./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_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_init_static_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 0ba06c24e4863868ad00a49056930e4c556765c875f4e2eef69c939c987b26bc --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:00:49,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:00:49,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:00:49,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:00:49,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:00:49,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:00:49,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:00:49,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:00:49,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:00:49,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:00:49,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:00:49,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:00:49,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:00:49,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:00:49,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:00:49,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:00:49,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:00:49,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:00:49,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:00:49,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:00:49,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:00:49,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:00:49,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:00:49,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:00:49,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:00:49,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:00:49,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:00:49,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:00:49,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:00:49,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:00:49,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:00:49,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:00:49,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:00:49,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:00:49,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:00:49,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:00:49,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:00:49,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:00:49,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:00:49,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:00:49,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:00:49,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:00:49,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:00:49,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:00:49,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:00:49,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:00:49,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:00:49,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:00:49,997 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:00:49,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:00:49,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:00:49,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:00:49,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:00:49,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:00:49,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:00:49,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:00:49,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:00:49,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:00:50,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:00:50,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:00:50,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:00:50,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:00:50,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:00:50,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:00:50,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:00:50,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:00:50,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:00:50,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:00:50,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:00:50,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:00:50,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:00:50,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba06c24e4863868ad00a49056930e4c556765c875f4e2eef69c939c987b26bc [2021-11-05 12:00:50,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:00:50,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:00:50,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:00:50,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:00:50,302 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:00:50,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i [2021-11-05 12:00:50,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93048cde7/348abaa7440a44a48b6845cbaaeae73b/FLAGa0c04f62c [2021-11-05 12:00:50,917 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:00:50,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i [2021-11-05 12:00:50,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93048cde7/348abaa7440a44a48b6845cbaaeae73b/FLAGa0c04f62c [2021-11-05 12:00:51,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93048cde7/348abaa7440a44a48b6845cbaaeae73b [2021-11-05 12:00:51,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:00:51,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:00:51,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:00:51,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:00:51,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:00:51,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:00:51" (1/1) ... [2021-11-05 12:00:51,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a1c58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:51, skipping insertion in model container [2021-11-05 12:00:51,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:00:51" (1/1) ... [2021-11-05 12:00:51,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:00:51,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:00:51,651 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_init_static_harness.i[4500,4513] [2021-11-05 12:00:51,656 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_init_static_harness.i[4560,4573] [2021-11-05 12:00:51,666 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:00:51,675 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:00:52,102 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:00:52,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:00:52,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:00:52,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:00:52,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:00:52,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:00:52,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:00:52,401 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:00:52,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:00:52,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:00:52,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:00:52,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:00:52,552 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:00:52,568 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_init_static_harness.i[4500,4513] [2021-11-05 12:00:52,570 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_init_static_harness.i[4560,4573] [2021-11-05 12:00:52,573 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:00:52,573 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:00:52,606 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:00:52,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:00:52,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:00:52,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:00:52,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:00:52,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:00:52,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:00:52,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:00:52,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:00:52,648 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:00:52,648 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:00:52,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:52,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:00:52,868 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:00:52,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52 WrapperNode [2021-11-05 12:00:52,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:00:52,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:00:52,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:00:52,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:00:52,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:52,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:52,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:00:53,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:00:53,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:00:53,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:00:53,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:00:53,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:00:53,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:00:53,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:00:53,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (1/1) ... [2021-11-05 12:00:53,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:00:53,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:00:53,077 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 12:00:53,104 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 12:00:53,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:00:53,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 