./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_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 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:59:51,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:59:51,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:59:51,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:59:51,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:59:51,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:59:51,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:59:51,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:59:51,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:59:51,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:59:51,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:59:51,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:59:51,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:59:51,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:59:51,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:59:51,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:59:51,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:59:51,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:59:51,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:59:51,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:59:51,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:59:51,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:59:51,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:59:51,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:59:51,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:59:51,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:59:51,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:59:51,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:59:51,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:59:51,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:59:51,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:59:51,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:59:51,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:59:51,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:59:51,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:59:51,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:59:51,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:59:51,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:59:51,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:59:51,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:59:51,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:59:51,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:59:51,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:59:51,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:59:51,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:59:51,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:59:51,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:59:51,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:59:51,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:59:51,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:59:51,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:59:51,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:59:51,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:59:51,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:59:51,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:59:51,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-05 12:59:52,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:59:52,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:59:52,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:59:52,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:59:52,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:59:52,203 INFO L432 ainManager$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 [2021-11-05 12:59:52,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf6bc526/1adbbe9643304d7f9a183f1769f738c8/FLAG49e2ae7c3 [2021-11-05 12:59:52,831 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:59:52,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-05 12:59:52,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf6bc526/1adbbe9643304d7f9a183f1769f738c8/FLAG49e2ae7c3 [2021-11-05 12:59:53,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf6bc526/1adbbe9643304d7f9a183f1769f738c8 [2021-11-05 12:59:53,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:59:53,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:59:53,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:59:53,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:59:53,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:59:53,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:59:53" (1/1) ... [2021-11-05 12:59:53,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47de4461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:53, skipping insertion in model container [2021-11-05 12:59:53,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:59:53" (1/1) ... [2021-11-05 12:59:53,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:59:53,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:59:53,605 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-05 12:59:53,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-05 12:59:53,629 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:59:53,633 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:59:54,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,221 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,221 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,233 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,445 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:59:54,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:59:54,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:59:54,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:59:54,450 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:59:54,450 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:59:54,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:59:54,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:59:54,452 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:59:54,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:59:54,577 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:59:54,757 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:59:54,825 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:59:54,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-05 12:59:54,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-05 12:59:54,840 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:59:54,841 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:59:54,873 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,874 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,885 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,885 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:54,930 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:59:54,931 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:59:54,931 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:59:54,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:59:54,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:59:54,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:59:54,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:59:54,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:59:54,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:59:54,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:59:54,950 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:59:55,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,103 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,104 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:59:55,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:59:55,390 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:59:55,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55 WrapperNode [2021-11-05 12:59:55,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:59:55,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:59:55,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:59:55,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:59:55,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:59:55,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:59:55,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:59:55,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:59:55,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:59:55,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:59:55,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:59:55,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:59:55,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (1/1) ... [2021-11-05 12:59:55,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:59:55,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:55,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 