./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 11:46:25,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 11:46:25,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 11:46:25,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 11:46:25,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 11:46:25,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 11:46:25,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 11:46:25,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 11:46:25,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 11:46:25,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 11:46:25,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 11:46:25,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 11:46:25,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 11:46:25,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 11:46:25,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 11:46:25,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 11:46:25,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 11:46:25,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 11:46:25,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 11:46:25,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 11:46:25,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 11:46:25,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 11:46:25,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 11:46:25,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 11:46:25,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 11:46:25,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 11:46:25,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 11:46:25,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 11:46:25,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 11:46:25,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 11:46:25,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 11:46:25,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 11:46:25,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 11:46:25,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 11:46:25,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 11:46:25,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 11:46:25,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 11:46:25,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 11:46:25,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 11:46:25,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 11:46:25,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 11:46:25,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 11:46:25,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 11:46:25,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 11:46:25,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 11:46:25,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 11:46:25,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 11:46:25,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 11:46:25,725 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 11:46:25,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 11:46:25,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 11:46:25,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 11:46:25,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 11:46:25,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 11:46:25,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 11:46:25,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 11:46:25,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 11:46:25,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 11:46:25,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 11:46:25,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 11:46:25,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 11:46:25,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:25,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 11:46:25,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 11:46:25,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 11:46:25,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 11:46:25,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 11:46:25,728 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 11:46:25,731 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 11:46:25,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 11:46:25,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 11:46:25,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-11-05 11:46:26,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 11:46:26,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 11:46:26,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 11:46:26,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 11:46:26,024 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 11:46:26,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-05 11:46:26,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b122dcce/efbbc2ebc791477bacf2af973e207137/FLAGec43ac42e [2021-11-05 11:46:26,633 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 11:46:26,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-05 11:46:26,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b122dcce/efbbc2ebc791477bacf2af973e207137/FLAGec43ac42e [2021-11-05 11:46:27,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b122dcce/efbbc2ebc791477bacf2af973e207137 [2021-11-05 11:46:27,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 11:46:27,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 11:46:27,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:27,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 11:46:27,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 11:46:27,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:27" (1/1) ... [2021-11-05 11:46:27,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c435113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:27, skipping insertion in model container [2021-11-05 11:46:27,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:27" (1/1) ... [2021-11-05 11:46:27,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 11:46:27,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 11:46:27,343 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_array_list_clean_up_harness.i[4497,4510] [2021-11-05 11:46:27,348 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_array_list_clean_up_harness.i[4557,4570] [2021-11-05 11:46:27,362 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:27,366 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:27,834 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:27,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,261 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 11:46:28,269 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-05 11:46:28,270 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_array_list_clean_up_harness.i[4557,4570] [2021-11-05 11:46:28,271 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:28,271 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:28,304 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:28,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,318 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,382 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,605 INFO L208 MainTranslator]: Completed translation [2021-11-05 11:46:28,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28 WrapperNode [2021-11-05 11:46:28,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:28,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 11:46:28,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 11:46:28,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 11:46:28,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 11:46:28,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 11:46:28,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 11:46:28,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 11:46:28,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 11:46:28,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 11:46:28,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:28,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:28,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 11:46:28,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 11:46:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 11:46:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 11:46:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 11:46:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 11:46:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 11:46:28,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 11:46:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 11:46:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 11:46:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 11:46:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 11:46:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 11:46:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 11:46:35,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 11:46:35,526 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-05 11:46:35,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:35 BoogieIcfgContainer [2021-11-05 11:46:35,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 11:46:35,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 11:46:35,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 11:46:35,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 11:46:35,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 11:46:27" (1/3) ... [2021-11-05 11:46:35,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a155601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:35, skipping insertion in model container [2021-11-05 11:46:35,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (2/3) ... [2021-11-05 11:46:35,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a155601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:35, skipping insertion in model container [2021-11-05 11:46:35,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:35" (3/3) ... [2021-11-05 11:46:35,533 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-11-05 11:46:35,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 11:46:35,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 11:46:35,565 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 11:46:35,572 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 11:46:35,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 11:46:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 11:46:35,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:35,598 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] [2021-11-05 11:46:35,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash -68563336, now seen corresponding path program 1 times [2021-11-05 11:46:35,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:35,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995664713] [2021-11-05 11:46:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:35,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:36,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:36,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995664713] [2021-11-05 11:46:36,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995664713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:36,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:36,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 11:46:36,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453850809] [2021-11-05 11:46:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:36,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 