12:00:53,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:00:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:00:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:00:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:00:53,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:00:53,821 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-11-05 12:00:53,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:00:53 BoogieIcfgContainer [2021-11-05 12:00:53,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:00:53,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:00:53,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:00:53,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:00:53,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:00:51" (1/3) ... [2021-11-05 12:00:53,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d75cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:00:53, skipping insertion in model container [2021-11-05 12:00:53,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:52" (2/3) ... [2021-11-05 12:00:53,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d75cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:00:53, skipping insertion in model container [2021-11-05 12:00:53,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:00:53" (3/3) ... [2021-11-05 12:00:53,830 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_static_harness.i [2021-11-05 12:00:53,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:00:53,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-05 12:00:53,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:00:53,887 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 12:00:53,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-05 12:00:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 112 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:53,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 12:00:53,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:00:53,912 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] [2021-11-05 12:00:53,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:00:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:00:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -88048581, now seen corresponding path program 1 times [2021-11-05 12:00:53,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:00:53,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924818581] [2021-11-05 12:00:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:53,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:00:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:00:54,135 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 12:00:54,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:00:54,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924818581] [2021-11-05 12:00:54,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924818581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:00:54,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:00:54,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:00:54,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336254445] [2021-11-05 12:00:54,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:00:54,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:00:54,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:00:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:00:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:00:54,163 INFO L87 Difference]: Start difference. First operand has 113 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 112 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:00:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:00:54,189 INFO L93 Difference]: Finished difference Result 223 states and 290 transitions. [2021-11-05 12:00:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:00:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-05 12:00:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:00:54,197 INFO L225 Difference]: With dead ends: 223 [2021-11-05 12:00:54,198 INFO L226 Difference]: Without dead ends: 107 [2021-11-05 12:00:54,201 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 12:00:54,205 INFO L933 BasicCegarLoop]: 127 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, 127 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:00:54,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:00:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-05 12:00:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-05 12:00:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 12:00:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-11-05 12:00:54,250 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 35 [2021-11-05 12:00:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:00:54,251 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-11-05 12:00:54,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:00:54,255 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-11-05 12:00:54,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 12:00:54,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:00:54,258 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] [2021-11-05 12:00:54,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:00:54,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:00:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:00:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash -539664263, now seen corresponding path program 1 times [2021-11-05 12:00:54,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:00:54,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892843433] [2021-11-05 12:00:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:54,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:00:54,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:00:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616701176] [2021-11-05 12:00:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:54,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:00:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:00:54,320 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 12:00:54,355 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 12:00:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:00:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:00:54,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:00:54,698 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 12:00:54,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:00:54,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:00:54,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892843433] [2021-11-05 12:00:54,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:00:54,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616701176] [2021-11-05 12:00:54,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616701176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:00:54,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:00:54,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:00:54,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442382698] [2021-11-05 12:00:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:00:54,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:00:54,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:00:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:00:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:00:54,705 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:00:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:00:54,800 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2021-11-05 12:00:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:00:54,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-05 12:00:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:00:54,803 INFO L225 Difference]: With dead ends: 163 [2021-11-05 12:00:54,803 INFO L226 Difference]: Without dead ends: 107 [2021-11-05 12:00:54,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.30ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:00:54,805 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 373 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.41ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.01ms IncrementalHoareTripleChecker+Time [2021-11-05 12:00:54,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 147 Invalid, 40 Unknown, 0 Unchecked, 7.41ms Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 44.01ms Time] [2021-11-05 12:00:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-05 12:00:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-05 12:00:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2021-11-05 12:00:54,818 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 35 [2021-11-05 12:00:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:00:54,818 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2021-11-05 12:00:54,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:00:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2021-11-05 12:00:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 12:00:54,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:00:54,821 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 12:00:54,842 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 12:00:55,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:00:55,028 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:00:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:00:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1257903267, now seen corresponding path program 1 times [2021-11-05 12:00:55,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:00:55,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070123152] [2021-11-05 12:00:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:55,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:00:55,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:00:55,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951905674] [2021-11-05 12:00:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:55,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:00:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:00:55,063 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 12:00:55,067 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 