12:59:55,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 12:59:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 12:59:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:59:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:59:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:59:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:59:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:59:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 12:59:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:59:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 12:59:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:59:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:59:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:59:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:59:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:00:03,493 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !true; [2021-11-05 13:00:03,493 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !true; [2021-11-05 13:00:03,493 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##185: assume !true; [2021-11-05 13:00:03,493 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##132: assume !true; [2021-11-05 13:00:03,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:00:03,500 INFO L299 CfgBuilder]: Removed 289 assume(true) statements. [2021-11-05 13:00:03,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:00:03 BoogieIcfgContainer [2021-11-05 13:00:03,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:00:03,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:00:03,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:00:03,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:00:03,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:59:53" (1/3) ... [2021-11-05 13:00:03,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4d6b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:00:03, skipping insertion in model container [2021-11-05 13:00:03,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:59:55" (2/3) ... [2021-11-05 13:00:03,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4d6b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:00:03, skipping insertion in model container [2021-11-05 13:00:03,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:00:03" (3/3) ... [2021-11-05 13:00:03,508 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-05 13:00:03,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:00:03,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-05 13:00:03,540 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:00:03,545 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:00:03,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-05 13:00:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 285 states have (on average 1.4280701754385965) internal successors, (407), 303 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:00:03,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:03,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:03,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash -468143570, now seen corresponding path program 1 times [2021-11-05 13:00:03,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:03,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379742150] [2021-11-05 13:00:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:03,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:04,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:04,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379742150] [2021-11-05 13:00:04,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379742150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:04,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:04,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:00:04,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970191940] [2021-11-05 13:00:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:04,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:00:04,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:00:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:00:04,155 INFO L87 Difference]: Start difference. First operand has 304 states, 285 states have (on average 1.4280701754385965) internal successors, (407), 303 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:04,193 INFO L93 Difference]: Finished difference Result 603 states and 808 transitions. [2021-11-05 13:00:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:00:04,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 13:00:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:04,204 INFO L225 Difference]: With dead ends: 603 [2021-11-05 13:00:04,204 INFO L226 Difference]: Without dead ends: 297 [2021-11-05 13:00:04,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:00:04,213 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:04,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:00:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-05 13:00:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-11-05 13:00:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 279 states have (on average 1.2544802867383513) internal successors, (350), 296 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 350 transitions. [2021-11-05 13:00:04,256 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 350 transitions. Word has length 72 [2021-11-05 13:00:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:04,256 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 350 transitions. [2021-11-05 13:00:04,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 350 transitions. [2021-11-05 13:00:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:00:04,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:04,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:04,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:00:04,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1429628202, now seen corresponding path program 1 times [2021-11-05 13:00:04,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:04,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396312969] [2021-11-05 13:00:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:04,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:04,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:00:04,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009946347] [2021-11-05 13:00:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:04,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:00:04,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:00:04,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:00:04,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:00:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:05,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:00:05,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:00:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:05,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:00:05,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:05,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396312969] [2021-11-05 13:00:05,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:00:05,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009946347] [2021-11-05 13:00:05,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009946347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:05,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:05,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:00:05,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719419310] [2021-11-05 13:00:05,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:05,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:00:05,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:05,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:00:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:00:05,604 INFO L87 Difference]: Start difference. First operand 297 states and 350 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:05,867 INFO L93 Difference]: Finished difference Result 853 states and 1006 transitions. [2021-11-05 13:00:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:00:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 13:00:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:05,872 INFO L225 Difference]: With dead ends: 853 [2021-11-05 13:00:05,872 INFO L226 Difference]: Without dead ends: 578 [2021-11-05 13:00:05,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.78ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:00:05,879 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 652 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.03ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:05,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1981 Invalid, 39 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 136.03ms Time] [2021-11-05 13:00:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-05 