./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_find_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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:05:20,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:05:20,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:05:20,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:05:20,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:05:20,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:05:20,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:05:20,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:05:20,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:05:20,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:05:20,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:05:20,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:05:20,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:05:20,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:05:20,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:05:20,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:05:20,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:05:20,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:05:20,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:05:20,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:05:20,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:05:20,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:05:20,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:05:20,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:05:20,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:05:20,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:05:20,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:05:20,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:05:20,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:05:20,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:05:20,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:05:20,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:05:20,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:05:20,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:05:20,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:05:20,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:05:20,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:05:20,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:05:20,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:05:20,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:05:20,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:05:20,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:05:20,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:05:20,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:05:20,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:05:20,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:05:20,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:05:20,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:05:20,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:05:20,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:05:20,892 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:05:20,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:05:20,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:05:20,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:05:20,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:05:20,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:05:20,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:05:20,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:05:20,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:05:20,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:05:20,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:20,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:05:20,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:05:20,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:05:20,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:05:20,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:05:20,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:05:20,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-12-14 17:05:21,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:05:21,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:05:21,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:05:21,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:05:21,079 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:05:21,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-14 17:05:21,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63515ce02/44d711c336c947ec9fb6c13d59fcd421/FLAGb48a43f0d [2021-12-14 17:05:21,724 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:05:21,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-14 17:05:21,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63515ce02/44d711c336c947ec9fb6c13d59fcd421/FLAGb48a43f0d [2021-12-14 17:05:22,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63515ce02/44d711c336c947ec9fb6c13d59fcd421 [2021-12-14 17:05:22,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:05:22,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:05:22,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:22,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:05:22,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:05:22,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:22" (1/1) ... [2021-12-14 17:05:22,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c94514f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:22, skipping insertion in model container [2021-12-14 17:05:22,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:22" (1/1) ... [2021-12-14 17:05:22,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:05:22,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:22,413 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_hash_table_find_harness.i[4493,4506] [2021-12-14 17:05:22,418 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_hash_table_find_harness.i[4553,4566] [2021-12-14 17:05:22,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:22,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,234 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:23,238 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:23,240 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:23,240 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:23,242 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:23,242 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:23,243 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:23,243 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:23,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:23,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:23,380 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:23,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,629 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,629 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:23,699 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:05:23,716 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_hash_table_find_harness.i[4493,4506] [2021-12-14 17:05:23,717 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_hash_table_find_harness.i[4553,4566] [2021-12-14 17:05:23,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,759 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,759 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,777 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:23,777 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:23,778 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:23,778 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:23,778 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:23,779 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:23,779 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:23,779 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:23,780 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:23,780 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:23,797 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:23,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,876 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:23,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:24,032 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:05:24,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24 WrapperNode [2021-12-14 17:05:24,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:24,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:24,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:05:24,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:05:24,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,251 INFO L137 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 69, calls inlined = 20, statements flattened = 838 [2021-12-14 17:05:24,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:24,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:05:24,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:05:24,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:05:24,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:05:24,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:05:24,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:05:24,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:05:24,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (1/1) ... [2021-12-14 17:05:24,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:24,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:24,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:05:24,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:05:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 17:05:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:05:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:05:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:05:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:05:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:05:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-14 17:05:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-14 17:05:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:05:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:05:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:05:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:05:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:05:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:05:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:05:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:05:24,402 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:05:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:05:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-14 17:05:24,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-14 17:05:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:05:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:05:24,402 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:05:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-12-14 17:05:24,402 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-12-14 17:05:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:05:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-14 17:05:24,403 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-14 17:05:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-14 17:05:24,403 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-14 17:05:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-14 17:05:24,403 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-14 17:05:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:05:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-14 17:05:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-14 17:05:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-14 17:05:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-14 17:05:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-14 17:05:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-14 17:05:24,408 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:05:24,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:05:24,408 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-14 17:05:24,408 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-14 17:05:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:05:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:05:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:05:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-14 17:05:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-14 17:05:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-12-14 17:05:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-12-14 17:05:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:24,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:05:24,724 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:05:24,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:05:24,835 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-14 17:05:24,856 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:05:24,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-12-14 17:05:25,373 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:05:25,382 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:05:25,382 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-14 17:05:25,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:25 BoogieIcfgContainer [2021-12-14 17:05:25,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:05:25,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:05:25,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:05:25,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:05:25,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:05:22" (1/3) ... [2021-12-14 17:05:25,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d19d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:25, skipping insertion in model container [2021-12-14 17:05:25,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:24" (2/3) ... [2021-12-14 17:05:25,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d19d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:25, skipping insertion in model container [2021-12-14 17:05:25,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:25" (3/3) ... [2021-12-14 17:05:25,390 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-12-14 17:05:25,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:05:25,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:05:25,438 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:05:25,452 