11:46:36,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 11:46:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:36,147 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:36,170 INFO L93 Difference]: Finished difference Result 162 states and 227 transitions. [2021-11-05 11:46:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 11:46:36,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-05 11:46:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:36,177 INFO L225 Difference]: With dead ends: 162 [2021-11-05 11:46:36,178 INFO L226 Difference]: Without dead ends: 78 [2021-11-05 11:46:36,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:36,184 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:36,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 11:46:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-05 11:46:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-05 11:46:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-11-05 11:46:36,217 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 31 [2021-11-05 11:46:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-11-05 11:46:36,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-11-05 11:46:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 11:46:36,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:36,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 11:46:36,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 814292389, now seen corresponding path program 1 times [2021-11-05 11:46:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:36,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126422940] [2021-11-05 11:46:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:36,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:36,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126422940] [2021-11-05 11:46:36,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126422940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:36,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:36,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 11:46:36,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534259985] [2021-11-05 11:46:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:36,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 11:46:36,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 11:46:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:36,448 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:36,480 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2021-11-05 11:46:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 11:46:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-05 11:46:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:36,482 INFO L225 Difference]: With dead ends: 143 [2021-11-05 11:46:36,482 INFO L226 Difference]: Without dead ends: 79 [2021-11-05 11:46:36,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:36,483 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.86ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:36,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 5 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 22.86ms Time] [2021-11-05 11:46:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-05 11:46:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-05 11:46:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2021-11-05 11:46:36,492 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 34 [2021-11-05 11:46:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:36,492 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2021-11-05 11:46:36,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2021-11-05 11:46:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 11:46:36,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:36,494 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] [2021-11-05 11:46:36,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 11:46:36,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -571911005, now seen corresponding path program 1 times [2021-11-05 11:46:36,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:36,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175514957] [2021-11-05 11:46:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:36,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:36,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175514957] [2021-11-05 11:46:36,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175514957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:36,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:36,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 11:46:36,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824694771] [2021-11-05 11:46:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:36,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 11:46:36,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 11:46:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:36,743 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:36,870 INFO L93 Difference]: Finished difference Result 150 states and 189 transitions. [2021-11-05 11:46:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 11:46:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-05 11:46:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:36,871 INFO L225 Difference]: With dead ends: 150 [2021-11-05 11:46:36,871 INFO L226 Difference]: Without dead ends: 103 [2021-11-05 11:46:36,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.74ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:36,872 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 117 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.61ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:36,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 147 Invalid, 21 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 111.61ms Time] [2021-11-05 11:46:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-05 11:46:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2021-11-05 11:46:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 78 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2021-11-05 11:46:36,877 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 34 [2021-11-05 11:46:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:36,877 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2021-11-05 11:46:36,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2021-11-05 11:46:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 11:46:36,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:36,878 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] [2021-11-05 11:46:36,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 11:46:36,878 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 77568063, now seen corresponding path program 1 times [2021-11-05 11:46:36,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:36,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052729391] [2021-11-05 11:46:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:36,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329092849] [2021-11-05 11:46:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:36,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:36,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:46:36,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 11:46:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:37,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-05 11:46:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:37,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:37,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052729391] [2021-11-05 11:46:37,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329092849] [2021-11-05 11:46:37,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329092849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:37,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:37,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 11:46:37,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771428642] [2021-11-05 11:46:37,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:37,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 11:46:37,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 11:46:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:37,867 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:38,018 INFO L93 Difference]: Finished difference Result 140 states and 175 transitions. [2021-11-05 11:46:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 11:46:38,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-05 11:46:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:38,020 INFO L225 Difference]: With dead ends: 140 [2021-11-05 11:46:38,020 INFO L226 Difference]: Without dead ends: 99 [2021-11-05 11:46:38,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 100.23ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-05 11:46:38,021 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 27 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.06ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:38,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 366 Invalid, 25 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 91.06ms Time] [2021-11-05 11:46:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-05 11:46:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 80. [2021-11-05 11:46:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2021-11-05 11:46:38,026 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 42 [2021-11-05 11:46:38,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:38,026 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2021-11-05 11:46:38,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2021-11-05 11:46:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 11:46:38,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:38,027 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] [2021-11-05 11:46:38,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:38,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:38,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash 79176777, now seen corresponding path program 1 times [2021-11-05 11:46:38,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:38,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706794710] [2021-11-05 11:46:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:38,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:38,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:38,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020449608] [2021-11-05 11:46:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:38,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:38,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:46:38,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 11:46:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:38,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-05 11:46:38,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:39,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:39,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:39,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706794710] [2021-11-05 11:46:39,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:39,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020449608] [2021-11-05 11:46:39,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020449608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:39,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:39,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 11:46:39,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130199539] [2021-11-05 