13:00:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 303. [2021-11-05 13:00:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.249122807017544) internal successors, (356), 302 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 356 transitions. [2021-11-05 13:00:05,899 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 356 transitions. Word has length 72 [2021-11-05 13:00:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:05,899 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 356 transitions. [2021-11-05 13:00:05,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 356 transitions. [2021-11-05 13:00:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 13:00:05,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:05,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:05,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:00:06,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:00:06,125 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:06,126 INFO L85 PathProgramCache]: Analyzing trace with hash 874876930, now seen corresponding path program 1 times [2021-11-05 13:00:06,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:06,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582142598] [2021-11-05 13:00:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:06,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:06,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:06,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582142598] [2021-11-05 13:00:06,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582142598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:06,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:06,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:00:06,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93837509] [2021-11-05 13:00:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:06,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:00:06,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:00:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:00:06,692 INFO L87 Difference]: Start difference. First operand 303 states and 356 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:08,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:10,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:12,097 INFO L93 Difference]: Finished difference Result 574 states and 675 transitions. [2021-11-05 13:00:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:00:12,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-05 13:00:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:12,100 INFO L225 Difference]: With dead ends: 574 [2021-11-05 13:00:12,100 INFO L226 Difference]: Without dead ends: 309 [2021-11-05 13:00:12,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 500.10ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:00:12,102 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 405 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4655.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.77ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5029.52ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:12,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1548 Invalid, 187 Unknown, 0 Unchecked, 8.77ms Time], IncrementalHoareTripleChecker [9 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 5029.52ms Time] [2021-11-05 13:00:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-05 13:00:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2021-11-05 13:00:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 287 states have (on average 1.2473867595818815) internal successors, (358), 304 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 358 transitions. [2021-11-05 13:00:12,114 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 358 transitions. Word has length 76 [2021-11-05 13:00:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:12,115 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 358 transitions. [2021-11-05 13:00:12,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 358 transitions. [2021-11-05 13:00:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 13:00:12,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:12,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:12,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:00:12,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:12,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:12,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1750895936, now seen corresponding path program 1 times [2021-11-05 13:00:12,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:12,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470816460] [2021-11-05 13:00:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:12,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:12,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:12,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470816460] [2021-11-05 13:00:12,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470816460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:12,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:12,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:00:12,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516235545] [2021-11-05 13:00:12,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:12,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:00:12,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:00:12,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:00:12,420 INFO L87 Difference]: Start difference. First operand 305 states and 358 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:12,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:12,571 INFO L93 Difference]: Finished difference Result 573 states and 673 transitions. [2021-11-05 13:00:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:00:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-05 13:00:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:12,574 INFO L225 Difference]: With dead ends: 573 [2021-11-05 13:00:12,574 INFO L226 Difference]: Without dead ends: 303 [2021-11-05 13:00:12,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.10ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:00:12,575 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 317 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.44ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:12,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 655 Invalid, 42 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 135.44ms Time] [2021-11-05 13:00:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-05 13:00:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-05 13:00:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.231578947368421) internal successors, (351), 302 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 351 transitions. [2021-11-05 13:00:12,591 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 351 transitions. Word has length 76 [2021-11-05 13:00:12,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:12,591 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 351 transitions. [2021-11-05 13:00:12,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 351 transitions. [2021-11-05 13:00:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 13:00:12,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:12,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:12,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:00:12,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -136947257, now seen corresponding path program 1 times [2021-11-05 13:00:12,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:12,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325722557] [2021-11-05 13:00:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:12,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:12,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:12,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325722557] [2021-11-05 13:00:12,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325722557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:12,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:12,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:00:12,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660286477] [2021-11-05 13:00:12,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:12,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:00:12,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:00:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:00:12,959 INFO L87 Difference]: Start difference. First operand 303 states and 351 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:15,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:17,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:18,424 INFO L93 Difference]: Finished difference Result 759 states and 877 transitions. [2021-11-05 13:00:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:00:18,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-05 13:00:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:18,426 INFO L225 Difference]: With dead ends: 759 [2021-11-05 13:00:18,426 INFO L226 Difference]: Without dead ends: 493 [2021-11-05 13:00:18,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 277.60ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:00:18,428 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 329 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4845.