12:00:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:00:55,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-05 12:00:55,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:00:55,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-05 12:00:55,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-05 12:00:55,610 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 12:00:55,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:00:55,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:00:55,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070123152] [2021-11-05 12:00:55,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:00:55,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951905674] [2021-11-05 12:00:55,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951905674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:00:55,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:00:55,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:00:55,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008437635] [2021-11-05 12:00:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:00:55,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:00:55,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:00:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:00:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:00:55,614 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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 12:00:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:00:55,853 INFO L93 Difference]: Finished difference Result 169 states and 186 transitions. [2021-11-05 12:00:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:00:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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 12:00:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:00:55,855 INFO L225 Difference]: With dead ends: 169 [2021-11-05 12:00:55,855 INFO L226 Difference]: Without dead ends: 112 [2021-11-05 12:00:55,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 154.73ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:00:55,856 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 442 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.04ms IncrementalHoareTripleChecker+Time [2021-11-05 12:00:55,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 394 Invalid, 117 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [20 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 109.04ms Time] [2021-11-05 12:00:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-05 12:00:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2021-11-05 12:00:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.19) internal successors, (119), 108 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:00:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-11-05 12:00:55,863 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 43 [2021-11-05 12:00:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:00:55,863 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-11-05 12:00:55,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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 12:00:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-11-05 12:00:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 12:00:55,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:00:55,864 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 12:00:55,883 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 12:00:56,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-05 12:00:56,076 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:00:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:00:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -359838749, now seen corresponding path program 1 times [2021-11-05 12:00:56,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:00:56,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504233594] [2021-11-05 12:00:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:56,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:00:56,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:00:56,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153142317] [2021-11-05 12:00:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:00:56,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:00:56,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:00:56,114 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 12:00:56,115 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 12:00:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:00:56,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-05 12:00:56,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:00:56,425 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-05 12:00:56,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-05 12:00:56,671 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-05 12:00:56,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 29 [2021-11-05 12:00:57,000 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-05 12:00:57,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-05 12:00:57,216 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-05 12:00:57,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 48 treesize of output 73 [2021-11-05 12:00:57,981 INFO L354 Elim1Store]: treesize reduction 136, result has 13.4 percent of original size [2021-11-05 12:00:57,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 48 treesize of output 57 [2021-11-05 12:00:58,486 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-05 12:00:58,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 46 [2021-11-05 12:00:58,680 INFO L354 Elim1Store]: treesize reduction 88, result has 27.3 percent of original size [2021-11-05 12:00:58,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 47 treesize of output 67 [2021-11-05 12:00:58,840 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-05 12:00:58,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 57 [2021-11-05 12:00:59,305 INFO L354 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2021-11-05 12:00:59,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 56 [2021-11-05 12:00:59,394 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 12:00:59,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:00:59,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:00:59,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504233594] [2021-11-05 12:00:59,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:00:59,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153142317] [2021-11-05 12:00:59,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153142317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:00:59,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:00:59,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-05 12:00:59,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002448430] [2021-11-05 12:00:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:00:59,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 12:00:59,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:00:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 12:00:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:00:59,396 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 25 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 12:01:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:00,612 INFO L93 Difference]: Finished difference Result 161 states and 178 transitions. [2021-11-05 12:01:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 12:01:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 25 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 12:01:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:00,614 INFO L225 Difference]: With dead ends: 161 [2021-11-05 12:01:00,614 INFO L226 Difference]: Without dead ends: 159 [2021-11-05 12:01:00,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1587.82ms TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:01:00,615 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 163 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 348.75ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:00,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1049 Invalid, 792 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [18 Valid, 324 Invalid, 0 Unknown, 450 Unchecked, 348.75ms Time] [2021-11-05 12:01:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-05 12:01:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 107. [2021-11-05 12:01:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 12:01:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-11-05 12:01:00,623 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 45 [2021-11-05 12:01:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:00,623 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-11-05 12:01:00,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 25 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 12:01:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-11-05 12:01:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 12:01:00,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:00,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:00,649 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 12:01:00,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:00,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:00,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1410555856, now seen corresponding path program 1 times [2021-11-05 12:01:00,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:00,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605919279] [2021-11-05 12:01:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:00,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:00,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:00,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636590875] [2021-11-05 12:01:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:00,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:00,867 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 12:01:00,868 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 