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:05:25,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:05:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-14 17:05:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-14 17:05:25,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:25,493 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:25,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2109277801, now seen corresponding path program 1 times [2021-12-14 17:05:25,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:25,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58065231] [2021-12-14 17:05:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:25,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:25,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:25,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:26,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:26,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58065231] [2021-12-14 17:05:26,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-14 17:05:26,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800924263] [2021-12-14 17:05:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:26,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:26,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:26,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:26,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:05:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:26,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:05:26,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-12-14 17:05:26,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800924263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:26,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:26,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:05:26,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999057160] [2021-12-14 17:05:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:26,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:05:26,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:26,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:05:26,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:05:26,796 INFO L87 Difference]: Start difference. First operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-14 17:05:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:26,854 INFO L93 Difference]: Finished difference Result 486 states and 686 transitions. [2021-12-14 17:05:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:05:26,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 182 [2021-12-14 17:05:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:26,866 INFO L225 Difference]: With dead ends: 486 [2021-12-14 17:05:26,866 INFO L226 Difference]: Without dead ends: 239 [2021-12-14 17:05:26,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:05:26,879 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:26,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-14 17:05:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-14 17:05:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.195945945945946) internal successors, (177), 149 states have internal predecessors, (177), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-14 17:05:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2021-12-14 17:05:26,937 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 182 [2021-12-14 17:05:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:26,938 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2021-12-14 17:05:26,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-14 17:05:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2021-12-14 17:05:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-14 17:05:26,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:26,941 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:26,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:27,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-14 17:05:27,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:27,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1716640621, now seen corresponding path program 1 times [2021-12-14 17:05:27,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442198974] [2021-12-14 17:05:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:27,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:27,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914988493] [2021-12-14 17:05:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:27,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:27,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:27,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:27,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:05:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:05:27,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-14 17:05:27,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:27,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:27,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442198974] [2021-12-14 17:05:27,949 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:27,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914988493] [2021-12-14 17:05:27,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914988493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:27,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:27,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:05:27,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546568132] [2021-12-14 17:05:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:27,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:05:27,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:05:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:27,952 INFO L87 Difference]: Start difference. First operand 239 states and 312 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-14 17:05:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:28,133 INFO L93 Difference]: Finished difference Result 464 states and 608 transitions. [2021-12-14 17:05:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:05:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2021-12-14 17:05:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:28,140 INFO L225 Difference]: With dead ends: 464 [2021-12-14 17:05:28,140 INFO L226 Difference]: Without dead ends: 246 [2021-12-14 17:05:28,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:05:28,142 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 325 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:28,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1041 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:28,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-14 17:05:28,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-14 17:05:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.196078431372549) internal successors, (183), 155 states have internal predecessors, (183), 69 states have call successors, (69), 22 states have call predecessors, (69), 23 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2021-12-14 17:05:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 322 transitions. [2021-12-14 17:05:28,176 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 322 transitions. Word has length 182 [2021-12-14 17:05:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:28,176 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 322 transitions. [2021-12-14 17:05:28,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-14 17:05:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 322 transitions. [2021-12-14 17:05:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-14 17:05:28,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:28,184 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:28,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:28,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-14 17:05:28,404 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 421077933, now seen corresponding path program 1 times [2021-12-14 17:05:28,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:28,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515368086] [2021-12-14 17:05:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:28,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:28,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:28,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729015738] [2021-12-14 17:05:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:28,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:28,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:28,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:28,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:05:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:28,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:05:28,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-14 17:05:29,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:29,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515368086] [2021-12-14 17:05:29,222 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729015738] [2021-12-14 17:05:29,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729015738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:29,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:29,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:05:29,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65030744] [2021-12-14 17:05:29,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:29,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:05:29,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:05:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:05:29,224 INFO L87 Difference]: Start difference. First operand 246 states and 322 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-14 17:05:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:29,458 INFO L93 Difference]: Finished difference Result 404 states and 531 transitions. [2021-12-14 17:05:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:05:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 182 [2021-12-14 17:05:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:29,460 INFO L225 Difference]: With dead ends: 404 [2021-12-14 17:05:29,460 INFO L226 Difference]: Without dead ends: 239 [2021-12-14 17:05:29,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:29,461 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 321 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:29,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1528 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:05:29,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-14 17:05:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-14 17:05:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.1891891891891893) internal successors, (176), 149 states have internal predecessors, (176), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-14 17:05:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 311 transitions. [2021-12-14 17:05:29,471 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 311 transitions. Word has length 182 [2021-12-14 17:05:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:29,472 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 311 transitions. [2021-12-14 17:05:29,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-14 17:05:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 311 transitions. [2021-12-14 17:05:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-14 17:05:29,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:29,474 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:29,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:29,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:29,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash -238453589, now seen corresponding path program 1 times [2021-12-14 17:05:29,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:29,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570482434] [2021-12-14 17:05:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:29,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:29,737 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:29,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891874423] [2021-12-14 17:05:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:29,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:29,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:29,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:29,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:05:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:05:30,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-14 17:05:30,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:30,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:30,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570482434] [2021-12-14 17:05:30,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:30,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891874423] [2021-12-14 17:05:30,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891874423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:30,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:30,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:30,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596264380] [2021-12-14 17:05:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:30,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:30,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:30,423 INFO L87 Difference]: Start difference. First operand 239 states and 311 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:05:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:30,455 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2021-12-14 17:05:30,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:30,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 182 [2021-12-14 17:05:30,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:30,459 INFO L225 Difference]: With dead ends: 474 [2021-12-14 17:05:30,459 INFO L226 Difference]: Without dead ends: 244 [2021-12-14 17:05:30,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:30,462 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 2 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:30,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1228 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-14 17:05:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-12-14 17:05:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1842105263157894) internal