./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_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 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:28:22,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:28:22,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:28:22,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:28:22,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:28:22,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:28:22,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:28:22,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:28:22,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:28:22,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:28:22,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:28:22,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:28:22,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:28:22,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:28:22,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:28:22,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:28:22,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:28:22,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:28:22,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:28:22,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:28:22,759 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:28:22,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:28:22,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:28:22,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:28:22,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:28:22,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:28:22,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:28:22,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:28:22,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:28:22,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:28:22,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:28:22,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:28:22,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:28:22,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:28:22,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:28:22,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:28:22,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:28:22,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:28:22,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:28:22,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:28:22,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:28:22,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:28:22,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:28:22,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:28:22,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:28:22,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:28:22,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:28:22,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:28:22,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:28:22,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:28:22,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:28:22,799 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:28:22,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:28:22,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:28:22,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:28:22,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:28:22,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:28:22,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:28:22,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:28:22,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:28:22,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:28:22,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:28:22,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:28:22,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:28:22,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:22,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:28:22,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:28:22,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:28:22,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:28:22,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:28:22,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:28:22,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:28:22,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:28:22,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb [2022-07-13 22:28:22,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:28:23,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:28:23,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:28:23,017 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:28:23,017 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:28:23,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2022-07-13 22:28:23,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ba18d59/ad69da57b7f840f5a5560f734c61c276/FLAG076a0617f [2022-07-13 22:28:23,613 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:28:23,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2022-07-13 22:28:23,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ba18d59/ad69da57b7f840f5a5560f734c61c276/FLAG076a0617f [2022-07-13 22:28:23,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ba18d59/ad69da57b7f840f5a5560f734c61c276 [2022-07-13 22:28:23,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:28:23,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:28:23,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:23,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:28:23,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:28:23,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:28:23" (1/1) ... [2022-07-13 22:28:23,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a9be73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:23, skipping insertion in model container [2022-07-13 22:28:23,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:28:23" (1/1) ... [2022-07-13 22:28:23,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:28:23,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:28:24,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2022-07-13 22:28:24,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2022-07-13 22:28:24,724 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:24,785 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,785 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,787 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:24,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:25,031 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:25,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:25,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:25,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:25,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:25,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:25,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:25,040 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:25,040 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:25,124 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,129 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,177 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:25,197 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:28:25,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2022-07-13 22:28:25,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2022-07-13 22:28:25,238 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:25,250 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,256 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,256 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,259 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,261 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,264 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,265 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,266 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:25,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:25,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:25,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:25,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:25,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:25,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:25,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:25,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:25,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:25,334 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,337 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,348 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,349 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:25,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:25,485 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:28:25,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25 WrapperNode [2022-07-13 22:28:25,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:25,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:25,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:28:25,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:28:25,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,615 INFO L137 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 655 [2022-07-13 22:28:25,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:25,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:28:25,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:28:25,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:28:25,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:28:25,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:28:25,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:28:25,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:28:25,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (1/1) ... [2022-07-13 22:28:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:25,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:25,732 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) [2022-07-13 22:28:25,801 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 [2022-07-13 22:28:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:28:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:28:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:28:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:28:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:28:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:28:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:28:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:28:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:28:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:28:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:28:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:28:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:28:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:28:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:28:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-13 22:28:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-13 22:28:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:28:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:28:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:28:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:28:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:28:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:28:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:28:25,825 