12:01:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:01,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-05 12:01:01,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:01,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-05 12:01:01,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-05 12:01:01,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:01,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2021-11-05 12:01:01,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:01,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-11-05 12:01:01,414 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 9 treesize of output 3 [2021-11-05 12:01:01,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:01,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-05 12:01:01,563 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 12:01:01,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:01,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:01,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605919279] [2021-11-05 12:01:01,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:01,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636590875] [2021-11-05 12:01:01,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636590875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:01,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:01,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:01:01,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41909866] [2021-11-05 12:01:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:01,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:01:01,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:01:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:01:01,566 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 12:01:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:01,876 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-11-05 12:01:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:01:01,877 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-05 12:01:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:01,878 INFO L225 Difference]: With dead ends: 145 [2021-11-05 12:01:01,878 INFO L226 Difference]: Without dead ends: 107 [2021-11-05 12:01:01,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 262.59ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:01:01,879 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 468 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.46ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:01,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 537 Invalid, 209 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [44 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 125.46ms Time] [2021-11-05 12:01:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-05 12:01:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-11-05 12:01:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 97 states have (on average 1.175257731958763) internal successors, (114), 104 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 12:01:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2021-11-05 12:01:01,886 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 58 [2021-11-05 12:01:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:01,886 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2021-11-05 12:01:01,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 12:01:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2021-11-05 12:01:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:01:01,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:01,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:01,914 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 12:01:02,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:02,088 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -350028616, now seen corresponding path program 1 times [2021-11-05 12:01:02,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:02,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663629835] [2021-11-05 12:01:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:02,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:02,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:02,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374309268] [2021-11-05 12:01:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:02,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:02,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:02,116 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 12:01:02,146 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 12:01:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:02,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 12:01:02,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:02,389 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 12:01:02,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:02,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:02,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663629835] [2021-11-05 12:01:02,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:02,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374309268] [2021-11-05 12:01:02,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374309268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:02,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:02,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:01:02,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410027154] [2021-11-05 12:01:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:02,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:01:02,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:01:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:02,392 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:02,528 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2021-11-05 12:01:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:01:02,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 12:01:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:02,529 INFO L225 Difference]: With dead ends: 212 [2021-11-05 12:01:02,529 INFO L226 Difference]: Without dead ends: 156 [2021-11-05 12:01:02,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.53ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:01:02,530 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 53 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:02,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 362 Invalid, 121 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [10 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 96.49ms Time] [2021-11-05 12:01:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-05 12:01:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 111. [2021-11-05 12:01:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 110 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 12:01:02,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-11-05 12:01:02,537 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 60 [2021-11-05 12:01:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:02,537 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-11-05 12:01:02,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:02,537 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-11-05 12:01:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:01:02,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:02,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:02,559 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 12:01:02,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:02,751 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash -292770314, now seen corresponding path program 1 times [2021-11-05 12:01:02,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:02,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23756699] [2021-11-05 12:01:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:02,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:02,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:02,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888710817] [2021-11-05 12:01:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:02,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:02,772 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 12:01:02,785 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 12:01:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-05 12:01:02,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:03,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-05 12:01:03,289 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 12:01:03,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:03,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:03,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23756699] [2021-11-05 12:01:03,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:03,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888710817] [2021-11-05 12:01:03,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888710817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:03,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:03,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:01:03,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430648742] [2021-11-05 12:01:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:03,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:01:03,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:01:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:01:03,291 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:03,620 INFO L93 Difference]: Finished difference Result 248 states and 260 transitions. [2021-11-05 12:01:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:01:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 12:01:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:03,622 INFO L225 Difference]: With dead ends: 248 [2021-11-05 12:01:03,622 INFO L226 Difference]: Without dead ends: 206 [2021-11-05 12:01:03,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 219.19ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:01:03,622 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 