successors, (180), 153 states have internal predecessors, (180), 68 states have call successors, (68), 22 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-12-14 17:05:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2021-12-14 17:05:30,471 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 182 [2021-12-14 17:05:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:30,472 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2021-12-14 17:05:30,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:05:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2021-12-14 17:05:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-14 17:05:30,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:30,474 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:30,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:30,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:30,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash -168770197, now seen corresponding path program 1 times [2021-12-14 17:05:30,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:30,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060509145] [2021-12-14 17:05:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:30,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:05:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:05:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:05:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:05:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:05:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:05:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 17:05:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:05:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 17:05:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-14 17:05:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-14 17:05:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 17:05:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:05:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-12-14 17:05:31,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:31,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060509145] [2021-12-14 17:05:31,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060509145] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:31,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768924728] [2021-12-14 17:05:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:31,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:31,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:31,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:31,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:05:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-14 17:05:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:31,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:05:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-14 17:05:32,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:32,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768924728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:32,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:32,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2021-12-14 17:05:32,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668210087] [2021-12-14 17:05:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:32,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:05:32,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:05:32,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-14 17:05:32,232 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-14 17:05:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:32,306 INFO L93 Difference]: Finished difference Result 474 states and 611 transitions. [2021-12-14 17:05:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:05:32,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 194 [2021-12-14 17:05:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:32,308 INFO L225 Difference]: With dead ends: 474 [2021-12-14 17:05:32,308 INFO L226 Difference]: Without dead ends: 248 [2021-12-14 17:05:32,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:05:32,309 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 35 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:32,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1679 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 75 Unchecked, 0.0s Time] [2021-12-14 17:05:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-14 17:05:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-12-14 17:05:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-12-14 17:05:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 320 transitions. [2021-12-14 17:05:32,317 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 320 transitions. Word has length 194 [2021-12-14 17:05:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:32,318 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 320 transitions. [2021-12-14 17:05:32,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-14 17:05:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 320 transitions. [2021-12-14 17:05:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-14 17:05:32,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:32,320 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:32,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:32,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:32,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1760895517, now seen corresponding path program 1 times [2021-12-14 17:05:32,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:32,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373317] [2021-12-14 17:05:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:32,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:05:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:05:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:05:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:05:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 17:05:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:05:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:05:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:05:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-14 17:05:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-14 17:05:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 17:05:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-14 17:05:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:05:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-14 17:05:32,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373317] [2021-12-14 17:05:32,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373317] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297571279] [2021-12-14 17:05:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:32,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:32,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:32,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:05:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:33,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-14 17:05:33,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:34,364 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-14 17:05:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-14 17:05:40,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:40,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297571279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:40,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:40,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-14 17:05:40,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959629480] [2021-12-14 17:05:40,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:40,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:05:40,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:05:40,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2021-12-14 17:05:40,231 INFO L87 Difference]: Start difference. First operand 248 states and 320 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-14 17:05:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:40,379 INFO L93 Difference]: Finished difference Result 476 states and 619 transitions. [2021-12-14 17:05:40,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:05:40,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 200 [2021-12-14 17:05:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:40,380 INFO L225 Difference]: With dead ends: 476 [2021-12-14 17:05:40,380 INFO L226 Difference]: Without dead ends: 251 [2021-12-14 17:05:40,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2021-12-14 17:05:40,382 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:40,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1668 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 429 Unchecked, 0.1s Time] [2021-12-14 17:05:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-14 17:05:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2021-12-14 17:05:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 157 states have internal predecessors, (186), 68 states have call successors, (68), 24 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-12-14 17:05:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 322 transitions. [2021-12-14 17:05:40,389 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 322 transitions. Word has length 200 [2021-12-14 17:05:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:40,390 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 322 transitions. [2021-12-14 17:05:40,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-14 17:05:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 322 transitions. [2021-12-14 17:05:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-14 17:05:40,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:40,392 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:40,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:40,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:40,607 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:40,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -661330404, now seen corresponding path program 1 times [2021-12-14 17:05:40,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:40,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356402374] [2021-12-14 17:05:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:40,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:05:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:05:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:05:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:05:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-14 17:05:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:05:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-14 17:05:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-12-14 17:05:41,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:41,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356402374] [2021-12-14 17:05:41,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356402374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:41,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:41,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:05:41,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798464171] [2021-12-14 17:05:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:41,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:05:41,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:05:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:05:41,059 INFO L87 Difference]: Start difference. First operand 250 states and 322 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-14 17:05:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:41,746 INFO L93 Difference]: Finished difference Result 408 states and 531 transitions. [2021-12-14 17:05:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:05:41,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 205 [2021-12-14 17:05:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:41,748 INFO L225 Difference]: With dead ends: 408 [2021-12-14 17:05:41,749 INFO L226 Difference]: Without dead ends: 262 [2021-12-14 17:05:41,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:05:41,750 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 332 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:41,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 888 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:05:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-14 17:05:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2021-12-14 17:05:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 159 states have internal predecessors, (187), 68 states have call successors, (68), 24 states have call predecessors, (68), 24 states have return successors, (70), 68 states have call predecessors, (70), 67 states have call successors, (70) [2021-12-14 17:05:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 325 transitions. [2021-12-14 17:05:41,760 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 325 transitions. Word has length 205 [2021-12-14 17:05:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:41,760 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 325 transitions. [2021-12-14 17:05:41,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-14 17:05:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 325 transitions. [2021-12-14 17:05:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-14 17:05:41,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:41,762 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:41,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:05:41,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1796534111, now seen corresponding path program 1 times [2021-12-14 17:05:41,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:41,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935251503] [2021-12-14 17:05:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:41,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:05:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:05:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:05:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:05:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-14 17:05:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:05:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 17:05:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-12-14 