./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_hash_table_init_bounded_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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:12:51,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:12:51,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:12:51,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:12:51,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:12:51,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:12:51,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:12:51,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:12:51,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:12:51,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:12:51,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:12:51,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:12:51,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:12:51,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:12:51,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:12:51,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:12:51,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:12:51,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:12:51,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:12:51,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:12:51,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:12:51,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:12:51,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:12:51,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:12:51,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:12:51,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:12:51,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:12:51,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:12:51,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:12:51,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:12:51,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:12:51,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:12:51,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:12:51,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:12:51,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:12:51,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:12:51,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:12:51,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:12:51,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:12:51,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:12:51,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:12:51,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:12:51,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:12:51,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:12:51,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:12:51,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:12:51,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:12:51,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:12:51,773 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:12:51,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:12:51,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:12:51,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:12:51,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:12:51,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:12:51,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:12:51,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:12:51,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:12:51,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:12:51,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:12:51,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:12:51,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:12:51,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:12:51,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:12:51,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:12:51,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:12:51,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:12:51,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:12:51,776 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:12:51,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:12:51,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:12:51,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:12:51,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2021-11-03 23:12:51,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:12:51,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:12:51,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:12:51,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:12:51,961 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:12:51,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-03 23:12:52,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeea551df/237011ba52174d719a986a987a93244b/FLAGd7da3b126 [2021-11-03 23:12:52,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:12:52,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-03 23:12:52,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeea551df/237011ba52174d719a986a987a93244b/FLAGd7da3b126 [2021-11-03 23:12:52,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeea551df/237011ba52174d719a986a987a93244b [2021-11-03 23:12:52,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:12:52,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:12:52,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:12:52,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:12:52,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:12:53,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:12:52" (1/1) ... [2021-11-03 23:12:53,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41031e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:53, skipping insertion in model container [2021-11-03 23:12:53,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:12:52" (1/1) ... [2021-11-03 23:12:53,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:12:53,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:12:53,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2021-11-03 23:12:53,354 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_hash_table_init_bounded_harness.i[4561,4574] [2021-11-03 23:12:53,374 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:12:53,381 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:12:53,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:53,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,238 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:12:54,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:12:54,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:12:54,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:12:54,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:12:54,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:12:54,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:12:54,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:12:54,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:12:54,249 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:12:54,366 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:12:54,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,632 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:12:54,725 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:12:54,742 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_hash_table_init_bounded_harness.i[4501,4514] [2021-11-03 23:12:54,743 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_hash_table_init_bounded_harness.i[4561,4574] [2021-11-03 23:12:54,744 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:12:54,745 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:12:54,771 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,772 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,772 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,772 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,773 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:12:54,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:12:54,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:12:54,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:12:54,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:12:54,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:12:54,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:12:54,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:12:54,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:12:54,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:12:54,822 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:12:54,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:12:54,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:12:55,105 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:12:55,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55 WrapperNode [2021-11-03 23:12:55,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:12:55,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:12:55,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:12:55,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:12:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:12:55,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:12:55,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:12:55,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:12:55,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:12:55,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:12:55,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:12:55,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:12:55,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (1/1) ... [2021-11-03 23:12:55,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:12:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:12:55,441 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) [2021-11-03 23:12:55,448 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 [2021-11-03 23:12:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 23:12:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:12:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:12:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:12:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:12:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:12:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-03 23:12:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:12:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:12:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:12:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:12:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:12:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 