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.14ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5237.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:18,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 1623 Invalid, 248 Unknown, 0 Unchecked, 6.14ms Time], IncrementalHoareTripleChecker [30 Valid, 216 Invalid, 2 Unknown, 0 Unchecked, 5237.26ms Time] [2021-11-05 13:00:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-05 13:00:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 303. [2021-11-05 13:00:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.2140350877192982) internal successors, (346), 302 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 346 transitions. [2021-11-05 13:00:18,440 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 346 transitions. Word has length 78 [2021-11-05 13:00:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:18,440 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 346 transitions. [2021-11-05 13:00:18,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 346 transitions. [2021-11-05 13:00:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:00:18,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:18,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:18,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:00:18,443 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -505310154, now seen corresponding path program 1 times [2021-11-05 13:00:18,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:18,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497161605] [2021-11-05 13:00:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:18,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:18,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:18,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497161605] [2021-11-05 13:00:18,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497161605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:18,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:18,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:00:18,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016212938] [2021-11-05 13:00:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:18,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:00:18,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:00:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:00:18,969 INFO L87 Difference]: Start difference. First operand 303 states and 346 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:19,390 INFO L93 Difference]: Finished difference Result 587 states and 675 transitions. [2021-11-05 13:00:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:00:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 13:00:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:19,392 INFO L225 Difference]: With dead ends: 587 [2021-11-05 13:00:19,392 INFO L226 Difference]: Without dead ends: 383 [2021-11-05 13:00:19,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:00:19,393 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 94 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 347.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.83ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:19,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1084 Invalid, 106 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 377.83ms Time] [2021-11-05 13:00:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-05 13:00:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 303. [2021-11-05 13:00:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.2035087719298245) internal successors, (343), 302 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 343 transitions. [2021-11-05 13:00:19,405 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 343 transitions. Word has length 79 [2021-11-05 13:00:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:19,406 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 343 transitions. [2021-11-05 13:00:19,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 343 transitions. [2021-11-05 13:00:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 13:00:19,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:19,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:00:19,408 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1214273725, now seen corresponding path program 1 times [2021-11-05 13:00:19,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:19,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578060884] [2021-11-05 13:00:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:19,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:20,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:20,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578060884] [2021-11-05 13:00:20,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578060884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:20,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:20,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:00:20,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747898628] [2021-11-05 13:00:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:20,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:00:20,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:00:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:00:20,066 INFO L87 Difference]: Start difference. First operand 303 states and 343 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:22,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:24,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:26,011 INFO L93 Difference]: Finished difference Result 702 states and 795 transitions. [2021-11-05 13:00:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:00:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-05 13:00:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:26,013 INFO L225 Difference]: With dead ends: 702 [2021-11-05 13:00:26,013 INFO L226 Difference]: Without dead ends: 494 [2021-11-05 13:00:26,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 715.72ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:00:26,014 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 647 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5037.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5365.99ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:26,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 1426 Invalid, 287 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [13 Valid, 272 Invalid, 2 Unknown, 0 Unchecked, 5365.99ms Time] [2021-11-05 13:00:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-05 13:00:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 303. [2021-11-05 13:00:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.2) internal successors, (342), 302 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 342 transitions. [2021-11-05 13:00:26,022 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 342 transitions. Word has length 80 [2021-11-05 13:00:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:26,022 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 342 transitions. [2021-11-05 13:00:26,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 342 transitions. [2021-11-05 13:00:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 13:00:26,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:26,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:26,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:00:26,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash -708297866, now seen corresponding path program 1 times [2021-11-05 13:00:26,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:26,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265028849] [2021-11-05 13:00:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:26,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:26,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:26,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265028849] [2021-11-05 13:00:26,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265028849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:26,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:26,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:00:26,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721647356] [2021-11-05 13:00:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:26,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:00:26,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:00:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:00:26,668 INFO L87 Difference]: Start difference. First operand 303 states and 342 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:28,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:30,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:33,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:35,004 INFO L93 Difference]: Finished difference Result 612 states and 693 transitions. [2021-11-05 13:00:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 13:00:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-05 13:00:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:35,007 INFO L225 Difference]: With dead ends: 612 [2021-11-05 13:00:35,007 INFO L226 Difference]: Without dead ends: 392 [2021-11-05 13:00:35,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 774.46ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:00:35,009 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 450 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7110.