17:05:42,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:42,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935251503] [2021-12-14 17:05:42,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935251503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:42,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:42,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-14 17:05:42,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714326287] [2021-12-14 17:05:42,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:42,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 17:05:42,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 17:05:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:05:42,339 INFO L87 Difference]: Start difference. First operand 252 states and 325 transitions. Second operand has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-14 17:05:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:43,790 INFO L93 Difference]: Finished difference Result 424 states and 554 transitions. [2021-12-14 17:05:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 17:05:43,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 210 [2021-12-14 17:05:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:43,795 INFO L225 Difference]: With dead ends: 424 [2021-12-14 17:05:43,795 INFO L226 Difference]: Without dead ends: 269 [2021-12-14 17:05:43,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-12-14 17:05:43,796 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 372 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:43,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1580 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:05:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-14 17:05:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 255. [2021-12-14 17:05:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 162 states have internal predecessors, (189), 68 states have call successors, (68), 24 states have call predecessors, (68), 25 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-14 17:05:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 330 transitions. [2021-12-14 17:05:43,811 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 330 transitions. Word has length 210 [2021-12-14 17:05:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:43,812 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 330 transitions. [2021-12-14 17:05:43,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-14 17:05:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 330 transitions. [2021-12-14 17:05:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-14 17:05:43,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:43,817 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:43,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:05:43,817 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash -130056786, now seen corresponding path program 2 times [2021-12-14 17:05:43,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:43,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507436832] [2021-12-14 17:05:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:43,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:43,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:05:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:05:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:05:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-14 17:05:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:05:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-14 17:05:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-14 17:05:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-14 17:05:44,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:44,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507436832] [2021-12-14 17:05:44,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507436832] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:44,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864802872] [2021-12-14 17:05:44,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:05:44,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:44,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:44,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:44,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:05:44,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 17:05:44,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:05:44,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-14 17:05:44,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-14 17:05:45,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:45,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864802872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:45,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:45,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-12-14 17:05:45,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551022383] [2021-12-14 17:05:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:45,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:45,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:05:45,066 INFO L87 Difference]: Start difference. First operand 255 states and 330 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-14 17:05:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:45,098 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2021-12-14 17:05:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:45,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 221 [2021-12-14 17:05:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:45,105 INFO L225 Difference]: With dead ends: 263 [2021-12-14 17:05:45,105 INFO L226 Difference]: Without dead ends: 261 [2021-12-14 17:05:45,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:05:45,107 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 12 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:45,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1217 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-14 17:05:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2021-12-14 17:05:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 164 states have (on average 1.170731707317073) internal successors, (192), 165 states have internal predecessors, (192), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-14 17:05:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 333 transitions. [2021-12-14 17:05:45,119 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 333 transitions. Word has length 221 [2021-12-14 17:05:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:45,120 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 333 transitions. [2021-12-14 17:05:45,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-14 17:05:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 333 transitions. [2021-12-14 17:05:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-14 17:05:45,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:45,122 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:45,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:45,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:45,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1053277728, now seen corresponding path program 1 times [2021-12-14 17:05:45,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:45,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887607470] [2021-12-14 17:05:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:45,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:05:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:05:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:05:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-14 17:05:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:05:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-14 17:05:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-14 17:05:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-14 17:05:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-14 17:05:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-14 17:05:45,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:45,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887607470] [2021-12-14 17:05:45,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887607470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:45,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640655102] [2021-12-14 17:05:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:45,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:45,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:45,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:45,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:05:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:46,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:05:46,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-14 17:05:46,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:05:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-14 17:05:47,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640655102] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:47,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:05:47,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 8] total 24 [2021-12-14 17:05:47,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959124797] [2021-12-14 17:05:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:47,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:47,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:05:47,263 INFO L87 Difference]: Start difference. First operand 259 states and 333 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2021-12-14 17:05:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:47,308 INFO L93 Difference]: Finished difference Result 267 states and 340 transitions. [2021-12-14 17:05:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:05:47,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 234 [2021-12-14 17:05:47,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:47,311 INFO L225 Difference]: With dead ends: 267 [2021-12-14 17:05:47,311 INFO L226 Difference]: Without dead ends: 265 [2021-12-14 17:05:47,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-12-14 17:05:47,312 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:47,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1224 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:47,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-12-14 17:05:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2021-12-14 17:05:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 168 states have internal predecessors, (195), 68 states have call successors, (68), 26 states have call predecessors, (68), 27 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-14 17:05:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 336 transitions. [2021-12-14 17:05:47,327 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 336 transitions. Word has length 234 [2021-12-14 17:05:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:47,328 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 336 transitions. [2021-12-14 17:05:47,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2021-12-14 17:05:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 336 transitions. [2021-12-14 17:05:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-14 17:05:47,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:47,329 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:47,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:47,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 17:05:47,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2025730660, now seen corresponding path program 1 times [2021-12-14 17:05:47,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:47,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704876203] [2021-12-14 17:05:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:47,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:05:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:05:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:05:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-14 17:05:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:05:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-14 17:05:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:05:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-14 17:05:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-14 17:05:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-14 17:05:48,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:48,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704876203] [2021-12-14 17:05:48,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704876203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:48,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103895396] [2021-12-14 17:05:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:48,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:48,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:48,072 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:48,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:05:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 17:05:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-14 17:05:48,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:48,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103895396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:48,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:48,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-12-14 17:05:48,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958553580] [2021-12-14 17:05:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:48,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:48,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:05:48,879 INFO L87 Difference]: Start difference. First operand 263 states and 336 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-14 17:05:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:48,895 INFO L93 Difference]: Finished difference Result 345 states and 437 transitions. [2021-12-14 17:05:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 241 [2021-12-14 17:05:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:48,897 INFO L225 Difference]: With dead ends: 345 [2021-12-14 17:05:48,897 INFO L226 Difference]: Without dead ends: 272 [2021-12-14 17:05:48,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:05:48,898 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 3 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:48,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1242 