding path program 1 times [2021-11-02 13:47:58,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:47:58,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992491806] [2021-11-02 13:47:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:47:58,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:47:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:47:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:47:58,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:47:58,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992491806] [2021-11-02 13:47:58,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992491806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:47:58,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340966625] [2021-11-02 13:47:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:47:58,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:47:58,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:47:58,676 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:47:58,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 13:47:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:47:58,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-02 13:47:58,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:47:58,881 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:47:58,881 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 50 [2021-11-02 13:47:58,899 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:47:58,900 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 71 treesize of output 54 [2021-11-02 13:48:00,931 INFO L354 Elim1Store]: treesize reduction 52, result has 35.0 percent of original size [2021-11-02 13:48:00,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 93 [2021-11-02 13:48:01,019 INFO L354 Elim1Store]: treesize reduction 50, result has 65.8 percent of original size [2021-11-02 13:48:01,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 144 [2021-11-02 13:48:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:48:01,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:48:01,980 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 959 treesize of output 943 [2021-11-02 13:48:02,364 INFO L354 Elim1Store]: treesize reduction 301, result has 39.6 percent of original size [2021-11-02 13:48:02,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 6445 treesize of output 5943 [2021-11-02 13:48:02,500 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-02 13:48:02,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 5596 treesize of output 5014 [2021-11-02 13:48:03,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:48:03,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:48:03,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2021-11-02 13:48:06,969 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 7 treesize of output 5 [2021-11-02 13:48:07,002 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 17 treesize of output 13 [2021-11-02 13:48:07,073 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 18 treesize of output 14 [2021-11-02 13:48:07,181 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-02 13:48:07,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:48:07,334 INFO L354 Elim1Store]: treesize reduction 30, result has 62.0 percent of original size [2021-11-02 13:48:07,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 215 treesize of output 227 [2021-11-02 13:48:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:48:07,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340966625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:48:07,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:48:07,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 15] total 36 [2021-11-02 13:48:07,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024543952] [2021-11-02 13:48:07,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 13:48:07,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 13:48:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 13:48:07,886 INFO L87 Difference]: Start difference. First operand 314 states and 346 transitions. Second operand has 36 states, 36 states have (on average 5.222222222222222) internal successors, (188), 36 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:13,959 INFO L93 Difference]: Finished difference Result 773 states and 855 transitions. [2021-11-02 13:48:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 13:48:13,960 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.222222222222222) internal successors, (188), 36 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:48:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:13,961 INFO L225 Difference]: With dead ends: 773 [2021-11-02 13:48:13,962 INFO L226 Difference]: Without dead ends: 616 [2021-11-02 13:48:13,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5301.50ms TimeCoverageRelationStatistics Valid=383, Invalid=2923, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 13:48:13,963 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 188 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1345.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.99ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 1577.35ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:13,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 0 Invalid, 3744 Unknown, 0 Unchecked, 6.99ms Time], IncrementalHoareTripleChecker [47 Valid, 3347 Invalid, 0 Unknown, 350 Unchecked, 1577.35ms Time] [2021-11-02 13:48:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-02 13:48:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 405. [2021-11-02 13:48:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 401 states have (on average 1.0997506234413965) internal successors, (441), 404 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 441 transitions. [2021-11-02 13:48:14,003 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 441 transitions. Word has length 77 [2021-11-02 13:48:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:14,003 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 441 transitions. [2021-11-02 13:48:14,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.222222222222222) internal successors, (188), 36 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 441 transitions. [2021-11-02 13:48:14,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:48:14,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:14,004 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] [2021-11-02 13:48:14,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 13:48:14,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:14,225 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:14,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash 561523053, now seen corresponding path program 1 times [2021-11-02 13:48:14,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:14,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051577967] [2021-11-02 13:48:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:14,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:48:14,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:14,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051577967] [2021-11-02 13:48:14,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051577967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:48:14,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:48:14,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:48:14,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627789110] [2021-11-02 13:48:14,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:48:14,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:48:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:48:14,286 INFO L87 Difference]: Start difference. First operand 405 states and 441 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) 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) [2021-11-02 13:48:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:14,620 INFO L93 Difference]: Finished difference Result 476 states and 518 transitions. [2021-11-02 