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7728.83ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:35,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1765 Invalid, 339 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [19 Valid, 317 Invalid, 3 Unknown, 0 Unchecked, 7728.83ms Time] [2021-11-05 13:00:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-05 13:00:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 303. [2021-11-05 13:00:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 285 states have (on average 1.1964912280701754) internal successors, (341), 302 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 341 transitions. [2021-11-05 13:00:35,018 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 341 transitions. Word has length 83 [2021-11-05 13:00:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:35,019 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 341 transitions. [2021-11-05 13:00:35,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 341 transitions. [2021-11-05 13:00:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 13:00:35,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:35,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:35,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:00:35,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2107435938, now seen corresponding path program 1 times [2021-11-05 13:00:35,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:35,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699547841] [2021-11-05 13:00:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:35,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:36,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:36,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699547841] [2021-11-05 13:00:36,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699547841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:36,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:36,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:00:36,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140565462] [2021-11-05 13:00:36,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:36,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:00:36,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:36,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:00:36,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:00:36,043 INFO L87 Difference]: Start difference. First operand 303 states and 341 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:36,278 INFO L93 Difference]: Finished difference Result 303 states and 341 transitions. [2021-11-05 13:00:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:00:36,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-05 13:00:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:36,280 INFO L225 Difference]: With dead ends: 303 [2021-11-05 13:00:36,280 INFO L226 Difference]: Without dead ends: 301 [2021-11-05 13:00:36,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:00:36,281 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 7 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.23ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:36,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 607 Invalid, 51 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 218.23ms Time] [2021-11-05 13:00:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-05 13:00:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2021-11-05 13:00:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 284 states have (on average 1.193661971830986) internal successors, (339), 300 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 339 transitions. [2021-11-05 13:00:36,292 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 339 transitions. Word has length 86 [2021-11-05 13:00:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:36,292 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 339 transitions. [2021-11-05 13:00:36,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 339 transitions. [2021-11-05 13:00:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 13:00:36,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:36,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:36,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:00:36,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1620676935, now seen corresponding path program 1 times [2021-11-05 13:00:36,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:36,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291412066] [2021-11-05 13:00:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:36,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:36,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:36,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291412066] [2021-11-05 13:00:36,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291412066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:36,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:36,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:00:36,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685764393] [2021-11-05 13:00:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:36,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:00:36,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:36,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:00:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:00:36,967 INFO L87 Difference]: Start difference. First operand 301 states and 339 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:37,487 INFO L93 Difference]: Finished difference Result 530 states and 610 transitions. [2021-11-05 13:00:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:00:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 13:00:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:37,489 INFO L225 Difference]: With dead ends: 530 [2021-11-05 13:00:37,489 INFO L226 Difference]: Without dead ends: 528 [2021-11-05 13:00:37,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:00:37,490 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 345 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 407.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 452.06ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:37,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1286 Invalid, 109 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 452.06ms Time] [2021-11-05 13:00:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-05 13:00:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 303. [2021-11-05 13:00:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 286 states have (on average 1.1923076923076923) internal successors, (341), 302 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 341 transitions. [2021-11-05 13:00:37,503 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 341 transitions. Word has length 93 [2021-11-05 13:00:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:37,504 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 341 transitions. [2021-11-05 13:00:37,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 341 transitions. [2021-11-05 13:00:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 13:00:37,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:37,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:37,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:00:37,505 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1620736517, now seen corresponding path program 1 times [2021-11-05 13:00:37,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:37,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91962426] [2021-11-05 13:00:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:37,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:37,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91962426] [2021-11-05 13:00:37,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91962426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:37,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:37,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:00:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081521080] [2021-11-05 13:00:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:37,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:00:37,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:00:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:00:37,989 INFO L87 Difference]: Start difference. First operand 303 states and 341 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:38,487 INFO L93 Difference]: Finished difference Result 527 states and 607 transitions. [2021-11-05 13:00:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:00:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 13:00:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:38,489 INFO L225 Difference]: With dead ends: 527 [2021-11-05 13:00:38,489 INFO L226 Difference]: Without dead ends: 525 [2021-11-05 13:00:38,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:00:38,490 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 345 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 367.