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:48,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-14 17:05:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2021-12-14 17:05:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (74), 69 states have call predecessors, (74), 67 states have call successors, (74) [2021-12-14 17:05:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 340 transitions. [2021-12-14 17:05:48,906 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 340 transitions. Word has length 241 [2021-12-14 17:05:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:48,907 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 340 transitions. [2021-12-14 17:05:48,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-14 17:05:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 340 transitions. [2021-12-14 17:05:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-14 17:05:48,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:48,909 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:48,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:49,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:49,123 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1682430622, now seen corresponding path program 1 times [2021-12-14 17:05:49,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:49,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993920780] [2021-12-14 17:05:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:49,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:05:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:05:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:05:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-14 17:05:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-14 17:05:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-14 17:05:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:05:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-14 17:05:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-14 17:05:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-14 17:05:49,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:49,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993920780] [2021-12-14 17:05:49,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993920780] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:49,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504303494] [2021-12-14 17:05:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:49,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:49,727 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:49,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 17:05:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 17:05:50,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-14 17:05:50,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:50,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504303494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:50,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:50,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2021-12-14 17:05:50,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799728642] [2021-12-14 17:05:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:50,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:05:50,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:05:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:05:50,584 INFO L87 Difference]: Start difference. First operand 267 states and 340 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-14 17:05:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:50,694 INFO L93 Difference]: Finished difference Result 443 states and 567 transitions. [2021-12-14 17:05:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:05:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 241 [2021-12-14 17:05:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:50,696 INFO L225 Difference]: With dead ends: 443 [2021-12-14 17:05:50,696 INFO L226 Difference]: Without dead ends: 267 [2021-12-14 17:05:50,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:05:50,697 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:50,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1701 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-14 17:05:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-14 17:05:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (73), 69 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-14 17:05:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2021-12-14 17:05:50,706 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 241 [2021-12-14 17:05:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:50,706 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2021-12-14 17:05:50,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-14 17:05:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2021-12-14 17:05:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-12-14 17:05:50,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:50,707 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:50,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-14 17:05:50,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-14 17:05:50,923 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash 762116007, now seen corresponding path program 2 times [2021-12-14 17:05:50,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695149244] [2021-12-14 17:05:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:50,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:05:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:05:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 17:05:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:05:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-14 17:05:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 17:05:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-14 17:05:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 17:05:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-14 17:05:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:05:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-14 17:05:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-14 17:05:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2021-12-14 17:05:52,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695149244] [2021-12-14 17:05:52,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695149244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689721563] [2021-12-14 17:05:52,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:05:52,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:52,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:52,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 17:05:53,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:05:53,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:05:53,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 3022 conjuncts, 213 conjunts are in the unsatisfiable core [2021-12-14 17:05:53,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:53,242 INFO L388 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 [2021-12-14 17:05:53,840 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-14 17:05:53,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-14 17:05:53,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-14 17:05:54,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-14 17:05:54,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 284097 column 44: unknown constant v_hash_table_state_required_bytes_~#elemsize~0.base_19 [2021-12-14 17:05:54,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:54,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-12-14 17:05:54,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051451430] [2021-12-14 17:05:54,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 17:05:54,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-14 17:05:54,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-14 17:05:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2021-12-14 17:05:54,172 INFO L87 Difference]: Start difference. First operand 267 states and 339 transitions. Second operand has 38 states, 33 states have (on average 2.909090909090909) internal successors, (96), 32 states have internal predecessors, (96), 18 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (36), 17 states have call predecessors, (36), 17 states have call successors, (36) [2021-12-14 17:05:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:05:54,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2021-12-14 17:05:54,173 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:54,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:54,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-14 17:05:54,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 17:05:54,375 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@661c502c at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-14 17:05:54,379 INFO L158 Benchmark]: Toolchain (without parser) took 32224.60ms. Allocated memory was 83.9MB in the beginning and 459.3MB in the end (delta: 375.4MB). Free memory was 43.2MB in the beginning and 324.6MB in the end (delta: -281.4MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2021-12-14 17:05:54,379 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:05:54,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1876.30ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 43.0MB in the beginning and 40.8MB in the end (delta: 2.2MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2021-12-14 17:05:54,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 218.99ms. Allocated memory is still 123.7MB. Free memory was 40.8MB in the beginning and 62.6MB in the end (delta: -21.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 17:05:54,380 INFO L158 Benchmark]: Boogie Preprocessor took 85.57ms. Allocated memory is still 123.7MB. Free memory was 62.6MB in the beginning and 54.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 17:05:54,380 INFO L158 Benchmark]: RCFGBuilder took 1044.77ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 54.9MB in the beginning and 63.8MB in the end (delta: -9.0MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2021-12-14 17:05:54,380 INFO L158 Benchmark]: TraceAbstraction took 28993.12ms. Allocated memory was 148.9MB in the beginning and 459.3MB in the end (delta: 310.4MB). Free memory was 62.8MB in the beginning and 324.6MB in the end (delta: -261.9MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2021-12-14 17:05:54,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1876.30ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 43.0MB in the beginning and 40.8MB in the end (delta: 2.2MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 218.99ms. Allocated memory is still 123.7MB. Free memory was 40.8MB in the beginning and 62.6MB in the end (delta: -21.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.57ms. Allocated memory is still 123.7MB. Free memory was 62.6MB in the beginning and 54.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1044.77ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 54.9MB in the beginning and 63.8MB in the end (delta: -9.0MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * TraceAbstraction took 28993.12ms. Allocated memory was 148.9MB in the beginning and 459.3MB in the end (delta: 310.4MB). Free memory was 62.8MB in the beginning and 324.6MB in the end (delta: -261.9MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@661c502c de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@661c502c: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-14 17:05:54,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 1 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:05:56,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:05:56,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:05:56,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:05:56,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:05:56,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:05:56,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:05:56,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:05:56,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:05:56,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:05:56,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:05:56,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:05:56,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:05:56,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:05:56,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:05:56,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:05:56,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:05:56,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:05:56,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:05:56,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:05:56,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:05:56,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:05:56,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:05:56,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:05:56,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:05:56,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:05:56,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:05:56,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:05:56,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:05:56,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:05:56,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:05:56,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:05:56,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:05:56,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:05:56,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:05:56,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:05:56,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:05:56,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:05:56,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:05:56,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:05:56,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:05:56,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-14 17:05:56,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:05:56,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:05:56,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:05:56,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:05:56,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:05:56,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:05:56,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:05:56,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:05:56,099 