511 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.29ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.82ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:03,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 499 Invalid, 199 Unknown, 0 Unchecked, 2.29ms Time], IncrementalHoareTripleChecker [30 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 167.82ms Time] [2021-11-05 12:01:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-05 12:01:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 128. [2021-11-05 12:01:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 120 states have (on average 1.15) internal successors, (138), 127 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 12:01:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2021-11-05 12:01:03,634 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 60 [2021-11-05 12:01:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:03,635 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2021-11-05 12:01:03,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2021-11-05 12:01:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:01:03,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:03,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:03,661 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 12:01:03,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:03,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1030086986, now seen corresponding path program 1 times [2021-11-05 12:01:03,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:03,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154632411] [2021-11-05 12:01:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:03,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:03,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:03,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189644709] [2021-11-05 12:01:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:03,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:03,869 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 12:01:03,870 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 12:01:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:04,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 206 conjunts are in the unsatisfiable core [2021-11-05 12:01:04,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:04,127 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-05 12:01:04,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-05 12:01:04,196 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-05 12:01:04,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 29 [2021-11-05 12:01:04,470 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-05 12:01:04,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 47 [2021-11-05 12:01:04,633 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-05 12:01:04,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 49 treesize of output 74 [2021-11-05 12:01:05,245 INFO L354 Elim1Store]: treesize reduction 136, result has 13.4 percent of original size [2021-11-05 12:01:05,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 53 treesize of output 62 [2021-11-05 12:01:05,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:05,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:05,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:05,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-05 12:01:05,911 INFO L354 Elim1Store]: treesize reduction 312, result has 14.0 percent of original size [2021-11-05 12:01:05,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 70 treesize of output 102 [2021-11-05 12:01:06,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:01:06,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:06,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-05 12:01:07,668 INFO L354 Elim1Store]: treesize reduction 186, result has 13.9 percent of original size [2021-11-05 12:01:07,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 95 treesize of output 111 [2021-11-05 12:01:08,747 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-11-05 12:01:08,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 116 [2021-11-05 12:01:08,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:08,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:08,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:08,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2021-11-05 12:01:09,597 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 12:01:09,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:09,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:09,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154632411] [2021-11-05 12:01:09,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:09,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189644709] [2021-11-05 12:01:09,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189644709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:09,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:09,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-05 12:01:09,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266926333] [2021-11-05 12:01:09,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:09,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-05 12:01:09,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-05 12:01:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2021-11-05 12:01:09,600 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:10,194 INFO L93 Difference]: Finished difference Result 238 states and 254 transitions. [2021-11-05 12:01:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-05 12:01:10,195 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 12:01:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:10,198 INFO L225 Difference]: With dead ends: 238 [2021-11-05 12:01:10,198 INFO L226 Difference]: Without dead ends: 236 [2021-11-05 12:01:10,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1901.73ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 12:01:10,199 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 129 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 154.75ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:10,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 1298 Invalid, 463 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 316 Unchecked, 154.75ms Time] [2021-11-05 12:01:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-05 12:01:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 179. [2021-11-05 12:01:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 178 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 12:01:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 195 transitions. [2021-11-05 12:01:10,212 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 195 transitions. Word has length 60 [2021-11-05 12:01:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:10,212 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 195 transitions. [2021-11-05 12:01:10,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 195 transitions. [2021-11-05 12:01:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:01:10,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:10,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:10,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:10,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:10,428 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 129931512, now seen corresponding path program 1 times [2021-11-05 12:01:10,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:10,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729636185] [2021-11-05 12:01:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:10,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:10,439 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:10,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677013625] [2021-11-05 12:01:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:10,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:10,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:10,441 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 12:01:10,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 12:01:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:10,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 12:01:10,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:10,689 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 12:01:10,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:10,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:10,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729636185] [2021-11-05 12:01:10,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:10,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677013625] [2021-11-05 12:01:10,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677013625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:10,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:10,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:01:10,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099416654] [2021-11-05 12:01:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:10,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:01:10,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:01:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:10,691 INFO L87 Difference]: Start difference. First operand 179 states and 195 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:10,827 INFO L93 Difference]: Finished difference Result 277 states and 296 transitions. [2021-11-05 12:01:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:01:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 12:01:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:10,829 INFO L225 Difference]: With dead ends: 277 [2021-11-05 12:01:10,829 INFO L226 Difference]: Without dead ends: 218 [2021-11-05 12:01:10,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.42ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:01:10,830 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 61 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.99ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:10,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 