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 413.08ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:38,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1279 Invalid, 104 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 413.08ms Time] [2021-11-05 13:00:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-05 13:00:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 299. [2021-11-05 13:00:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.1908127208480566) internal successors, (337), 298 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 337 transitions. [2021-11-05 13:00:38,505 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 337 transitions. Word has length 93 [2021-11-05 13:00:38,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:38,505 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 337 transitions. [2021-11-05 13:00:38,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 337 transitions. [2021-11-05 13:00:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 13:00:38,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:38,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:38,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:00:38,507 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1609934162, now seen corresponding path program 1 times [2021-11-05 13:00:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:38,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968682216] [2021-11-05 13:00:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:38,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:39,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:39,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968682216] [2021-11-05 13:00:39,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968682216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:39,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:39,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:00:39,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063037118] [2021-11-05 13:00:39,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:39,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:00:39,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:00:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:00:39,047 INFO L87 Difference]: Start difference. First operand 299 states and 337 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:39,625 INFO L93 Difference]: Finished difference Result 697 states and 796 transitions. [2021-11-05 13:00:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:00:39,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-05 13:00:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:39,627 INFO L225 Difference]: With dead ends: 697 [2021-11-05 13:00:39,627 INFO L226 Difference]: Without dead ends: 526 [2021-11-05 13:00:39,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 541.45ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:00:39,628 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 943 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.35ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:39,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1811 Invalid, 46 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 204.35ms Time] [2021-11-05 13:00:39,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-05 13:00:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 309. [2021-11-05 13:00:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 293 states have (on average 1.1945392491467577) internal successors, (350), 308 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 350 transitions. [2021-11-05 13:00:39,643 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 350 transitions. Word has length 97 [2021-11-05 13:00:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:39,643 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 350 transitions. [2021-11-05 13:00:39,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 350 transitions. [2021-11-05 13:00:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 13:00:39,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:39,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:39,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 13:00:39,644 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1620792263, now seen corresponding path program 1 times [2021-11-05 13:00:39,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:39,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286408363] [2021-11-05 13:00:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:39,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:39,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:39,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286408363] [2021-11-05 13:00:39,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286408363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:39,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:39,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:00:39,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293048692] [2021-11-05 13:00:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:39,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:00:39,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:00:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:00:39,873 INFO L87 Difference]: Start difference. First operand 309 states and 350 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:39,896 INFO L93 Difference]: Finished difference Result 373 states and 421 transitions. [2021-11-05 13:00:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:00:39,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-05 13:00:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:39,914 INFO L225 Difference]: With dead ends: 373 [2021-11-05 13:00:39,915 INFO L226 Difference]: Without dead ends: 309 [2021-11-05 13:00:39,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:00:39,916 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 206 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:39,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 447 Invalid, 4 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.26ms Time] [2021-11-05 13:00:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-05 13:00:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-05 13:00:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 293 states have (on average 1.1877133105802047) internal successors, (348), 308 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 348 transitions. [2021-11-05 13:00:39,931 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 348 transitions. Word has length 98 [2021-11-05 13:00:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:39,931 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 348 transitions. [2021-11-05 13:00:39,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 348 transitions. [2021-11-05 13:00:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 13:00:39,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:39,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:39,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 13:00:39,933 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1362626825, now seen corresponding path program 1 times [2021-11-05 13:00:39,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:39,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124210893] [2021-11-05 13:00:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:39,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:40,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:40,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124210893] [2021-11-05 