23:12:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:12:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:12:59,351 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !true; [2021-11-03 23:12:59,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:12:59,358 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-03 23:12:59,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:12:59 BoogieIcfgContainer [2021-11-03 23:12:59,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:12:59,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:12:59,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:12:59,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:12:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:12:52" (1/3) ... [2021-11-03 23:12:59,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39227b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:12:59, skipping insertion in model container [2021-11-03 23:12:59,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:12:55" (2/3) ... [2021-11-03 23:12:59,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39227b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:12:59, skipping insertion in model container [2021-11-03 23:12:59,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:12:59" (3/3) ... [2021-11-03 23:12:59,369 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2021-11-03 23:12:59,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:12:59,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-03 23:12:59,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:12:59,417 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 [2021-11-03 23:12:59,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-03 23:12:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:12:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 23:12:59,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:12:59,443 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] [2021-11-03 23:12:59,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:12:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:12:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -227722536, now seen corresponding path program 1 times [2021-11-03 23:12:59,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:12:59,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028150823] [2021-11-03 23:12:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:12:59,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:12:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:12:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:12:59,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:12:59,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028150823] [2021-11-03 23:12:59,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028150823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:12:59,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:12:59,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:12:59,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107739244] [2021-11-03 23:12:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:12:59,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:12:59,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:12:59,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:12:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:12:59,927 INFO L87 Difference]: Start difference. First operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:01,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:02,966 INFO L93 Difference]: Finished difference Result 243 states and 324 transitions. [2021-11-03 23:13:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:13:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-03 23:13:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:02,974 INFO L225 Difference]: With dead ends: 243 [2021-11-03 23:13:02,974 INFO L226 Difference]: Without dead ends: 116 [2021-11-03 23:13:02,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:13:02,978 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2724.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2983.92ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:02,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 148 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 1 Unknown, 0 Unchecked, 2983.92ms Time] [2021-11-03 23:13:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-03 23:13:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-03 23:13:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 115 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-03 23:13:03,005 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 33 [2021-11-03 23:13:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:03,006 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-03 23:13:03,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-03 23:13:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 23:13:03,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:03,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:03,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:13:03,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1424964684, now seen corresponding path program 1 times [2021-11-03 23:13:03,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:03,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889383669] [2021-11-03 23:13:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:03,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:03,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:03,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889383669] [2021-11-03 23:13:03,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889383669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:03,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:03,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:03,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309948665] [2021-11-03 23:13:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:03,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:03,252 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:05,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:09,071 INFO L93 Difference]: Finished difference Result 307 states and 372 transitions. [2021-11-03 23:13:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:09,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-03 23:13:09,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:09,074 INFO L225 Difference]: With dead ends: 307 [2021-11-03 23:13:09,074 INFO L226 Difference]: Without dead ends: 212 [2021-11-03 23:13:09,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:09,075 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5220.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.44ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5705.88ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:09,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 642 Unknown, 0 Unchecked, 14.44ms Time], IncrementalHoareTripleChecker [2 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 5705.88ms Time] [2021-11-03 23:13:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-03 23:13:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 119. [2021-11-03 23:13:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 118 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2021-11-03 23:13:09,084 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 33 [2021-11-03 23:13:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:09,084 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2021-11-03 23:13:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2021-11-03 23:13:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 23:13:09,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:09,085 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] [2021-11-03 23:13:09,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:13:09,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash 403896330, now seen corresponding path program 1 times [2021-11-03 23:13:09,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:09,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371046017] [2021-11-03 23:13:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:09,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:09,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:09,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371046017] [2021-11-03 23:13:09,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371046017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:09,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:09,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:09,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143366559] [2021-11-03 23:13:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:09,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:09,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:09,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:09,301 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:11,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:13,262 INFO L93 Difference]: Finished difference Result 305 states and 368 transitions. [2021-11-03 23:13:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-03 23:13:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:13,263 INFO L225 Difference]: With dead ends: 305 [2021-11-03 23:13:13,263 INFO L226 Difference]: Without dead ends: 212 [2021-11-03 23:13:13,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:13,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 235 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3553.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3888.