13:48:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:48:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) 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 80 [2021-11-02 13:48:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:14,622 INFO L225 Difference]: With dead ends: 476 [2021-11-02 13:48:14,622 INFO L226 Difference]: Without dead ends: 468 [2021-11-02 13:48:14,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.46ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:48:14,622 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.98ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:14,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 599 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [11 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 277.98ms Time] [2021-11-02 13:48:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-02 13:48:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 413. [2021-11-02 13:48:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 409 states have (on average 1.0953545232273838) internal successors, (448), 412 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 448 transitions. [2021-11-02 13:48:14,673 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 448 transitions. Word has length 80 [2021-11-02 13:48:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:14,673 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 448 transitions. [2021-11-02 13:48:14,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) 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) [2021-11-02 13:48:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 448 transitions. [2021-11-02 13:48:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:48:14,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:14,674 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] [2021-11-02 13:48:14,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 13:48:14,675 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1542092017, now seen corresponding path program 1 times [2021-11-02 13:48:14,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:14,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705651810] [2021-11-02 13:48:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:14,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:48:14,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:14,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705651810] [2021-11-02 13:48:14,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705651810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:48:14,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:48:14,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:48:14,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867129824] [2021-11-02 13:48:14,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:48:14,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:48:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:48:14,756 INFO L87 Difference]: Start difference. First operand 413 states and 448 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:14,979 INFO L93 Difference]: Finished difference Result 413 states and 448 transitions. [2021-11-02 13:48:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:48:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 13:48:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:14,980 INFO L225 Difference]: With dead ends: 413 [2021-11-02 13:48:14,980 INFO L226 Difference]: Without dead ends: 411 [2021-11-02 13:48:14,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:48:14,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.22ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:14,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 298 Unknown, 0 Unchecked, 0.46ms Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 180.22ms Time] [2021-11-02 13:48:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-02 13:48:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2021-11-02 13:48:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 408 states have (on average 1.0906862745098038) internal successors, (445), 410 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 445 transitions. [2021-11-02 13:48:15,022 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 445 transitions. Word has length 82 [2021-11-02 13:48:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:15,022 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 445 transitions. [2021-11-02 13:48:15,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 445 transitions. [2021-11-02 13:48:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:48:15,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:15,024 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] [2021-11-02 13:48:15,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 13:48:15,024 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1488938402, now seen corresponding path program 1 times [2021-11-02 13:48:15,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:15,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643128390] [2021-11-02 13:48:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:15,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:48:15,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:15,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643128390] [2021-11-02 13:48:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643128390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:48:15,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:48:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:48:15,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719425303] [2021-11-02 13:48:15,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:48:15,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:48:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:48:15,181 INFO L87 Difference]: Start difference. First operand 411 states and 445 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) [2021-11-02 13:48:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:15,558 INFO L93 Difference]: Finished difference Result 411 states and 445 transitions. [2021-11-02 13:48:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:48:15,558 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 85 [2021-11-02 13:48:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:15,560 INFO L225 Difference]: With dead ends: 411 [2021-11-02 13:48:15,560 INFO L226 Difference]: Without dead ends: 409 [2021-11-02 13:48:15,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 109.31ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:48:15,560 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.80ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:15,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 398 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [14 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 258.80ms Time] [2021-11-02 13:48:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-02 13:48:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2021-11-02 13:48:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 407 states have (on average 1.085995085995086) internal successors, (442), 408 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 442 transitions. [2021-11-02 13:48:15,613 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 442 transitions. Word has length 85 [2021-11-02 13:48:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:15,613 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 442 transitions. [2021-11-02 13:48:15,614 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) [2021-11-02 13:48:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 442 transitions. [2021-11-02 13:48:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:48:15,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:15,615 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] [2021-11-02 13:48:15,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 13:48:15,616 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1748357123, now