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:05:56,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:05:56,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:05:56,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:05:56,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:05:56,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:05:56,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:05:56,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:56,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:05:56,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:05:56,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 17:05:56,102 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-12-14 17:05:56,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:05:56,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:05:56,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:05:56,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:05:56,367 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:05:56,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-14 17:05:56,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2173f8e21/1523bf7d61bc4de0a3ec8d9335ee3af9/FLAG5a167a8f7 [2021-12-14 17:05:56,983 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:05:56,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-14 17:05:57,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2173f8e21/1523bf7d61bc4de0a3ec8d9335ee3af9/FLAG5a167a8f7 [2021-12-14 17:05:57,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2173f8e21/1523bf7d61bc4de0a3ec8d9335ee3af9 [2021-12-14 17:05:57,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:05:57,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:05:57,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:57,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:05:57,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:05:57,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:57" (1/1) ... [2021-12-14 17:05:57,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9c8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:57, skipping insertion in model container [2021-12-14 17:05:57,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:57" (1/1) ... [2021-12-14 17:05:57,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:05:57,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:57,467 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_hash_table_find_harness.i[4493,4506] [2021-12-14 17:05:57,472 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_hash_table_find_harness.i[4553,4566] [2021-12-14 17:05:58,045 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,319 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:58,320 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:58,320 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:58,321 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:58,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:58,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:58,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:58,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:58,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:58,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:58,439 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:58,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,678 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:58,801 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 17:05:58,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:58,864 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_hash_table_find_harness.i[4493,4506] [2021-12-14 17:05:58,864 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_hash_table_find_harness.i[4553,4566] [2021-12-14 17:05:58,897 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,908 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,908 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:58,937 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:58,938 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:58,938 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:58,939 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:58,940 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:58,940 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:58,942 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:58,942 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:58,942 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:58,942 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:58,956 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:59,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,057 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:59,096 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:05:59,127 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_hash_table_find_harness.i[4493,4506] [2021-12-14 17:05:59,128 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_hash_table_find_harness.i[4553,4566] [2021-12-14 17:05:59,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,192 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:59,192 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:59,193 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:59,193 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:59,194 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:59,194 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:59,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:59,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:59,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:59,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:59,208 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:59,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,290 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,291 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,297 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,297 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:59,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:59,534 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:05:59,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59 WrapperNode [2021-12-14 17:05:59,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:59,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:59,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:05:59,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:05:59,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,688 INFO L137 Inliner]: procedures = 794, calls = 2455, calls flagged for inlining = 71, calls inlined = 19, statements flattened = 824 [2021-12-14 17:05:59,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:59,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:05:59,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:05:59,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:05:59,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:05:59,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:05:59,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:05:59,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:05:59,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (1/1) ... [2021-12-14 17:05:59,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:59,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:05:59,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:05:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-14 17:05:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:05:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:05:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:05:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:05:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-14 17:05:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-14 17:05:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:05:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:05:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:05:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:05:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:05:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:05:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-14 17:05:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:05:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:05:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-12-14 17:05:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-12-14 17:05:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-14 17:05:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-14 17:05:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-14 17:05:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-14 17:05:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-14 17:05:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-14 17:05:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-14 17:05:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-14 17:05:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-14 17:05:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-14 17:05:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-14 17:05:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-14 17:05:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:05:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:05:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-14 17:05:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-14 17:05:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-14 17:05:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-14 17:05:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:05:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:05:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:05:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-14 17:05:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-14 17:05:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-12-14 17:05:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-12-14 17:06:00,186 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:06:00,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:06:00,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-14 17:06:00,429 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-14 17:06:00,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-12-14 17:06:01,565 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:06:01,577 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:06:01,577 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-14 17:06:01,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:06:01 BoogieIcfgContainer [2021-12-14 17:06:01,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:06:01,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:06:01,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:06:01,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:06:01,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:05:57" (1/3) ... [2021-12-14 17:06:01,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b74a939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:06:01, skipping insertion in model container [2021-12-14 17:06:01,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:59" (2/3) ... [2021-12-14 17:06:01,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b74a939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:06:01, skipping insertion in model container [2021-12-14 17:06:01,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:06:01" (3/3) ... [2021-12-14 17:06:01,583 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-12-14 17:06:01,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:06:01,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:06:01,635 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:06:01,639 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:06:01,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:06:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-14 17:06:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 17:06:01,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:01,669 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:01,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash -501442740, now seen corresponding path program 1 times [2021-12-14 17:06:01,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:01,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100789892] [2021-12-14 17:06:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:01,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:01,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:01,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:01,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 17:06:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:02,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:06:02,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-14 17:06:02,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:02,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:02,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100789892] [2021-12-14 17:06:02,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100789892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:02,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:02,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:06:02,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100345076] [2021-12-14 17:06:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:06:02,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:02,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:06:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:06:02,786 INFO L87 Difference]: Start difference. First operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:06:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:02,844 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2021-12-14 17:06:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:06:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-12-14 17:06:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:02,858 INFO L225 Difference]: With dead ends: 456 [2021-12-14 17:06:02,858 INFO L226 Difference]: Without dead ends: 224 [2021-12-14 17:06:02,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:06:02,868 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:02,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:06:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-14 