11:46:39,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:39,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 11:46:39,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 11:46:39,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:39,128 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:39,143 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2021-11-05 11:46:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 11:46:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-05 11:46:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:39,144 INFO L225 Difference]: With dead ends: 91 [2021-11-05 11:46:39,144 INFO L226 Difference]: Without dead ends: 81 [2021-11-05 11:46:39,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:39,145 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.17ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:39,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.17ms Time] [2021-11-05 11:46:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-05 11:46:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-05 11:46:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2021-11-05 11:46:39,149 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 42 [2021-11-05 11:46:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:39,150 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2021-11-05 11:46:39,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2021-11-05 11:46:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 11:46:39,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:39,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:39,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:39,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:39,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:39,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -883480762, now seen corresponding path program 1 times [2021-11-05 11:46:39,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:39,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465701198] [2021-11-05 11:46:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:39,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:39,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:39,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105281383] [2021-11-05 11:46:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:39,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:39,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:46:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 11:46:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:40,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 11:46:40,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 11:46:40,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:40,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:40,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465701198] [2021-11-05 11:46:40,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:40,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105281383] [2021-11-05 11:46:40,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105281383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:40,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:40,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 11:46:40,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462053379] [2021-11-05 11:46:40,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:40,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 11:46:40,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 11:46:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:40,196 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:40,241 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2021-11-05 11:46:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 11:46:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 11:46:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:40,242 INFO L225 Difference]: With dead ends: 151 [2021-11-05 11:46:40,242 INFO L226 Difference]: Without dead ends: 124 [2021-11-05 11:46:40,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:40,244 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 50 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.35ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:40,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 181 Invalid, 11 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 39.35ms Time] [2021-11-05 11:46:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-05 11:46:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 82. [2021-11-05 11:46:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2021-11-05 11:46:40,254 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 43 [2021-11-05 11:46:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:40,254 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2021-11-05 11:46:40,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2021-11-05 11:46:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 11:46:40,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:40,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:40,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:40,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:40,462 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 759678460, now seen corresponding path program 1 times [2021-11-05 11:46:40,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:40,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348051918] [2021-11-05 11:46:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:40,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:40,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:40,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607253464] [2021-11-05 11:46:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:40,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:40,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:40,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:46:40,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 11:46:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:41,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-05 11:46:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 11:46:41,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:41,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:41,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348051918] [2021-11-05 11:46:41,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:41,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607253464] [2021-11-05 11:46:41,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607253464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:41,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:41,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:41,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411600972] [2021-11-05 11:46:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:41,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:41,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:41,417 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:41,696 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2021-11-05 11:46:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 11:46:41,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 11:46:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:41,697 INFO L225 Difference]: With dead ends: 123 [2021-11-05 11:46:41,697 INFO L226 Difference]: Without dead ends: 99 [2021-11-05 11:46:41,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 244.86ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-05 11:46:41,699 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 148 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.00ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:41,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 324 Invalid, 46 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 114.00ms Time] [2021-11-05 11:46:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-05 11:46:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 82. [2021-11-05 11:46:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-05 11:46:41,705 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 43 [2021-11-05 11:46:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:41,705 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-05 11:46:41,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-05 11:46:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 11:46:41,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:41,706 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] [2021-11-05 11:46:41,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:41,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:41,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -897320858, now seen corresponding path program 1 times [2021-11-05 11:46:41,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:41,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646609856] [2021-11-05 11:46:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:41,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:41,972 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:41,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717440546] [2021-11-05 11:46:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:41,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:41,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:46:41,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 11:46:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:42,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 11:46:42,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 11:46:42,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:42,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:42,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646609856] [2021-11-05 11:46:42,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:42,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717440546] [2021-11-05 11:46:42,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717440546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:42,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:42,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 11:46:42,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167215235] [2021-11-05 11:46:42,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:42,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:42,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:42,882 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 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) [2021-11-05 11:46:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:43,115 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2021-11-05 11:46:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 11:46:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 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 [2021-11-05 11:46:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:43,116 INFO L225 Difference]: With dead ends: 107 [2021-11-05 11:46:43,116 INFO L226 Difference]: Without dead ends: 82 [2021-11-05 11:46:43,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 159.65ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 11:46:43,117 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 288 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.72ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:43,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 120 Invalid, 40 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 129.72ms Time] [2021-11-05 11:46:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-05 