seen corresponding path program 1 times [2021-11-02 13:48:15,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:15,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003297542] [2021-11-02 13:48:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:15,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:48:16,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:16,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003297542] [2021-11-02 13:48:16,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003297542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:16,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855728489] [2021-11-02 13:48:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:16,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:48:16,145 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:48:16,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 13:48:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:16,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-02 13:48:16,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:48:16,350 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:48:16,351 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 50 [2021-11-02 13:48:16,371 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:48:16,371 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 71 treesize of output 54 [2021-11-02 13:48:20,123 INFO L354 Elim1Store]: treesize reduction 107, result has 28.2 percent of original size [2021-11-02 13:48:20,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 139 [2021-11-02 13:48:20,167 INFO L354 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2021-11-02 13:48:20,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 120 [2021-11-02 13:48:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:48:20,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:48:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:48:20,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855728489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:48:20,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:48:20,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 16] total 41 [2021-11-02 13:48:20,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416734253] [2021-11-02 13:48:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-02 13:48:20,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-02 13:48:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1504, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 13:48:20,932 INFO L87 Difference]: Start difference. First operand 409 states and 442 transitions. Second operand has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:21,944 INFO L93 Difference]: Finished difference Result 493 states and 536 transitions. [2021-11-02 13:48:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 13:48:21,945 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 13:48:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:21,946 INFO L225 Difference]: With dead ends: 493 [2021-11-02 13:48:21,946 INFO L226 Difference]: Without dead ends: 422 [2021-11-02 13:48:21,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1990.55ms TimeCoverageRelationStatistics Valid=225, Invalid=2531, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 13:48:21,947 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 330.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 388.42ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:21,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 1152 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [20 Valid, 714 Invalid, 0 Unknown, 418 Unchecked, 388.42ms Time] [2021-11-02 13:48:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-02 13:48:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 417. [2021-11-02 13:48:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 415 states have (on average 1.0867469879518072) internal successors, (451), 416 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 451 transitions. [2021-11-02 13:48:21,978 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 451 transitions. Word has length 85 [2021-11-02 13:48:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:21,978 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 451 transitions. [2021-11-02 13:48:21,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 451 transitions. [2021-11-02 13:48:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:48:21,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:21,979 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] [2021-11-02 13:48:21,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 13:48:22,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-02 13:48:22,184 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1737263547, now seen corresponding path program 1 times [2021-11-02 13:48:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:22,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220032651] [2021-11-02 13:48:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:22,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:48:22,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:22,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220032651] [2021-11-02 13:48:22,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220032651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:22,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104599192] [2021-11-02 13:48:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:22,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:22,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:48:22,608 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:48:22,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 13:48:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:22,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-02 13:48:22,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:48:22,803 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:48:22,804 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 50 [2021-11-02 13:48:22,823 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:48:22,823 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 71 treesize of output 54 [2021-11-02 13:48:27,789 INFO L354 Elim1Store]: treesize reduction 66, result has 17.5 percent of original size [2021-11-02 13:48:27,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 71 [2021-11-02 13:48:27,821 INFO L354 Elim1Store]: treesize reduction 22, result has 64.5 percent of original size [2021-11-02 13:48:27,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 77 [2021-11-02 13:48:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:48:27,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:48:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:48:28,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104599192] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:48:28,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:48:28,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 12] total 39 [2021-11-02 13:48:28,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545244062] [2021-11-02 13:48:28,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-02 13:48:28,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-02 13:48:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 13:48:28,582 INFO L87 Difference]: Start difference. First operand 417 states and 451 transitions. Second operand has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 39 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:29,558 INFO L93 Difference]: Finished difference Result 552 states and 596 transitions. [2021-11-02 13:48:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 13:48:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 39 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 13:48:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:29,560 INFO L225 Difference]: With dead ends: 552 [2021-11-02 13:48:29,560 INFO L226 Difference]: Without dead ends: 490 [2021-11-02 13:48:29,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 3756.11ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 13:48:29,561 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 423.