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:13,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 0 Invalid, 401 Unknown, 0 Unchecked, 7.98ms Time], IncrementalHoareTripleChecker [2 Valid, 398 Invalid, 1 Unknown, 0 Unchecked, 3888.49ms Time] [2021-11-03 23:13:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-03 23:13:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 119. [2021-11-03 23:13:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.2155172413793103) internal successors, (141), 118 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2021-11-03 23:13:13,274 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 33 [2021-11-03 23:13:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:13,274 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2021-11-03 23:13:13,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2021-11-03 23:13:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 23:13:13,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:13,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:13,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:13:13,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1574761884, now seen corresponding path program 1 times [2021-11-03 23:13:13,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:13,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703419383] [2021-11-03 23:13:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:13,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:13,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:13,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703419383] [2021-11-03 23:13:13,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703419383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:13,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:13,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:13,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478630790] [2021-11-03 23:13:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:13,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:13,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:13,484 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:15,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:17,804 INFO L93 Difference]: Finished difference Result 301 states and 361 transitions. [2021-11-03 23:13:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 23:13:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:17,806 INFO L225 Difference]: With dead ends: 301 [2021-11-03 23:13:17,806 INFO L226 Difference]: Without dead ends: 212 [2021-11-03 23:13:17,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:17,808 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3906.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4249.59ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:17,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 412 Unknown, 0 Unchecked, 5.25ms Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 4249.59ms Time] [2021-11-03 23:13:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-03 23:13:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 121. [2021-11-03 23:13:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 120 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2021-11-03 23:13:17,815 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 34 [2021-11-03 23:13:17,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:17,815 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2021-11-03 23:13:17,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2021-11-03 23:13:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 23:13:17,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:17,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:17,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 23:13:17,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash 441374614, now seen corresponding path program 1 times [2021-11-03 23:13:17,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:17,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088462545] [2021-11-03 23:13:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:17,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:17,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:17,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088462545] [2021-11-03 23:13:17,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088462545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:17,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:17,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:17,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027373230] [2021-11-03 23:13:17,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:17,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:17,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:17,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:17,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:17,991 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:20,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:22,671 INFO L93 Difference]: Finished difference Result 231 states and 273 transitions. [2021-11-03 23:13:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 23:13:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:22,673 INFO L225 Difference]: With dead ends: 231 [2021-11-03 23:13:22,673 INFO L226 Difference]: Without dead ends: 210 [2021-11-03 23:13:22,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:22,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4222.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4612.23ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:22,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 458 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 1 Unknown, 0 Unchecked, 4612.23ms Time] [2021-11-03 23:13:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-03 23:13:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 123. [2021-11-03 23:13:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-11-03 23:13:22,692 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 36 [2021-11-03 23:13:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:22,693 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-11-03 23:13:22,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-11-03 23:13:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 23:13:22,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:22,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:22,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 23:13:22,696 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:22,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1494167710, now seen corresponding path program 1 times [2021-11-03 23:13:22,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:22,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799618807] [2021-11-03 23:13:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:22,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:22,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:22,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799618807] [2021-11-03 23:13:22,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799618807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:22,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:22,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:22,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208795587] [2021-11-03 23:13:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:22,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:22,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:22,894 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:24,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:27,065 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2021-11-03 23:13:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:27,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 23:13:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:27,067 INFO L225 Difference]: With dead ends: 144 [2021-11-03 23:13:27,067 INFO L226 Difference]: Without dead ends: 123 [2021-11-03 23:13:27,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:27,068 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3705.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4119.70ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:27,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 411 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 4119.70ms Time] [2021-11-03 23:13:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-03 23:13:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-11-03 23:13:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.194915254237288) internal successors, (141), 120 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2021-11-03 23:13:27,073 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 36 [2021-11-03 23:13:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:27,074 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2021-11-03 23:13:27,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2021-11-03 23:13:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 23:13:27,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:27,075 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] [2021-11-03 23:13:27,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 23:13:27,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1213946232, now seen corresponding path program 1 times [2021-11-03 23:13:27,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:27,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758151982] [2021-11-03 23:13:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:27,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:27,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:13:27,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098503769] [2021-11-03 23:13:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:27,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:13:27,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:13:27,164 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) [2021-11-03 23:13:27,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:13:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:27,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:13:27,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:13:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:28,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:13:28,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:28,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758151982] [2021-11-03 23:13:28,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:13:28,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098503769] [2021-11-03 23:13:28,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098503769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:28,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:28,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:13:28,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923526655] [2021-11-03 23:13:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:28,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:13:28,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:13:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:28,047 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:30,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:33,596 INFO L93 Difference]: Finished difference Result 269 states and 314 transitions. [2021-11-03 23:13:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:13:33,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-03 23:13:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:33,597 INFO L225 Difference]: With dead ends: 269 [2021-11-03 23:13:33,597 INFO L226 Difference]: Without dead ends: 196 [2021-11-03 23:13:33,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.07ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:13:33,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 165 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4938.