11:46:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-05 11:46:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 81 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:46:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 99 transitions. [2021-11-05 11:46:43,120 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 99 transitions. Word has length 45 [2021-11-05 11:46:43,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:43,121 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 99 transitions. [2021-11-05 11:46:43,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 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) [2021-11-05 11:46:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 99 transitions. [2021-11-05 11:46:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 11:46:43,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:43,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:46:43,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:43,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:43,322 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:46:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2085236277, now seen corresponding path program 1 times [2021-11-05 11:46:43,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:43,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190055531] [2021-11-05 11:46:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:43,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:43,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:43,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194672091] [2021-11-05 11:46:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:43,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:43,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:46:43,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 11:51:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:51:47,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-05 11:51:47,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:51:48,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-05 11:51:48,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-05 11:51:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:51:48,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 11:51:49,789 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-05 11:51:49,789 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 98 [2021-11-05 11:51:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:51:50,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:51:50,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190055531] [2021-11-05 11:51:50,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:51:50,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194672091] [2021-11-05 11:51:50,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194672091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 11:51:50,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 11:51:50,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-11-05 11:51:50,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172263443] [2021-11-05 11:51:50,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 11:51:50,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-05 11:51:50,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:51:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-05 11:51:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-11-05 11:51:50,410 INFO L87 Difference]: Start difference. First operand 82 states and 99 transitions. Second operand has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:51:52,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:51:54,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:51:56,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:51:58,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:00,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:03,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:05,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 11:52:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:52:12,349 INFO L93 Difference]: Finished difference Result 233 states and 277 transitions. [2021-11-05 11:52:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 11:52:12,350 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-05 11:52:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:52:12,351 INFO L225 Difference]: With dead ends: 233 [2021-11-05 11:52:12,351 INFO L226 Difference]: Without dead ends: 229 [2021-11-05 11:52:12,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 5508.40ms TimeCoverageRelationStatistics Valid=587, Invalid=1863, Unknown=0, NotChecked=0, Total=2450 [2021-11-05 11:52:12,352 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 515 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 125 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16447.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.66ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17593.60ms IncrementalHoareTripleChecker+Time [2021-11-05 11:52:12,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1158 Invalid, 866 Unknown, 0 Unchecked, 17.66ms Time], IncrementalHoareTripleChecker [125 Valid, 734 Invalid, 7 Unknown, 0 Unchecked, 17593.60ms Time] [2021-11-05 11:52:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-05 11:52:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 119. [2021-11-05 11:52:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.2372881355932204) internal successors, (146), 118 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:52:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-11-05 11:52:12,361 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 46 [2021-11-05 11:52:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:52:12,361 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-11-05 11:52:12,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:52:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-11-05 11:52:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 11:52:12,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:52:12,362 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 11:52:12,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 11:52:12,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:52:12,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:52:12,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:52:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1278229803, now seen corresponding path program 2 times [2021-11-05 11:52:12,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:52:12,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372211101] [2021-11-05 11:52:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:52:12,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:52:12,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:52:12,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70667265] [2021-11-05 11:52:12,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 11:52:12,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:52:12,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:52:12,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:52:12,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 11:56:36,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 11:56:36,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 11:56:36,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2412 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-05 11:56:36,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:56:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 11:56:36,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 11:56:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 11:56:36,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:56:36,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372211101] [2021-11-05 11:56:36,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:56:36,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70667265] [2021-11-05 11:56:36,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70667265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 11:56:36,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 11:56:36,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2021-11-05 11:56:36,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106115385] [2021-11-05 11:56:36,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 11:56:36,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 11:56:36,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:56:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 11:56:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 11:56:36,972 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:56:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:56:37,361 INFO L93 Difference]: Finished difference Result 355 states and 439 transitions. [2021-11-05 11:56:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 11:56:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 48 [2021-11-05 11:56:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:56:37,364 INFO L225 Difference]: With dead ends: 355 [2021-11-05 11:56:37,364 INFO L226 Difference]: Without dead ends: 321 [2021-11-05 11:56:37,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 308.21ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-05 11:56:37,365 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 269 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.33ms IncrementalHoareTripleChecker+Time [2021-11-05 11:56:37,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 750 Invalid, 70 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 182.33ms Time] [2021-11-05 11:56:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-05 11:56:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 127. [2021-11-05 11:56:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 126 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:56:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2021-11-05 11:56:37,373 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 48 [2021-11-05 11:56:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:56:37,373 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2021-11-05 11:56:37,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 11:56:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2021-11-05 11:56:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 11:56:37,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:56:37,374 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] [2021-11-05 11:56:37,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-05 11:56:37,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:56:37,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 11:56:37,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:56:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash -934340507, now seen corresponding path program 1 times [2021-11-05 11:56:37,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:56:37,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331993696] [2021-11-05 11:56:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:56:37,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:56:37,649 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:56:37,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774524101] [2021-11-05 11:56:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:56:37,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:56:37,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:56:37,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 11:56:37,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15