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.57ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 500.25ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:29,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 1263 Unknown, 0 Unchecked, 2.57ms Time], IncrementalHoareTripleChecker [13 Valid, 981 Invalid, 0 Unknown, 269 Unchecked, 500.25ms Time] [2021-11-02 13:48:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-02 13:48:29,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 414. [2021-11-02 13:48:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.0849514563106797) internal successors, (447), 413 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 447 transitions. [2021-11-02 13:48:29,596 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 447 transitions. Word has length 85 [2021-11-02 13:48:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:29,597 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 447 transitions. [2021-11-02 13:48:29,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 39 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 447 transitions. [2021-11-02 13:48:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:48:29,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:29,598 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] [2021-11-02 13:48:29,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 13:48:29,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 13:48:29,820 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:29,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash -404807490, now seen corresponding path program 2 times [2021-11-02 13:48:29,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:29,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795921898] [2021-11-02 13:48:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:29,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-02 13:48:30,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:30,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795921898] [2021-11-02 13:48:30,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795921898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:48:30,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:48:30,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 13:48:30,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068661636] [2021-11-02 13:48:30,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:48:30,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:48:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:48:30,085 INFO L87 Difference]: Start difference. First operand 414 states and 447 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:30,573 INFO L93 Difference]: Finished difference Result 464 states and 503 transitions. [2021-11-02 13:48:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:48:30,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 85 [2021-11-02 13:48:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:30,575 INFO L225 Difference]: With dead ends: 464 [2021-11-02 13:48:30,575 INFO L226 Difference]: Without dead ends: 411 [2021-11-02 13:48:30,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 217.67ms TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:48:30,575 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 516 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 312.96ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:30,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 0 Invalid, 595 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [62 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 312.96ms Time] [2021-11-02 13:48:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-02 13:48:30,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2021-11-02 13:48:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 409 states have (on average 1.080684596577017) internal successors, (442), 410 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 442 transitions. [2021-11-02 13:48:30,618 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 442 transitions. Word has length 85 [2021-11-02 13:48:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:30,618 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 442 transitions. [2021-11-02 13:48:30,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 442 transitions. [2021-11-02 13:48:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 13:48:30,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:30,620 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] [2021-11-02 13:48:30,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 13:48:30,620 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash -725842291, now seen corresponding path program 2 times [2021-11-02 13:48:30,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:30,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750741503] [2021-11-02 13:48:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:30,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:48:30,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:30,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750741503] [2021-11-02 13:48:30,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750741503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:30,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753629848] [2021-11-02 13:48:30,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 13:48:30,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:48:30,860 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:48:30,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 13:48:31,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 13:48:31,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 13:48:31,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-02 13:48:31,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:48:31,072 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:48:31,072 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 [2021-11-02 13:48:31,082 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-02 13:48:31,082 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 [2021-11-02 13:48:35,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:48:35,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 112 [2021-11-02 13:48:35,071 INFO L354 Elim1Store]: treesize reduction 14, result has 62.2 percent of original size [2021-11-02 13:48:35,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 98 [2021-11-02 13:48:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 13:48:35,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:48:35,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753629848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:48:35,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:48:35,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 26 [2021-11-02 13:48:35,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838336508] [2021-11-02 13:48:35,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:48:35,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:48:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:48:35,119 INFO L87 Difference]: Start difference. First operand 411 states and 442 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:35,311 INFO L93 Difference]: Finished difference Result 489 states and 529 transitions. [2021-11-02 13:48:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:48:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-02 13:48:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:35,313 INFO L225 Difference]: With dead ends: 489 [2021-11-02 13:48:35,313 INFO L226 Difference]: Without dead ends: 406 [2021-11-02 13:48:35,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1872.17ms TimeCoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-11-02 13:48:35,314 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 556 IncrementalHoareTripleChecker+Unchecked, 128.02ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:35,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 785 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 556 Unchecked, 128.02ms Time] [2021-11-02 13:48:35,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-02 13:48:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2021-11-02 13:48:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 403 states have (on average 1.0769230769230769) internal successors, (434), 404 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 434 transitions. [2021-11-02 13:48:35,348 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 434 transitions. Word has length 93 [2021-11-02 13:48:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:35,348 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 434 transitions. [2021-11-02 13:48:35,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 434 transitions. [2021-11-02 13:48:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 13:48:35,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:35,349 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] [2021-11-02 13:48:35,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 13:48:35,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 13:48:35,550 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash -86539151, now seen corresponding path program 1 times [2021-11-02 13:48:35,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:35,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251719823] [2021-11-02 13:48:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:35,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 13:48:36,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:36,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251719823] [2021-11-02 13:48:36,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251719823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:36,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112934490] [2021-11-02 13:48:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:36,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:48:36,108 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:48:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 13:48:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:36,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-02 13:48:36,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:48:36,333 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:48:36,333 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 50 [2021-11-02 13:48:36,349 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:48:36,349 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 71 treesize of output 54 [2021-11-02 13:48:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 13:48:50,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:48:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 13:48:51,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112934490] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:51,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-02 13:48:51,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [22, 27] total 59 [2021-11-02 13:48:51,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403647385] [2021-11-02 13:48:51,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 13:48:51,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:51,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 13:48:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3244, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 13:48:51,650 INFO L87 Difference]: Start difference. First operand 405 states and 434 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:53,321 INFO L93 Difference]: Finished difference Result 540 states and 579 transitions. [2021-11-02 13:48:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 13:48:53,322 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-02 13:48:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:53,323 INFO L225 Difference]: With dead ends: 540 [2021-11-02 13:48:53,323 INFO L226 Difference]: Without dead ends: 489 [2021-11-02 13:48:53,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 13818.24ms TimeCoverageRelationStatistics Valid=496, Invalid=5204, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 13:48:53,325 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 934 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 564.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 662.23ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:53,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 0 Invalid, 1305 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [56 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 662.23ms Time] [2021-11-02 13:48:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-02 13:48:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 408. [2021-11-02 13:48:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 406 states have (on average 1.0763546798029557) internal successors, (437), 407 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 437 transitions. [2021-11-02 13:48:53,356 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 437 transitions. Word has length 95 [2021-11-02 13:48:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:53,356 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 437 transitions. [2021-11-02 13:48:53,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 437 transitions. [2021-11-02 13:48:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:48:53,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:53,357 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] [2021-11-02 13:48:53,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-02 13:48:53,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:53,558 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash 353638822, now seen corresponding path program 1 times [2021-11-02 13:48:53,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:53,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853115421] [2021-11-02 13:48:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:53,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:48:53,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:53,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853115421] [2021-11-02 13:48:53,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853115421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:53,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828712952] [2021-11-02 13:48:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:53,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:48:53,972 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:48:53,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 13:48:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:54,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-02 13:48:54,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:48:54,170 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-02 13:48:54,170 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 [2021-11-02 13:48:54,180 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-02 13:48:54,180 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 [2021-11-02 13:48:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:48:58,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:48:58,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828712952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:48:58,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:48:58,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2021-11-02 13:48:58,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076208565] [2021-11-02 13:48:58,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:48:58,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:48:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:48:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:48:58,111 INFO L87 Difference]: Start difference. First operand 408 states and 437 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:48:58,207 INFO L93 Difference]: Finished difference Result 440 states and 472 transitions. [2021-11-02 13:48:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:48:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-02 13:48:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:48:58,209 INFO L225 Difference]: With dead ends: 440 [2021-11-02 13:48:58,209 INFO L226 Difference]: Without dead ends: 436 [2021-11-02 13:48:58,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1666.28ms TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:48:58,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 46.38ms IncrementalHoareTripleChecker+Time [2021-11-02 13:48:58,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 312 Unknown, 0 Unchecked, 0.26ms Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 221 Unchecked, 46.38ms Time] [2021-11-02 13:48:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-02 13:48:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2021-11-02 13:48:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 434 states have (on average 1.076036866359447) internal successors, (467), 435 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 467 transitions. [2021-11-02 13:48:58,244 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 467 transitions. Word has length 96 [2021-11-02 13:48:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:48:58,244 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 467 transitions. [2021-11-02 13:48:58,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:48:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 467 transitions. [2021-11-02 13:48:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:48:58,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:48:58,245 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] [2021-11-02 13:48:58,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 13:48:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:58,459 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:48:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:48:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1484415700, now seen corresponding path program 1 times [2021-11-02 13:48:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:48:58,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600298496] [2021-11-02 13:48:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:58,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:48:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 13:48:58,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:48:58,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600298496] [2021-11-02 13:48:58,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600298496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:48:58,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869359236] [2021-11-02 13:48:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:48:58,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:48:58,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:48:58,624 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:48:58,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 13:48:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:48:58,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-02 13:48:58,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:48:58,800 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-02 13:48:58,800 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 50 [2021-11-02 13:48:58,816 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-02 13:48:58,816 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 71 treesize of output 54 [2021-11-02 13:49:04,052 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-02 13:49:04,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-02 13:49:04,067 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:49:04,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 95 [2021-11-02 13:49:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:49:04,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:49:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869359236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:49:04,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:49:04,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2021-11-02 13:49:04,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005184880] [2021-11-02 13:49:04,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:49:04,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:49:04,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:49:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:49:04,151 INFO L87 Difference]: Start difference. First operand 436 states and 467 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:49:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:49:04,294 INFO L93 Difference]: Finished difference Result 445 states and 475 transitions. [2021-11-02 13:49:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:49:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-02 13:49:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:49:04,296 INFO L225 Difference]: With dead ends: 445 [2021-11-02 13:49:04,296 INFO L226 Difference]: Without dead ends: 436 [2021-11-02 13:49:04,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2927.20ms TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:49:04,297 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 77.61ms IncrementalHoareTripleChecker+Time [2021-11-02 13:49:04,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 263 Unchecked, 77.61ms Time] [2021-11-02 13:49:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-02 13:49:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2021-11-02 13:49:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 434 states have (on average 1.0714285714285714) internal successors, (465), 435 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:49:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 465 transitions. [2021-11-02 13:49:04,342 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 465 transitions. Word has length 96 [2021-11-02 13:49:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:49:04,343 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 465 transitions. [2021-11-02 13:49:04,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:49:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 465 transitions. [2021-11-02 13:49:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 13:49:04,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:49:04,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 13:49:04,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 13:49:04,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-02 13:49:04,545 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:49:04,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:49:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 125531425, now seen corresponding path program 2 times [2021-11-02 13:49:04,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:49:04,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968190881] [2021-11-02 13:49:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:49:04,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:49:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:49:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 13:49:04,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:49:04,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968190881] [2021-11-02 13:49:04,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968190881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:49:04,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272203371] [2021-11-02 13:49:04,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 13:49:04,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:49:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:49:04,888 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:49:04,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 13:49:05,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 13:49:05,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 13:49:05,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-02 13:49:05,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:49:05,158 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 14 treesize of output 15 [2021-11-02 13:49:05,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-11-02 13:49:05,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-02 13:49:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:49:06,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:49:06,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:49:06,398 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-02 13:49:06,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 41 [2021-11-02 13:49:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 13:49:06,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:49:07,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:49:07,500 INFO L354 Elim1Store]: treesize reduction 45, result has 85.0 percent of original size [2021-11-02 13:49:07,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 3772 treesize of output 3289 [2021-11-02 13:49:07,577 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 5555 treesize of output 5403 [2021-11-02 13:49:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 13:49:13,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272203371] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:49:13,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:49:13,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 37 [2021-11-02 13:49:13,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406706603] [2021-11-02 13:49:13,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 13:49:13,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:49:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 13:49:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 13:49:13,440 INFO L87 Difference]: Start difference. First operand 436 states and 465 transitions. Second operand has 37 states, 37 states have (on average 6.0) internal successors, (222), 37 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:49:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:49:15,731 INFO L93 Difference]: Finished difference Result 533 states and 564 transitions. [2021-11-02 13:49:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 13:49:15,731 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.0) internal successors, (222), 37 states have internal predecessors, (222), 0 states have call successors, (0), 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 101 [2021-11-02 13:49:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:49:15,732 INFO L225 Difference]: With dead ends: 533 [2021-11-02 13:49:15,732 INFO L226 Difference]: Without dead ends: 327 [2021-11-02 13:49:15,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1795.68ms TimeCoverageRelationStatistics Valid=364, Invalid=2086, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 13:49:15,734 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1134 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1083.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.57ms SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1269.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:49:15,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 0 Invalid, 2744 Unknown, 0 Unchecked, 6.57ms Time], IncrementalHoareTripleChecker [138 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 1269.15ms Time] [2021-11-02 13:49:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-02 13:49:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2021-11-02 13:49:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 317 states have (on average 1.0567823343848581) internal successors, (335), 318 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:49:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 335 transitions. [2021-11-02 13:49:15,762 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 335 transitions. Word has length 101 [2021-11-02 13:49:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:49:15,762 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 335 transitions. [2021-11-02 13:49:15,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.0) internal successors, (222), 37 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:49:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 335 transitions. [2021-11-02 13:49:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 13:49:15,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:49:15,763 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 13:49:15,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 13:49:15,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-02 13:49:15,964 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 13:49:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:49:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash -446690621, now seen corresponding path program 1 times [2021-11-02 13:49:15,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:49:15,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262126702] [2021-11-02 13:49:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:49:15,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:49:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:49:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:49:16,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:49:16,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262126702] [2021-11-02 13:49:16,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262126702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:49:16,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642221425] [2021-11-02 13:49:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:49:16,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:49:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:49:16,657 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:49:16,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 13:49:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:49:16,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-02 13:49:16,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:49:16,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:49:16,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-02 13:49:16,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:49:16,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:49:16,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-02 13:49:17,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:49:17,046 INFO L354 Elim1Store]: treesize reduction 192, result has 14.3 percent of original size [2021-11-02 13:49:17,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 169 treesize of output 117 [2021-11-02 13:49:17,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 13:49:17,074 INFO L354 Elim1Store]: treesize reduction 186, result has 16.2 percent of original size [2021-11-02 13:49:17,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 111 [2021-11-02 13:49:20,803 INFO L354 Elim1Store]: treesize reduction 228, result has 3.0 percent of original size [2021-11-02 13:49:20,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 260 treesize of output 142 [2021-11-02 13:49:20,826 INFO L354 Elim1Store]: treesize reduction 142, result has 4.7 percent of original size [2021-11-02 13:49:20,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 97 treesize of output 53 [2021-11-02 13:49:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 13:49:20,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:49:29,533 WARN L210 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 663 DAG size of output: 323 [2021-11-02 13:49:29,534 INFO L354 Elim1Store]: treesize reduction 23607, result has 25.0 percent of original size [2021-11-02 13:49:29,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 21 new quantified variables, introduced 108 case distinctions, treesize of input 869135901 treesize of output 817125888 Killed by 15