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5443.97ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:33,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 0 Invalid, 646 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [6 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 5443.97ms Time] [2021-11-03 23:13:33,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-03 23:13:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 124. [2021-11-03 23:13:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 123 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2021-11-03 23:13:33,604 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 44 [2021-11-03 23:13:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:33,604 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2021-11-03 23:13:33,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2021-11-03 23:13:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 23:13:33,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:33,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:33,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 23:13:33,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:13:33,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 782591100, now seen corresponding path program 1 times [2021-11-03 23:13:33,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:33,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224845279] [2021-11-03 23:13:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:33,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:34,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:34,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224845279] [2021-11-03 23:13:34,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224845279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:34,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:34,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:13:34,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170964250] [2021-11-03 23:13:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:34,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:13:34,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:13:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:13:34,321 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:36,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:40,469 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2021-11-03 23:13:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:13:40,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 23:13:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:40,470 INFO L225 Difference]: With dead ends: 157 [2021-11-03 23:13:40,470 INFO L226 Difference]: Without dead ends: 130 [2021-11-03 23:13:40,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 389.11ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:13:40,471 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5394.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5859.04ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:40,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 750 Unknown, 0 Unchecked, 8.17ms Time], IncrementalHoareTripleChecker [2 Valid, 747 Invalid, 1 Unknown, 0 Unchecked, 5859.04ms Time] [2021-11-03 23:13:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-03 23:13:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-03 23:13:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 125 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2021-11-03 23:13:40,476 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 46 [2021-11-03 23:13:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:40,477 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2021-11-03 23:13:40,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2021-11-03 23:13:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 23:13:40,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:40,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:40,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 23:13:40,478 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1737368834, now seen corresponding path program 1 times [2021-11-03 23:13:40,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:40,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410714248] [2021-11-03 23:13:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:40,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:40,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:40,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410714248] [2021-11-03 23:13:40,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410714248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:40,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:40,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:40,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268964556] [2021-11-03 23:13:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:40,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:40,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:40,686 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:42,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:44,479 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2021-11-03 23:13:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:44,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 23:13:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:44,482 INFO L225 Difference]: With dead ends: 156 [2021-11-03 23:13:44,482 INFO L226 Difference]: Without dead ends: 124 [2021-11-03 23:13:44,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:44,483 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3354.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3742.40ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:44,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 1 Unknown, 0 Unchecked, 3742.40ms Time] [2021-11-03 23:13:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-03 23:13:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-03 23:13:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 123 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 142 transitions. [2021-11-03 23:13:44,488 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 142 transitions. Word has length 46 [2021-11-03 23:13:44,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:44,488 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 142 transitions. [2021-11-03 23:13:44,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 142 transitions. [2021-11-03 23:13:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 23:13:44,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:44,489 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] [2021-11-03 23:13:44,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 23:13:44,489 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:44,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1013812041, now seen corresponding path program 1 times [2021-11-03 23:13:44,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:44,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564789872] [2021-11-03 23:13:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:44,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:44,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:44,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564789872] [2021-11-03 23:13:44,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564789872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:44,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:44,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:13:44,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093393629] [2021-11-03 23:13:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:44,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:13:44,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:13:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:44,852 INFO L87 Difference]: Start difference. First operand 124 states and 142 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:47,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:50,225 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-11-03 23:13:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:13:50,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-03 23:13:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:50,227 INFO L225 Difference]: With dead ends: 153 [2021-11-03 23:13:50,227 INFO L226 Difference]: Without dead ends: 125 [2021-11-03 23:13:50,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 339.19ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:13:50,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4680.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5113.30ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:50,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 478 Unknown, 0 Unchecked, 4.91ms Time], IncrementalHoareTripleChecker [8 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 5113.30ms Time] [2021-11-03 23:13:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-03 23:13:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-03 23:13:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 123 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 140 transitions. [2021-11-03 23:13:50,233 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 140 transitions. Word has length 48 [2021-11-03 23:13:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:50,233 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 140 transitions. [2021-11-03 23:13:50,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 140 transitions. [2021-11-03 23:13:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:13:50,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:50,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:13:50,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 23:13:50,234 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 350590563, now seen corresponding path program 1 times [2021-11-03 23:13:50,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:50,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701897612] [2021-11-03 23:13:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:50,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:50,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:50,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701897612] [2021-11-03 23:13:50,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701897612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:50,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:50,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:13:50,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580080425] [2021-11-03 23:13:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:50,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:13:50,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:13:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:13:50,703 INFO L87 Difference]: Start difference. First operand 124 states and 140 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:52,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:57,297 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2021-11-03 23:13:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 23:13:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:13:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:57,298 INFO L225 Difference]: With dead ends: 164 [2021-11-03 23:13:57,298 INFO L226 Difference]: Without dead ends: 128 [2021-11-03 23:13:57,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 428.03ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:13:57,299 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5852.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6287.28ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:57,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 788 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [5 Valid, 782 Invalid, 1 Unknown, 0 Unchecked, 6287.28ms Time] [2021-11-03 23:13:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-03 23:13:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-11-03 23:13:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1382113821138211) internal successors, (140), 125 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-11-03 23:13:57,303 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 49 [2021-11-03 23:13:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:57,304 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-11-03 23:13:57,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:13:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-11-03 23:13:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 23:13:57,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:57,305 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] [2021-11-03 23:13:57,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 23:13:57,305 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1502732261, now seen corresponding path program 1 times [2021-11-03 23:13:57,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:57,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054622686] [2021-11-03 23:13:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:57,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:57,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:13:57,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671275574] [2021-11-03 23:13:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:57,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:13:57,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:13:57,375 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) [2021-11-03 23:13:57,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:13:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:58,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:13:58,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:13:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:58,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:13:58,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054622686] [2021-11-03 23:13:58,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:13:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671275574] [2021-11-03 23:13:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671275574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:58,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:58,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:58,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588023052] [2021-11-03 23:13:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:58,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:58,254 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2021-11-03 23:14:01,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:03,476 INFO L93 Difference]: Finished difference Result 201 states and 221 transitions. [2021-11-03 23:14:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:14:03,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 [2021-11-03 23:14:03,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:03,477 INFO L225 Difference]: With dead ends: 201 [2021-11-03 23:14:03,477 INFO L226 Difference]: Without dead ends: 126 [2021-11-03 23:14:03,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:03,478 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4779.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5179.09ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:03,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 5179.09ms Time] [2021-11-03 23:14:03,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-03 23:14:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-03 23:14:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.125) internal successors, (135), 122 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2021-11-03 23:14:03,482 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 62 [2021-11-03 23:14:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:03,482 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2021-11-03 23:14:03,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2021-11-03 23:14:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2021-11-03 23:14:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 23:14:03,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:03,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:14:03,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-03 23:14:03,687 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,SelfDestructingSolverStorable11 [2021-11-03 23:14:03,688 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1802692899, now seen corresponding path program 1 times [2021-11-03 23:14:03,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:03,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468406494] [2021-11-03 23:14:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:03,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:03,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:03,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063957523] [2021-11-03 23:14:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:03,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:03,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:03,760 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) [2021-11-03 23:14:03,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:14:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:04,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:14:04,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:04,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:04,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:04,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468406494] [2021-11-03 23:14:04,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:04,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063957523] [2021-11-03 23:14:04,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063957523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:04,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:04,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:04,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991380641] [2021-11-03 23:14:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:04,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:04,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:04,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:04,619 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:06,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:10,184 INFO L93 Difference]: Finished difference Result 240 states and 258 transitions. [2021-11-03 23:14:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:14:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 23:14:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:10,185 INFO L225 Difference]: With dead ends: 240 [2021-11-03 23:14:10,186 INFO L226 Difference]: Without dead ends: 200 [2021-11-03 23:14:10,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.35ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:14:10,186 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5134.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5469.76ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:10,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 590 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [6 Valid, 583 Invalid, 1 Unknown, 0 Unchecked, 5469.76ms Time] [2021-11-03 23:14:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-03 23:14:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 126. [2021-11-03 23:14:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 125 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) [2021-11-03 23:14:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-11-03 23:14:10,192 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 65 [2021-11-03 23:14:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:10,192 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-11-03 23:14:10,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-11-03 23:14:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 23:14:10,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:10,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:14:10,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 23:14:10,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:10,404 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1203315713, now seen corresponding path program 1 times [2021-11-03 23:14:10,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:10,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274099917] [2021-11-03 23:14:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:10,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:10,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:10,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990198868] [2021-11-03 23:14:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:10,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:10,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:10,468 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) [2021-11-03 23:14:10,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:14:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:11,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:14:11,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:11,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:11,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:11,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274099917] [2021-11-03 23:14:11,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:11,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990198868] [2021-11-03 23:14:11,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990198868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:11,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:11,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:14:11,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391985262] [2021-11-03 23:14:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:11,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:14:11,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:14:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:14:11,406 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:13,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:15,652 INFO L93 Difference]: Finished difference Result 166 states and 179 transitions. [2021-11-03 23:14:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:14:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 23:14:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:15,653 INFO L225 Difference]: With dead ends: 166 [2021-11-03 23:14:15,653 INFO L226 Difference]: Without dead ends: 126 [2021-11-03 23:14:15,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:15,654 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3929.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4187.64ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:15,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 381 Unknown, 0 Unchecked, 3.07ms Time], IncrementalHoareTripleChecker [0 Valid, 380 Invalid, 1 Unknown, 0 Unchecked, 4187.64ms Time] [2021-11-03 23:14:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-03 23:14:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-03 23:14:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1166666666666667) internal successors, (134), 122 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-11-03 23:14:15,658 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 67 [2021-11-03 23:14:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:15,659 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-11-03 23:14:15,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-11-03 23:14:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 23:14:15,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:15,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:14:15,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:14:15,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:15,882 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -270416806, now seen corresponding path program 1 times [2021-11-03 23:14:15,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:15,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700213986] [2021-11-03 23:14:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:15,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:15,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:15,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031653902] [2021-11-03 23:14:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:15,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:15,935 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) [2021-11-03 23:14:15,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:14:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:16,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 23:14:16,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:16,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:16,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:16,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700213986] [2021-11-03 23:14:16,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:16,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031653902] [2021-11-03 23:14:16,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031653902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:16,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:16,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:16,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603123619] [2021-11-03 23:14:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:16,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:16,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:16,820 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:18,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:22,183 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2021-11-03 23:14:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:14:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-03 23:14:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:22,184 INFO L225 Difference]: With dead ends: 251 [2021-11-03 23:14:22,185 INFO L226 Difference]: Without dead ends: 210 [2021-11-03 23:14:22,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.58ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:14:22,186 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4873.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5282.63ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:22,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 542 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [1 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 5282.63ms Time] [2021-11-03 23:14:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-03 23:14:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 126. [2021-11-03 23:14:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.113821138211382) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-11-03 23:14:22,193 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 71 [2021-11-03 23:14:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:22,193 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-11-03 23:14:22,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-11-03 23:14:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 23:14:22,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:22,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:14:22,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:14:22,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 23:14:22,395 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1344429706, now seen corresponding path program 1 times [2021-11-03 23:14:22,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:22,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099728560] [2021-11-03 23:14:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:22,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:22,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:22,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379563061] [2021-11-03 23:14:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:22,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:22,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:22,479 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) [2021-11-03 23:14:22,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:14:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:23,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 23:14:23,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:23,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:23,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:23,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099728560] [2021-11-03 23:14:23,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:23,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379563061] [2021-11-03 23:14:23,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379563061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:23,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:23,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:23,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558537337] [2021-11-03 23:14:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:23,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:23,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:23,436 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:25,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:28,246 INFO L93 Difference]: Finished difference Result 167 states and 179 transitions. [2021-11-03 23:14:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:14:28,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 23:14:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:28,248 INFO L225 Difference]: With dead ends: 167 [2021-11-03 23:14:28,248 INFO L226 Difference]: Without dead ends: 121 [2021-11-03 23:14:28,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.79ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:14:28,249 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4309.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4693.77ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:28,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 502 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [0 Valid, 501 Invalid, 1 Unknown, 0 Unchecked, 4693.77ms Time] [2021-11-03 23:14:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-03 23:14:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-03 23:14:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1016949152542372) internal successors, (130), 120 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2021-11-03 23:14:28,253 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 73 [2021-11-03 23:14:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:28,254 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2021-11-03 23:14:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:14:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2021-11-03 23:14:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 23:14:28,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:28,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:14:28,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:14:28,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-03 23:14:28,468 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1199107289, now seen corresponding path program 1 times [2021-11-03 23:14:28,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:28,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815045098] [2021-11-03 23:14:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:28,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:28,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:28,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787982648] [2021-11-03 23:14:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:28,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:28,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:28,565 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) [2021-11-03 23:14:28,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15