17:06:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-12-14 17:06:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 138 states have internal predecessors, (165), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-14 17:06:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions. [2021-12-14 17:06:02,923 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 178 [2021-12-14 17:06:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:02,924 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions. [2021-12-14 17:06:02,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:06:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions. [2021-12-14 17:06:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 17:06:02,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:02,935 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:02,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:03,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:03,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1965212336, now seen corresponding path program 1 times [2021-12-14 17:06:03,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:03,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548759194] [2021-12-14 17:06:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:03,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:03,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:03,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:03,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 17:06:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:03,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 17:06:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-14 17:06:04,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:04,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:04,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548759194] [2021-12-14 17:06:04,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548759194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:04,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:04,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:06:04,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805941763] [2021-12-14 17:06:04,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:04,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:06:04,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:06:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:06:04,208 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:06:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:04,262 INFO L93 Difference]: Finished difference Result 443 states and 581 transitions. [2021-12-14 17:06:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:06:04,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-12-14 17:06:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:04,264 INFO L225 Difference]: With dead ends: 443 [2021-12-14 17:06:04,264 INFO L226 Difference]: Without dead ends: 228 [2021-12-14 17:06:04,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:06:04,265 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:04,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:06:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-14 17:06:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-12-14 17:06:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 140 states have (on average 1.2) internal successors, (168), 141 states have internal predecessors, (168), 65 states have call successors, (65), 21 states have call predecessors, (65), 22 states have return successors, (65), 65 states have call predecessors, (65), 64 states have call successors, (65) [2021-12-14 17:06:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 298 transitions. [2021-12-14 17:06:04,278 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 298 transitions. Word has length 178 [2021-12-14 17:06:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:04,278 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 298 transitions. [2021-12-14 17:06:04,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:06:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 298 transitions. [2021-12-14 17:06:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 17:06:04,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:04,280 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:04,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:04,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:04,505 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1472595880, now seen corresponding path program 1 times [2021-12-14 17:06:04,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408751338] [2021-12-14 17:06:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:04,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:04,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:04,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:04,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 17:06:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:05,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:06:05,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-12-14 17:06:05,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:05,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:05,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408751338] [2021-12-14 17:06:05,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408751338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:05,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:05,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:06:05,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904563540] [2021-12-14 17:06:05,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:05,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:06:05,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:06:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:06:05,455 INFO L87 Difference]: Start difference. First operand 228 states and 298 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:06:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:05,645 INFO L93 Difference]: Finished difference Result 449 states and 585 transitions. [2021-12-14 17:06:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:06:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 190 [2021-12-14 17:06:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:05,649 INFO L225 Difference]: With dead ends: 449 [2021-12-14 17:06:05,649 INFO L226 Difference]: Without dead ends: 230 [2021-12-14 17:06:05,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:06:05,650 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:05,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:06:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-14 17:06:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-12-14 17:06:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 65 states have call successors, (65), 21 states have call predecessors, (65), 23 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-14 17:06:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 300 transitions. [2021-12-14 17:06:05,665 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 300 transitions. Word has length 190 [2021-12-14 17:06:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:05,665 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 300 transitions. [2021-12-14 17:06:05,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:06:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 300 transitions. [2021-12-14 17:06:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-14 17:06:05,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:05,667 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:05,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:05,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:05,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash 10564960, now seen corresponding path program 1 times [2021-12-14 17:06:05,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262077505] [2021-12-14 17:06:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:05,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:05,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:05,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 17:06:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:06,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:06:06,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-14 17:06:07,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:07,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262077505] [2021-12-14 17:06:07,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262077505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:07,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:07,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:06:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425772697] [2021-12-14 17:06:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:07,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:06:07,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:06:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:06:07,034 INFO L87 Difference]: Start difference. First operand 230 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-14 17:06:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:07,159 INFO L93 Difference]: Finished difference Result 447 states and 585 transitions. [2021-12-14 17:06:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:06:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 195 [2021-12-14 17:06:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:07,164 INFO L225 Difference]: With dead ends: 447 [2021-12-14 17:06:07,164 INFO L226 Difference]: Without dead ends: 237 [2021-12-14 17:06:07,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:06:07,165 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 36 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:07,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 801 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:06:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-14 17:06:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-12-14 17:06:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 149 states have internal predecessors, (175), 66 states have call successors, (66), 21 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-14 17:06:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2021-12-14 17:06:07,178 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 195 [2021-12-14 17:06:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:07,178 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2021-12-14 17:06:07,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-14 17:06:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2021-12-14 17:06:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-14 17:06:07,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:07,181 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:07,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:07,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:07,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash 11341472, now seen corresponding path program 1 times [2021-12-14 17:06:07,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298494810] [2021-12-14 17:06:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:07,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:07,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:07,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 17:06:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:08,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:06:08,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:08,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:06:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-14 17:06:09,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:09,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:09,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298494810] [2021-12-14 17:06:09,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298494810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:09,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:09,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:06:09,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670230963] [2021-12-14 17:06:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:09,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:06:09,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:06:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:06:09,043 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-14 17:06:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:10,025 INFO L93 Difference]: Finished difference Result 466 states and 606 transitions. [2021-12-14 17:06:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:06:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 195 [2021-12-14 17:06:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:10,030 INFO L225 Difference]: With dead ends: 466 [2021-12-14 17:06:10,030 INFO L226 Difference]: Without dead ends: 241 [2021-12-14 17:06:10,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:06:10,031 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 38 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:10,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 2287 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 143 Unchecked, 0.9s Time] [2021-12-14 17:06:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-14 17:06:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-12-14 17:06:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 152 states have internal predecessors, (179), 66 states have call successors, (66), 22 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-14 17:06:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2021-12-14 17:06:10,040 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 195 [2021-12-14 17:06:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:10,041 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2021-12-14 17:06:10,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-14 17:06:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2021-12-14 17:06:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-14 17:06:10,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:10,043 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:10,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-14 17:06:10,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:10,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:10,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash -145875486, now seen corresponding path program 1 times [2021-12-14 17:06:10,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723228521] [2021-12-14 17:06:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:10,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:10,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:10,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 17:06:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:11,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:06:11,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:11,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 17:06:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-14 17:06:11,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:11,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:11,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723228521] [2021-12-14 17:06:11,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723228521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:11,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:11,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 17:06:11,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802113379] [2021-12-14 17:06:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:11,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 17:06:11,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 17:06:11,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:06:11,867 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-14 17:06:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:13,011 INFO L93 Difference]: Finished difference Result 467 states and 607 transitions. [2021-12-14 17:06:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:06:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 201 [2021-12-14 17:06:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:13,014 INFO L225 Difference]: With dead ends: 467 [2021-12-14 17:06:13,014 INFO L226 Difference]: Without dead ends: 244 [2021-12-14 17:06:13,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:06:13,015 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 36 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:13,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 2302 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 0 Unknown, 222 Unchecked, 1.1s Time] [2021-12-14 17:06:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-14 17:06:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-12-14 17:06:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1907894736842106) internal successors, (181), 154 states have internal predecessors, (181), 67 states have call successors, (67), 23 states have call predecessors, (67), 24 states have return successors, (70), 66 states have call predecessors, (70), 66 states have call successors, (70) [2021-12-14 17:06:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 318 transitions. [2021-12-14 17:06:13,024 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 318 transitions. Word has length 201 [2021-12-14 17:06:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:13,024 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 318 transitions. [2021-12-14 17:06:13,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-14 17:06:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 318 transitions. [2021-12-14 17:06:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-14 17:06:13,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:13,026 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:13,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:13,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:13,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1621013711, now seen corresponding path program 1 times [2021-12-14 17:06:13,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:13,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501661889] [2021-12-14 17:06:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:13,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:13,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:13,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 17:06:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:14,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:06:14,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-14 17:06:14,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:14,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:14,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501661889] [2021-12-14 17:06:14,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501661889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:14,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:14,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:06:14,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482121596] [2021-12-14 17:06:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:14,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:06:14,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:06:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:06:14,472 INFO L87 Difference]: Start difference. First operand 244 states and 318 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-14 17:06:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:14,664 INFO L93 Difference]: Finished difference Result 406 states and 536 transitions. [2021-12-14 17:06:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:06:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 206 [2021-12-14 17:06:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:14,667 INFO L225 Difference]: With dead ends: 406 [2021-12-14 17:06:14,667 INFO L226 Difference]: Without dead ends: 242 [2021-12-14 17:06:14,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:06:14,668 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:14,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:06:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-14 17:06:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2021-12-14 17:06:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 149 states have internal predecessors, (175), 67 states have call successors, (67), 23 states have call predecessors, (67), 22 states have return successors, (68), 65 states have call predecessors, (68), 66 states have call successors, (68) [2021-12-14 17:06:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 310 transitions. [2021-12-14 17:06:14,676 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 310 transitions. Word has length 206 [2021-12-14 17:06:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:14,676 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 310 transitions. [2021-12-14 17:06:14,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-14 17:06:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 310 transitions. [2021-12-14 17:06:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-14 17:06:14,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:14,678 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:14,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:14,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:14,891 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 500291049, now seen corresponding path program 1 times [2021-12-14 17:06:14,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:14,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108261436] [2021-12-14 17:06:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:14,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:14,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:14,894 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:14,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 17:06:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:16,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:06:16,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-14 17:06:16,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:16,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:16,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108261436] [2021-12-14 17:06:16,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108261436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:16,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:16,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:06:16,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026717654] [2021-12-14 17:06:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:16,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:06:16,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:06:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:06:16,291 INFO L87 Difference]: Start difference. First operand 238 states and 310 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:06:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:16,458 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2021-12-14 17:06:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:06:16,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 211 [2021-12-14 17:06:16,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:16,461 INFO L225 Difference]: With dead ends: 397 [2021-12-14 17:06:16,461 INFO L226 Difference]: Without dead ends: 244 [2021-12-14 17:06:16,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:06:16,462 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:16,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1587 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:06:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-14 17:06:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2021-12-14 17:06:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-12-14 17:06:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2021-12-14 17:06:16,470 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 211 [2021-12-14 17:06:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:16,471 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2021-12-14 17:06:16,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:06:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2021-12-14 17:06:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-14 17:06:16,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:16,472 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:16,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:16,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:16,695 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2127170151, now seen corresponding path program 2 times [2021-12-14 17:06:16,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:16,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305216884] [2021-12-14 17:06:16,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:06:16,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:16,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:16,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:16,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-14 17:06:17,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 17:06:17,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:06:17,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:06:17,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-12-14 17:06:17,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:06:17,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:06:17,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305216884] [2021-12-14 17:06:17,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305216884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:06:17,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:06:17,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:06:17,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734264505] [2021-12-14 17:06:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:06:17,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:06:17,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:06:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:06:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:06:17,394 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-12-14 17:06:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:17,428 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2021-12-14 17:06:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:06:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 217 [2021-12-14 17:06:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:17,429 INFO L225 Difference]: With dead ends: 249 [2021-12-14 17:06:17,429 INFO L226 Difference]: Without dead ends: 247 [2021-12-14 17:06:17,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:06:17,430 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 12 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:17,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1143 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:06:17,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-14 17:06:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2021-12-14 17:06:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 155 states have internal predecessors, (180), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-12-14 17:06:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 318 transitions. [2021-12-14 17:06:17,438 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 318 transitions. Word has length 217 [2021-12-14 17:06:17,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:17,439 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 318 transitions. [2021-12-14 17:06:17,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-12-14 17:06:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 318 transitions. [2021-12-14 17:06:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-14 17:06:17,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:17,440 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:17,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:17,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:06:17,656 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash 533171121, now seen corresponding path program 1 times [2021-12-14 17:06:17,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:06:17,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387456779] [2021-12-14 17:06:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:17,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:06:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:06:17,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:06:17,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process