13:00:40,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124210893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:40,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:40,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:00:40,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432630382] [2021-11-05 13:00:40,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:40,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:00:40,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:40,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:00:40,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:00:40,286 INFO L87 Difference]: Start difference. First operand 309 states and 348 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:00:40,373 INFO L93 Difference]: Finished difference Result 431 states and 483 transitions. [2021-11-05 13:00:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:00:40,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-05 13:00:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:00:40,375 INFO L225 Difference]: With dead ends: 431 [2021-11-05 13:00:40,375 INFO L226 Difference]: Without dead ends: 371 [2021-11-05 13:00:40,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:00:40,376 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 135 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.66ms IncrementalHoareTripleChecker+Time [2021-11-05 13:00:40,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 976 Invalid, 10 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 42.66ms Time] [2021-11-05 13:00:40,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-05 13:00:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 311. [2021-11-05 13:00:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 295 states have (on average 1.1864406779661016) internal successors, (350), 310 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 350 transitions. [2021-11-05 13:00:40,391 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 350 transitions. Word has length 98 [2021-11-05 13:00:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:00:40,391 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 350 transitions. [2021-11-05 13:00:40,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 350 transitions. [2021-11-05 13:00:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 13:00:40,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:00:40,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:00:40,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 13:00:40,394 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:00:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:00:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash -682568455, now seen corresponding path program 1 times [2021-11-05 13:00:40,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:00:40,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017953776] [2021-11-05 13:00:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:00:40,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:00:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:00:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:00:44,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:00:44,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017953776] [2021-11-05 13:00:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017953776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:00:44,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:00:44,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-05 13:00:44,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692347762] [2021-11-05 13:00:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:00:44,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 13:00:44,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:00:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 13:00:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-05 13:00:44,685 INFO L87 Difference]: Start difference. First operand 311 states and 350 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:00:46,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:48,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:51,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:53,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:55,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:57,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:00:59,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:01:01,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:01:03,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:01:05,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:01:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:01:19,195 INFO L93 Difference]: Finished difference Result 448 states and 506 transitions. [2021-11-05 13:01:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-05 13:01:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-05 13:01:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:01:19,197 INFO L225 Difference]: With dead ends: 448 [2021-11-05 13:01:19,197 INFO L226 Difference]: Without dead ends: 395 [2021-11-05 13:01:19,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 9810.10ms TimeCoverageRelationStatistics Valid=352, Invalid=2300, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 13:01:19,199 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 1972 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 132 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24886.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.27ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26660.33ms IncrementalHoareTripleChecker+Time [2021-11-05 13:01:19,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1972 Valid, 4065 Invalid, 1378 Unknown, 0 Unchecked, 21.27ms Time], IncrementalHoareTripleChecker [132 Valid, 1236 Invalid, 10 Unknown, 0 Unchecked, 26660.33ms Time] [2021-11-05 13:01:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-05 13:01:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 317. [2021-11-05 13:01:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 301 states have (on average 1.1893687707641196) internal successors, (358), 316 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 358 transitions. [2021-11-05 13:01:19,221 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 358 transitions. Word has length 98 [2021-11-05 13:01:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:01:19,221 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 358 transitions. [2021-11-05 13:01:19,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 358 transitions. [2021-11-05 13:01:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 13:01:19,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:01:19,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:01:19,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 13:01:19,222 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:01:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:01:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1092438907, now seen corresponding path program 1 times [2021-11-05 13:01:19,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:01:19,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046409682] [2021-11-05 13:01:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:01:19,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:01:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:01:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:01:19,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:01:19,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046409682] [2021-11-05 13:01:19,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046409682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:01:19,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:01:19,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:01:19,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208893835] [2021-11-05 13:01:19,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:01:19,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:01:19,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:01:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:01:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:01:19,653 INFO L87 Difference]: Start difference. First operand 317 states and 358 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:01:19,991 INFO L93 Difference]: Finished difference Result 375 states and 421 transitions. [2021-11-05 13:01:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:01:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-05 13:01:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:01:19,993 INFO L225 Difference]: With dead ends: 375 [2021-11-05 13:01:19,993 INFO L226 Difference]: Without dead ends: 317 [2021-11-05 13:01:19,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 268.66ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:01:19,994 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1112 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.75ms IncrementalHoareTripleChecker+Time [2021-11-05 13:01:19,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 705 Invalid, 60 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 170.75ms Time] [2021-11-05 13:01:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-05 13:01:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-11-05 13:01:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 301 states have (on average 1.1827242524916943) internal successors, (356), 316 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 356 transitions. [2021-11-05 13:01:20,031 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 356 transitions. Word has length 98 [2021-11-05 13:01:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:01:20,032 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 356 transitions. [2021-11-05 13:01:20,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 356 transitions. [2021-11-05 13:01:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 13:01:20,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:01:20,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:01:20,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 13:01:20,033 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:01:20,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:01:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash -97700393, now seen corresponding path program 1 times [2021-11-05 13:01:20,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:01:20,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110554427] [2021-11-05 13:01:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:01:20,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:01:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:01:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:01:20,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:01:20,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110554427] [2021-11-05 13:01:20,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110554427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:01:20,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:01:20,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:01:20,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79084187] [2021-11-05 13:01:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:01:20,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:01:20,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:01:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:01:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:01:20,508 INFO L87 Difference]: Start difference. First operand 317 states and 356 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:01:21,567 INFO L93 Difference]: Finished difference Result 671 states and 763 transitions. [2021-11-05 13:01:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:01:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-05 13:01:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:01:21,570 INFO L225 Difference]: With dead ends: 671 [2021-11-05 13:01:21,571 INFO L226 Difference]: Without dead ends: 533 [2021-11-05 13:01:21,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 699.99ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:01:21,572 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 1163 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 496.96ms IncrementalHoareTripleChecker+Time [2021-11-05 13:01:21,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 1434 Invalid, 112 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 496.96ms Time] [2021-11-05 13:01:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-05 13:01:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 317. [2021-11-05 13:01:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 301 states have (on average 1.1794019933554818) internal successors, (355), 316 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 355 transitions. [2021-11-05 13:01:21,591 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 355 transitions. Word has length 99 [2021-11-05 13:01:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:01:21,592 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 355 transitions. [2021-11-05 13:01:21,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 355 transitions. [2021-11-05 13:01:21,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:01:21,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:01:21,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:01:21,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 13:01:21,593 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:01:21,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:01:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1268040154, now seen corresponding path program 1 times [2021-11-05 13:01:21,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:01:21,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043770973] [2021-11-05 13:01:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:01:21,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:01:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:01:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:01:23,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:01:23,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043770973] [2021-11-05 13:01:23,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043770973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:01:23,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:01:23,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:01:23,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781490893] [2021-11-05 13:01:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:01:23,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:01:23,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:01:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:01:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:01:23,462 INFO L87 Difference]: Start difference. First operand 317 states and 355 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:01:23,824 INFO L93 Difference]: Finished difference Result 611 states and 683 transitions. [2021-11-05 13:01:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:01:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-05 13:01:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:01:23,826 INFO L225 Difference]: With dead ends: 611 [2021-11-05 13:01:23,826 INFO L226 Difference]: Without dead ends: 317 [2021-11-05 13:01:23,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:01:23,827 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 2 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275.71ms IncrementalHoareTripleChecker+Time [2021-11-05 13:01:23,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 917 Invalid, 65 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 275.71ms Time] [2021-11-05 13:01:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-05 13:01:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 311. [2021-11-05 13:01:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 295 states have (on average 1.1694915254237288) internal successors, (345), 310 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 345 transitions. [2021-11-05 13:01:23,848 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 345 transitions. Word has length 100 [2021-11-05 13:01:23,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:01:23,848 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 345 transitions. [2021-11-05 13:01:23,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:01:23,848 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 345 transitions. [2021-11-05 13:01:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 13:01:23,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:01:23,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:01:23,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 13:01:23,849 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-05 13:01:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:01:23,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1911306815, now seen corresponding path program 1 times [2021-11-05 13:01:23,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:01:23,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470736443] [2021-11-05 13:01:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:01:23,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:01:23,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:01:23,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657332244] [2021-11-05 13:01:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:01:23,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:01:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:01:23,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:01:23,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15