346 Invalid, 124 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 119.99ms Time] [2021-11-05 12:01:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-05 12:01:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 176. [2021-11-05 12:01:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 168 states have (on average 1.125) internal successors, (189), 175 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 12:01:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2021-11-05 12:01:10,845 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 60 [2021-11-05 12:01:10,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:10,846 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2021-11-05 12:01:10,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2021-11-05 12:01:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:01:10,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:10,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:10,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:11,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-05 12:01:11,064 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -4081994, now seen corresponding path program 1 times [2021-11-05 12:01:11,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:11,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532844044] [2021-11-05 12:01:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:11,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:11,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:11,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213236382] [2021-11-05 12:01:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:11,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:11,080 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:01:11,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 12:01:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 122 conjunts are in the unsatisfiable core [2021-11-05 12:01:11,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:11,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-05 12:01:11,453 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 17 treesize of output 9 [2021-11-05 12:01:11,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-05 12:01:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2021-11-05 12:01:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:01:11,854 INFO L354 Elim1Store]: treesize reduction 96, result has 22.6 percent of original size [2021-11-05 12:01:11,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 66 [2021-11-05 12:01:12,001 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-05 12:01:12,002 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 107 treesize of output 47 [2021-11-05 12:01:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:01:12,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:12,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:12,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532844044] [2021-11-05 12:01:12,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:12,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213236382] [2021-11-05 12:01:12,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213236382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:12,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:12,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:01:12,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51418029] [2021-11-05 12:01:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:12,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:01:12,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:01:12,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:01:12,086 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:14,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-05 12:01:15,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-05 12:01:24,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 12:01:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:24,421 INFO L93 Difference]: Finished difference Result 508 states and 536 transitions. [2021-11-05 12:01:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 12:01:24,422 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-05 12:01:24,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:24,423 INFO L225 Difference]: With dead ends: 508 [2021-11-05 12:01:24,423 INFO L226 Difference]: Without dead ends: 446 [2021-11-05 12:01:24,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 5597.25ms TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 12:01:24,424 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 794 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6800.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.08ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6900.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:24,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1479 Invalid, 587 Unknown, 0 Unchecked, 6.08ms Time], IncrementalHoareTripleChecker [49 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 6900.88ms Time] [2021-11-05 12:01:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-05 12:01:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 181. [2021-11-05 12:01:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 173 states have (on average 1.115606936416185) internal successors, (193), 180 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 12:01:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2021-11-05 12:01:24,442 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 60 [2021-11-05 12:01:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:24,443 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2021-11-05 12:01:24,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:24,443 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2021-11-05 12:01:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 12:01:24,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:24,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:24,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:24,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-05 12:01:24,656 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 751655186, now seen corresponding path program 1 times [2021-11-05 12:01:24,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:24,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795177218] [2021-11-05 12:01:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:24,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:24,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:24,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957292803] [2021-11-05 12:01:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:24,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:24,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:24,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:01:24,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 12:01:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:24,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-05 12:01:24,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:24,920 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 12:01:24,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:24,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:24,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795177218] [2021-11-05 12:01:24,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:24,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957292803] [2021-11-05 12:01:24,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957292803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:24,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:24,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:01:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254431625] [2021-11-05 12:01:24,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:24,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:01:24,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:01:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:01:24,922 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:25,043 INFO L93 Difference]: Finished difference Result 420 states and 443 transitions. [2021-11-05 12:01:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:01:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-05 12:01:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:25,046 INFO L225 Difference]: With dead ends: 420 [2021-11-05 12:01:25,046 INFO L226 Difference]: Without dead ends: 298 [2021-11-05 12:01:25,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.32ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:01:25,047 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 245 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:25,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 704 Invalid, 96 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 78.44ms Time] [2021-11-05 12:01:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-05 12:01:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 169. [2021-11-05 12:01:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 168 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 12:01:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 177 transitions. [2021-11-05 12:01:25,061 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 177 transitions. Word has length 62 [2021-11-05 12:01:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:25,062 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 177 transitions. [2021-11-05 12:01:25,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 177 transitions. [2021-11-05 12:01:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 12:01:25,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:25,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:25,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:25,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-05 12:01:25,284 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 12:01:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash -344958502, now seen corresponding