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:28:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:28:25,825 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:28:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-13 22:28:25,825 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-13 22:28:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:28:25,826 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:28:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-13 22:28:25,826 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-13 22:28:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:28:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:28:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:28:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:28:25,827 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:28:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:28:25,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:28:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:28:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:28:25,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:28:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:28:25,999 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:28:26,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:28:26,622 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:28:26,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:28:26,628 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 22:28:26,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:26 BoogieIcfgContainer [2022-07-13 22:28:26,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:28:26,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:28:26,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:28:26,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:28:26,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:28:23" (1/3) ... [2022-07-13 22:28:26,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d28906d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:26, skipping insertion in model container [2022-07-13 22:28:26,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:25" (2/3) ... [2022-07-13 22:28:26,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d28906d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:26, skipping insertion in model container [2022-07-13 22:28:26,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:26" (3/3) ... [2022-07-13 22:28:26,636 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2022-07-13 22:28:26,645 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:28:26,646 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:28:26,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:28:26,682 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@af399ce, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3faaa8f [2022-07-13 22:28:26,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:28:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 108 states have (on average 1.212962962962963) internal successors, (131), 109 states have internal predecessors, (131), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-13 22:28:26,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:28:26,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:26,703 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:26,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445885, now seen corresponding path program 1 times [2022-07-13 22:28:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532512421] [2022-07-13 22:28:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:26,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:28:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:28:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:28:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:28:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:28:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:28:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:28:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:28:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:28:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:28:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:28:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:28:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:28:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:28:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:28:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:28:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:28:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:28:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-13 22:28:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:27,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532512421] [2022-07-13 22:28:27,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532512421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:27,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:27,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:28:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856651338] [2022-07-13 22:28:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:27,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:28:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:28:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:27,270 INFO L87 Difference]: Start difference. First operand has 178 states, 108 states have (on average 1.212962962962963) internal successors, (131), 109 states have internal predecessors, (131), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:28:27,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:27,605 INFO L93 Difference]: Finished difference Result 370 states and 533 transitions. [2022-07-13 22:28:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:27,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-07-13 22:28:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:27,615 INFO L225 Difference]: With dead ends: 370 [2022-07-13 22:28:27,615 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 22:28:27,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:27,621 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 114 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:27,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 279 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:28:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 22:28:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2022-07-13 22:28:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-13 22:28:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2022-07-13 22:28:27,662 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 124 [2022-07-13 22:28:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:27,663 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2022-07-13 22:28:27,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:28:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2022-07-13 22:28:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:28:27,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:27,666 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:28:27,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1730209477, now seen corresponding path program 1 times [2022-07-13 22:28:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:27,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437473520] [2022-07-13 22:28:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:28:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:28:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:28:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:28:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:28:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:28:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:28:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:28:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:28:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:28:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:28:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:28:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:28:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:28:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:28:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:28:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:28:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:28:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:28:27,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:27,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437473520] [2022-07-13 22:28:27,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437473520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:28:27,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605915132] [2022-07-13 22:28:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:27,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:27,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:27,972 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) [2022-07-13 22:28:27,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:28:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:28,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:28:28,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 22:28:28,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:28,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605915132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:28,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:28:28,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 22:28:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328896662] [2022-07-13 22:28:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:28,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:28:28,380 INFO L87 Difference]: Start difference. First operand 169 states and 220 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:28:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:28,568 INFO L93 Difference]: Finished difference Result 311 states and 411 transitions. [2022-07-13 22:28:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2022-07-13 22:28:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:28,570 INFO L225 Difference]: With dead ends: 311 [2022-07-13 22:28:28,570 INFO L226 Difference]: Without dead ends: 171 [2022-07-13 22:28:28,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:28:28,572 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 229 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:28,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 618 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-13 22:28:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-13 22:28:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (55), 50 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-13 22:28:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2022-07-13 22:28:28,586 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 124 [2022-07-13 22:28:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:28,586 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2022-07-13 22:28:28,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:28:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2022-07-13 22:28:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 22:28:28,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:28,588 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:28,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:28,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:28,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1300515237, now seen corresponding path program 1 times [2022-07-13 22:28:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102062628] [2022-07-13 22:28:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:28,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:28,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285741749] [2022-07-13 22:28:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:28,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:28,855 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) [2022-07-13 22:28:28,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:28:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:29,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-13 22:28:29,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:29,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:29,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102062628] [2022-07-13 22:28:29,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285741749] [2022-07-13 22:28:29,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285741749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:29,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:29,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:28:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450092444] [2022-07-13 22:28:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:28:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:28:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:28:29,285 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:28:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:29,507 INFO L93 Difference]: Finished difference Result 279 states and 368 transitions. [2022-07-13 22:28:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:28:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2022-07-13 22:28:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:29,509 INFO L225 Difference]: With dead ends: 279 [2022-07-13 22:28:29,509 INFO L226 Difference]: Without dead ends: 171 [2022-07-13 22:28:29,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:28:29,510 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 245 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:29,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 747 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:28:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-13 22:28:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-13 22:28:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2022-07-13 22:28:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-07-13 22:28:29,523 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 154 [2022-07-13 22:28:29,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:29,524 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-07-13 22:28:29,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:28:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-07-13 22:28:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:28:29,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:29,526 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:29,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:29,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 22:28:29,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1091978033, now seen corresponding path program 2 times [2022-07-13 22:28:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:29,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831638503] [2022-07-13 22:28:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:29,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:29,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:29,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372721211] [2022-07-13 22:28:29,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:28:29,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:29,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:29,795 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) [2022-07-13 22:28:29,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:28:30,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:28:30,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:28:30,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:28:30,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-13 22:28:30,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831638503] [2022-07-13 22:28:30,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372721211] [2022-07-13 22:28:30,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372721211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:30,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:30,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:28:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840380331] [2022-07-13 22:28:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:28:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:28:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:28:30,272 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:28:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:30,546 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2022-07-13 22:28:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:28:30,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 169 [2022-07-13 22:28:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:30,548 INFO L225 Difference]: With dead ends: 268 [2022-07-13 22:28:30,548 INFO L226 Difference]: Without dead ends: 169 [2022-07-13 22:28:30,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:28:30,549 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 246 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:30,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1007 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:28:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-13 22:28:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-07-13 22:28:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 102 states have internal predecessors, (117), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-13 22:28:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 219 transitions. [2022-07-13 22:28:30,559 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 219 transitions. Word has length 169 [2022-07-13 22:28:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:30,560 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 219 transitions. [2022-07-13 22:28:30,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:28:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 219 transitions. [2022-07-13 22:28:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 22:28:30,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:30,562 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:30,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:30,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1928427287, now seen corresponding path program 1 times [2022-07-13 22:28:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498331023] [2022-07-13 22:28:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:30,830 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:30,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765603517] [2022-07-13 22:28:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:30,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:30,844 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) [2022-07-13 22:28:30,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:28:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:31,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 22:28:31,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 22:28:31,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:31,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498331023] [2022-07-13 22:28:31,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:31,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765603517] [2022-07-13 22:28:31,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765603517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:31,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:31,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:28:31,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862433178] [2022-07-13 22:28:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:28:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:28:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:28:31,376 INFO L87 Difference]: Start difference. First operand 169 states and 219 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 22:28:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:31,473 INFO L93 Difference]: Finished difference Result 329 states and 436 transitions. [2022-07-13 22:28:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:28:31,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2022-07-13 22:28:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:31,475 INFO L225 Difference]: With dead ends: 329 [2022-07-13 22:28:31,475 INFO L226 Difference]: Without dead ends: 226 [2022-07-13 22:28:31,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:28:31,476 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 50 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:31,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1650 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-13 22:28:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2022-07-13 22:28:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 114 states have internal predecessors, (131), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 56 states have call successors, (57) [2022-07-13 22:28:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2022-07-13 22:28:31,492 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 199 [2022-07-13 22:28:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:31,492 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2022-07-13 22:28:31,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 22:28:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2022-07-13 22:28:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 22:28:31,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:31,494 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:31,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:31,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:31,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:31,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1634572583, now seen corresponding path program 1 times [2022-07-13 22:28:31,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:31,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842248923] [2022-07-13 22:28:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:31,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:31,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810539315] [2022-07-13 22:28:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:31,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:31,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:31,833 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) [2022-07-13 22:28:31,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:28:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:32,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:28:32,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 22:28:32,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:32,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:32,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842248923] [2022-07-13 22:28:32,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:32,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810539315] [2022-07-13 22:28:32,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810539315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:32,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:32,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:28:32,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209310125] [2022-07-13 22:28:32,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:32,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:32,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:32,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:28:32,318 INFO L87 Difference]: Start difference. First operand 188 states and 246 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 22:28:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:32,432 INFO L93 Difference]: Finished difference Result 339 states and 451 transitions. [2022-07-13 22:28:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2022-07-13 22:28:32,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:32,435 INFO L225 Difference]: With dead ends: 339 [2022-07-13 22:28:32,435 INFO L226 Difference]: Without dead ends: 230 [2022-07-13 22:28:32,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:28:32,436 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 43 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:32,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1196 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-13 22:28:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 194. [2022-07-13 22:28:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 116 states have (on average 1.146551724137931) internal successors, (133), 117 states have internal predecessors, (133), 61 states have call successors, (61), 16 states have call predecessors, (61), 16 states have return successors, (60), 60 states have call predecessors, (60), 59 states have call successors, (60) [2022-07-13 22:28:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 254 transitions. [2022-07-13 22:28:32,449 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 254 transitions. Word has length 199 [2022-07-13 22:28:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:32,450 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 254 transitions. [2022-07-13 22:28:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 22:28:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 254 transitions. [2022-07-13 22:28:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 22:28:32,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:32,452 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:32,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:32,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:32,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:32,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1629353815, now seen corresponding path program 1 times [2022-07-13 22:28:32,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:32,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045851407] [2022-07-13 22:28:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:32,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52434210] [2022-07-13 22:28:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:32,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:32,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:32,729 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) [2022-07-13 22:28:32,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:28:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:33,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 22:28:33,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-13 22:28:33,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:33,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045851407] [2022-07-13 22:28:33,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:33,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52434210] [2022-07-13 22:28:33,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52434210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:33,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:33,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:28:33,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119462371] [2022-07-13 22:28:33,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:33,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:28:33,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:33,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:28:33,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:33,167 INFO L87 Difference]: Start difference. First operand 194 states and 254 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-13 22:28:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:33,237 INFO L93 Difference]: Finished difference Result 297 states and 385 transitions. [2022-07-13 22:28:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 199 [2022-07-13 22:28:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:33,239 INFO L225 Difference]: With dead ends: 297 [2022-07-13 22:28:33,239 INFO L226 Difference]: Without dead ends: 169 [2022-07-13 22:28:33,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:28:33,240 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 2 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:33,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 768 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:33,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-13 22:28:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-07-13 22:28:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 102 states have internal predecessors, (114), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-13 22:28:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2022-07-13 22:28:33,248 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 199 [2022-07-13 22:28:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:33,248 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2022-07-13 22:28:33,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-13 22:28:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2022-07-13 22:28:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-13 22:28:33,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:33,250 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:33,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:33,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:33,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash 140333254, now seen corresponding path program 1 times [2022-07-13 22:28:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:33,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844698445] [2022-07-13 22:28:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:33,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:33,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358218365] [2022-07-13 22:28:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:33,519 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) [2022-07-13 22:28:33,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:28:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:34,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 380 conjunts are in the unsatisfiable core [2022-07-13 22:28:34,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:34,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:28:34,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:28:34,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:28:34,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:28:34,882 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-13 22:28:34,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-07-13 22:28:35,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:28:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:57,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:28:57,593 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:28:57,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-13 22:29:04,185 INFO L356 Elim1Store]: treesize reduction 129, result has 28.7 percent of original size [2022-07-13 22:29:04,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 51 treesize of output 85 [2022-07-13 22:29:04,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-13 22:29:19,087 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-13 22:29:19,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-13 22:29:19,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:19,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:29:19,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-07-13 22:30:08,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:08,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:30:08,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:08,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:30:08,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:09,166 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-07-13 22:30:09,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 84 treesize of output 76 [2022-07-13 22:31:25,209 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-13 22:31:25,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 165 treesize of output 101 [2022-07-13 22:31:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 83 proven. 286 refuted. 3 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 22:31:25,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:37,023 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification that was a NOOP. DAG size: 83 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:31:56,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:56,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844698445] [2022-07-13 22:31:56,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:56,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358218365] [2022-07-13 22:31:56,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358218365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:31:56,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:31:56,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2022-07-13 22:31:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983150843] [2022-07-13 22:31:56,915 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:31:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-07-13 22:31:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-07-13 22:31:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=5378, Unknown=69, NotChecked=0, Total=5700 [2022-07-13 22:31:56,917 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 72 states, 60 states have (on average 2.1) internal successors, (126), 56 states have internal predecessors, (126), 21 states have call successors, (30), 14 states have call predecessors, (30), 22 states have return successors, (29), 22 states have call predecessors, (29), 20 states have call successors, (29)