path program 1 times [2021-11-05 12:01:25,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:25,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890513398] [2021-11-05 12:01:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:25,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:25,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:25,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524910310] [2021-11-05 12:01:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:25,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:25,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:25,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:01:25,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 12:01:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-05 12:01:25,801 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-05 12:01:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-05 12:01:26,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-05 12:01:26,435 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-05 12:01:26,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2021-11-05 12:01:26,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2021-11-05 12:01:26,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2021-11-05 12:01:26,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2021-11-05 12:01:26,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2021-11-05 12:01:26,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2021-11-05 12:01:26,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2021-11-05 12:01:26,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2021-11-05 12:01:26,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2021-11-05 12:01:26,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:26,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-05 12:01:26,653 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:26,656 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-05 12:01:26,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.11 12:01:26 BoogieIcfgContainer [2021-11-05 12:01:26,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-05 12:01:26,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-05 12:01:26,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-05 12:01:26,729 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-05 12:01:26,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:00:53" (3/4) ... [2021-11-05 12:01:26,730 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-05 12:01:26,798 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-05 12:01:26,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-05 12:01:26,799 INFO L158 Benchmark]: Toolchain (without parser) took 35420.51ms. Allocated memory was 67.1MB in the beginning and 174.1MB in the end (delta: 107.0MB). Free memory was 41.1MB in the beginning and 60.9MB in the end (delta: -19.8MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,799 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-05 12:01:26,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1489.41ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 40.9MB in the beginning and 62.6MB in the end (delta: -21.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.73ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 54.7MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,801 INFO L158 Benchmark]: Boogie Preprocessor took 34.25ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 51.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,801 INFO L158 Benchmark]: RCFGBuilder took 776.18ms. Allocated memory is still 98.6MB. Free memory was 51.0MB in the beginning and 39.2MB in the end (delta: 11.8MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,801 INFO L158 Benchmark]: TraceAbstraction took 32898.25ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 38.6MB in the beginning and 73.5MB in the end (delta: -34.8MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,801 INFO L158 Benchmark]: Witness Printer took 70.28ms. Allocated memory is still 174.1MB. Free memory was 73.5MB in the beginning and 60.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-05 12:01:26,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1489.41ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 40.9MB in the beginning and 62.6MB in the end (delta: -21.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.73ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 54.7MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.25ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 51.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 776.18ms. Allocated memory is still 98.6MB. Free memory was 51.0MB in the beginning and 39.2MB in the end (delta: 11.8MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32898.25ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 38.6MB in the beginning and 73.5MB in the end (delta: -34.8MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * Witness Printer took 70.28ms. Allocated memory is still 174.1MB. Free memory was 73.5MB in the beginning and 60.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L2762-L2767] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7359] static __thread int tl_last_error = 0; VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L7586] struct aws_array_list list = {0, __VERIFIER_nondet_ulong(), __VERIFIER_nondet_ulong(), __VERIFIER_nondet_ulong(), 0}; [L7589] size_t item_size; [L7590] size_t initial_item_allocation; [L7591] size_t len; [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L7599] EXPR \read(len) [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2782] return malloc(size); [L7599] uint8_t *raw_array = bounded_malloc(len); [L7600] struct store_byte_from_buffer old_byte; [L7601] \read(len) [L7183] COND FALSE !(size > 0 && array && storage) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L3246-L3247] list->alloc = ((void *)0) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3250] int no_overflow = !aws_mul_size_checked(item_count, item_size, &list->current_size); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L3253] list->item_size = item_size [L3254] list->length = 0 [L3255] list->data = raw_array [L3263] COND FALSE !(!list) [L3268] size_t required_size = 0; [L3272] EXPR list->length [L3272] EXPR list->item_size [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3270-L3272] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L3275] EXPR list->current_size [L3275] EXPR \read(required_size) [L3274-L3275] _Bool current_size_is_valid = (list->current_size >= required_size); [L3279] EXPR list->current_size [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279] EXPR list->data [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L3281] EXPR list->current_size [L3281] EXPR (((list->current_size)) == 0) || ((list->data)) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L3277-L3281] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L3284] EXPR list->item_size [L3283-L3284] _Bool item_size_is_valid = (list->item_size != 0); [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3268] size_t required_size = 0; [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L3263] COND FALSE !(!list) [L3268] size_t required_size = 0; [L3272] EXPR list->length [L3272] EXPR list->item_size [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=0] [L2496] COND TRUE __CPROVER_overflow_mult(a, b) [L7366] tl_last_error = err VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L1998] return (-1); VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L2497] return aws_raise_error(AWS_ERROR_OVERFLOW_DETECTED); [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3270-L3272] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L3275] EXPR list->current_size [L3275] EXPR \read(required_size) [L3274-L3275] _Bool current_size_is_valid = (list->current_size >= required_size); [L3279] EXPR list->current_size [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279] EXPR list->data [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L3281] EXPR list->current_size [L3281] EXPR (((list->current_size)) == 0) || ((list->data)) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L3277-L3281] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L3284] EXPR list->item_size [L3283-L3284] _Bool item_size_is_valid = (list->item_size != 0); [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3268] size_t required_size = 0; [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L223] COND TRUE !cond VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] [L223] reach_error() VAL [s_can_fail_allocator_static={8:0}, tl_last_error=4] - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 113 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 32778.29ms, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 25.86ms, AutomataDifference: 15626.67ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 11.34ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3239 SdHoareTripleChecker+Valid, 8145.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3239 mSDsluCounter, 6942 SdHoareTripleChecker+Invalid, 7814.30ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 766 IncrementalHoareTripleChecker+Unchecked, 5806 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1787 IncrementalHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 1136 mSDtfsCounter, 1787 mSolverCounterSat, 36.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 427 SyntacticMatches, 3 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 9839.90ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=10, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 138.70ms AutomataMinimizationTime, 11 MinimizatonAttempts, 673 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 353.76ms SsaConstructionTime, 1567.18ms SatisfiabilityAnalysisTime, 11170.32ms InterpolantComputationTime, 640 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 567 ConstructedInterpolants, 79 QuantifiedInterpolants, 8750 SizeOfPredicates, 348 NumberOfNonLiveVariables, 5593 ConjunctsInSsa, 685 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-05 12:01:26,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE