./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 173e3943 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-dev-173e394 [2021-11-06 10:59:18,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:59:18,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:59:18,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:59:18,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:59:18,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:59:18,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:59:18,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:59:18,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:59:18,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:59:18,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:59:18,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:59:18,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:59:18,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:59:18,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:59:18,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:59:18,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:59:18,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:59:18,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:59:18,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:59:18,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:59:18,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:59:18,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:59:18,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:59:18,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:59:18,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:59:18,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:59:18,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:59:18,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:59:18,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:59:18,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:59:18,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:59:18,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:59:18,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:59:18,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:59:18,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:59:18,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:59:18,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:59:18,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:59:18,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:59:18,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:59:18,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:59:19,016 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:59:19,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:59:19,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:59:19,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:59:19,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:59:19,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:59:19,019 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:59:19,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:59:19,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:59:19,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:59:19,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:59:19,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:59:19,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:59:19,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:59:19,021 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:59:19,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:59:19,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:59:19,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:59:19,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:59:19,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:59:19,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:59:19,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:59:19,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:59:19,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:59:19,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:59:19,023 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:59:19,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:59:19,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:59:19,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:59:19,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-06 10:59:19,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:59:19,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:59:19,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:59:19,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:59:19,247 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:59:19,247 INFO L432 ainManager$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 [2021-11-06 10:59:19,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6003fe7a/ac491879fb394164baf7d09351060aad/FLAGfb30fd44b [2021-11-06 10:59:19,962 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:59:19,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-06 10:59:20,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6003fe7a/ac491879fb394164baf7d09351060aad/FLAGfb30fd44b [2021-11-06 10:59:20,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6003fe7a/ac491879fb394164baf7d09351060aad [2021-11-06 10:59:20,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:59:20,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:59:20,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:59:20,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:59:20,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:59:20,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:59:20" (1/1) ... [2021-11-06 10:59:20,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2738e817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:20, skipping insertion in model container [2021-11-06 10:59:20,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:59:20" (1/1) ... [2021-11-06 10:59:20,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:59:20,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:59:20,490 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] [2021-11-06 10:59:20,498 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] [2021-11-06 10:59:20,514 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:59:20,519 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:59:21,159 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,181 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:59:21,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:59:21,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:59:21,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:59:21,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:59:21,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:59:21,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:59:21,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:59:21,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:59:21,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:59:21,702 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:59:21,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,947 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:21,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:59:22,057 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:59:22,081 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] [2021-11-06 10:59:22,081 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] [2021-11-06 10:59:22,083 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:59:22,084 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:59:22,117 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:59:22,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:59:22,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:59:22,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:59:22,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:59:22,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:59:22,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:59:22,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:59:22,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:59:22,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:59:22,174 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:59:22,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,314 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,314 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:59:22,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:59:22,571 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:59:22,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22 WrapperNode [2021-11-06 10:59:22,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:59:22,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:59:22,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:59:22,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:59:22,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:59:22,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:59:22,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:59:22,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:59:22,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:59:22,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:59:22,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:59:22,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:59:22,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (1/1) ... [2021-11-06 10:59:22,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:59:22,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:59:22,988 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) [2021-11-06 10:59:23,019 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 [2021-11-06 10:59:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 10:59:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:59:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:59:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:59:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:59:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:59:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 10:59:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:59:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 10:59:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:59:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:59:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:59:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:59:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:59:31,813 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !true; [2021-11-06 10:59:31,813 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !true; [2021-11-06 10:59:31,813 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##185: assume !true; [2021-11-06 10:59:31,813 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##132: assume !true; [2021-11-06 10:59:31,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:59:31,824 INFO L299 CfgBuilder]: Removed 289 assume(true) statements. [2021-11-06 10:59:31,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:59:31 BoogieIcfgContainer [2021-11-06 10:59:31,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:59:31,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:59:31,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:59:31,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:59:31,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:59:20" (1/3) ... [2021-11-06 10:59:31,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6083e503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:59:31, skipping insertion in model container [2021-11-06 10:59:31,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:22" (2/3) ... [2021-11-06 10:59:31,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6083e503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:59:31, skipping insertion in model container [2021-11-06 10:59:31,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:59:31" (3/3) ... [2021-11-06 10:59:31,834 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-06 10:59:31,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:59:31,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-06 10:59:31,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:59:31,900 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 [2021-11-06 10:59:31,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-06 10:59:31,926 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) [2021-11-06 10:59:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:59:31,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:31,934 INFO L513 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] [2021-11-06 10:59:31,935 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)] === [2021-11-06 10:59:31,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash -468143570, now seen corresponding path program 1 times [2021-11-06 10:59:31,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:31,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470995048] [2021-11-06 10:59:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:31,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:32,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:32,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470995048] [2021-11-06 10:59:32,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470995048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:32,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:32,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:59:32,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839199773] [2021-11-06 10:59:32,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:59:32,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:59:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:59:32,515 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) [2021-11-06 10:59:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:32,564 INFO L93 Difference]: Finished difference Result 603 states and 808 transitions. [2021-11-06 10:59:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:59:32,565 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 [2021-11-06 10:59:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:32,582 INFO L225 Difference]: With dead ends: 603 [2021-11-06 10:59:32,582 INFO L226 Difference]: Without dead ends: 297 [2021-11-06 10:59:32,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:59:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-06 10:59:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-11-06 10:59:32,644 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) [2021-11-06 10:59:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 350 transitions. [2021-11-06 10:59:32,654 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 350 transitions. Word has length 72 [2021-11-06 10:59:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:32,654 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 350 transitions. [2021-11-06 10:59:32,655 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) [2021-11-06 10:59:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 350 transitions. [2021-11-06 10:59:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:59:32,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:32,659 INFO L513 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] [2021-11-06 10:59:32,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:59:32,659 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)] === [2021-11-06 10:59:32,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1429628202, now seen corresponding path program 1 times [2021-11-06 10:59:32,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:32,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464155612] [2021-11-06 10:59:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:32,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:32,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:59:32,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376974309] [2021-11-06 10:59:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:32,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:59:32,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:59:32,764 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) [2021-11-06 10:59:32,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:59:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:33,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 10:59:33,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:59:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:34,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:34,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464155612] [2021-11-06 10:59:34,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:59:34,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376974309] [2021-11-06 10:59:34,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376974309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:34,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:34,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:59:34,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197755891] [2021-11-06 10:59:34,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:59:34,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:59:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:59:34,109 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) [2021-11-06 10:59:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:34,296 INFO L93 Difference]: Finished difference Result 853 states and 1006 transitions. [2021-11-06 10:59:34,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:59:34,298 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 [2021-11-06 10:59:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:34,301 INFO L225 Difference]: With dead ends: 853 [2021-11-06 10:59:34,301 INFO L226 Difference]: Without dead ends: 578 [2021-11-06 10:59:34,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:59:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-06 10:59:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 303. [2021-11-06 10:59:34,320 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) [2021-11-06 10:59:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 356 transitions. [2021-11-06 10:59:34,321 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 356 transitions. Word has length 72 [2021-11-06 10:59:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:34,321 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 356 transitions. [2021-11-06 10:59:34,321 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) [2021-11-06 10:59:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 356 transitions. [2021-11-06 10:59:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:59:34,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:34,323 INFO L513 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] [2021-11-06 10:59:34,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 10:59:34,527 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 [2021-11-06 10:59:34,527 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)] === [2021-11-06 10:59:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 874876930, now seen corresponding path program 1 times [2021-11-06 10:59:34,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:34,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833239239] [2021-11-06 10:59:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:34,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:35,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:35,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833239239] [2021-11-06 10:59:35,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833239239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:35,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:35,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:59:35,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469551476] [2021-11-06 10:59:35,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:59:35,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:59:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:59:35,030 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) [2021-11-06 10:59:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:40,309 INFO L93 Difference]: Finished difference Result 574 states and 675 transitions. [2021-11-06 10:59:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:59:40,310 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 [2021-11-06 10:59:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:40,311 INFO L225 Difference]: With dead ends: 574 [2021-11-06 10:59:40,311 INFO L226 Difference]: Without dead ends: 309 [2021-11-06 10:59:40,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:59:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-06 10:59:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2021-11-06 10:59:40,325 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) [2021-11-06 10:59:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 358 transitions. [2021-11-06 10:59:40,326 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 358 transitions. Word has length 76 [2021-11-06 10:59:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:40,328 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 358 transitions. [2021-11-06 10:59:40,331 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) [2021-11-06 10:59:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 358 transitions. [2021-11-06 10:59:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:59:40,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:40,337 INFO L513 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] [2021-11-06 10:59:40,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:59:40,337 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)] === [2021-11-06 10:59:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1750895936, now seen corresponding path program 1 times [2021-11-06 10:59:40,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:40,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651134833] [2021-11-06 10:59:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:40,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:40,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:40,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651134833] [2021-11-06 10:59:40,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651134833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:40,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:40,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:59:40,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079153757] [2021-11-06 10:59:40,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:59:40,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:59:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:59:40,633 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) [2021-11-06 10:59:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:40,773 INFO L93 Difference]: Finished difference Result 573 states and 673 transitions. [2021-11-06 10:59:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:59:40,774 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 [2021-11-06 10:59:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:40,776 INFO L225 Difference]: With dead ends: 573 [2021-11-06 10:59:40,776 INFO L226 Difference]: Without dead ends: 303 [2021-11-06 10:59:40,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:59:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-06 10:59:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-06 10:59:40,784 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) [2021-11-06 10:59:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 351 transitions. [2021-11-06 10:59:40,785 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 351 transitions. Word has length 76 [2021-11-06 10:59:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:40,785 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 351 transitions. [2021-11-06 10:59:40,786 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) [2021-11-06 10:59:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 351 transitions. [2021-11-06 10:59:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:59:40,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:40,787 INFO L513 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] [2021-11-06 10:59:40,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:59:40,787 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)] === [2021-11-06 10:59:40,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash -136947257, now seen corresponding path program 1 times [2021-11-06 10:59:40,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:40,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156242394] [2021-11-06 10:59:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:40,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:41,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:41,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156242394] [2021-11-06 10:59:41,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156242394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:41,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:41,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:59:41,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747712776] [2021-11-06 10:59:41,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:59:41,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:59:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:59:41,113 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) [2021-11-06 10:59:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:46,496 INFO L93 Difference]: Finished difference Result 759 states and 877 transitions. [2021-11-06 10:59:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:59:46,497 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 [2021-11-06 10:59:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:46,499 INFO L225 Difference]: With dead ends: 759 [2021-11-06 10:59:46,499 INFO L226 Difference]: Without dead ends: 493 [2021-11-06 10:59:46,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:59:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-06 10:59:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 303. [2021-11-06 10:59:46,536 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) [2021-11-06 10:59:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 346 transitions. [2021-11-06 10:59:46,537 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 346 transitions. Word has length 78 [2021-11-06 10:59:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:46,537 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 346 transitions. [2021-11-06 10:59:46,538 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) [2021-11-06 10:59:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 346 transitions. [2021-11-06 10:59:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 10:59:46,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:46,543 INFO L513 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] [2021-11-06 10:59:46,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:59:46,543 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)] === [2021-11-06 10:59:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash -505310154, now seen corresponding path program 1 times [2021-11-06 10:59:46,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:46,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604140596] [2021-11-06 10:59:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:46,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:47,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:47,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604140596] [2021-11-06 10:59:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604140596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:47,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:47,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:59:47,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137347349] [2021-11-06 10:59:47,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:59:47,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:59:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:59:47,048 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) [2021-11-06 10:59:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:47,553 INFO L93 Difference]: Finished difference Result 587 states and 675 transitions. [2021-11-06 10:59:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:59:47,554 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 [2021-11-06 10:59:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:47,555 INFO L225 Difference]: With dead ends: 587 [2021-11-06 10:59:47,555 INFO L226 Difference]: Without dead ends: 383 [2021-11-06 10:59:47,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:59:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-06 10:59:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 303. [2021-11-06 10:59:47,566 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) [2021-11-06 10:59:47,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 343 transitions. [2021-11-06 10:59:47,567 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 343 transitions. Word has length 79 [2021-11-06 10:59:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:47,571 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 343 transitions. [2021-11-06 10:59:47,572 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) [2021-11-06 10:59:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 343 transitions. [2021-11-06 10:59:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:59:47,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:47,573 INFO L513 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] [2021-11-06 10:59:47,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:59:47,573 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)] === [2021-11-06 10:59:47,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1214273725, now seen corresponding path program 1 times [2021-11-06 10:59:47,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:47,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716944785] [2021-11-06 10:59:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:47,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:48,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:48,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716944785] [2021-11-06 10:59:48,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716944785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:48,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:48,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:59:48,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767702409] [2021-11-06 10:59:48,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:59:48,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:59:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:59:48,294 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) [2021-11-06 10:59:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:59:54,097 INFO L93 Difference]: Finished difference Result 702 states and 795 transitions. [2021-11-06 10:59:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:59:54,098 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 [2021-11-06 10:59:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:59:54,100 INFO L225 Difference]: With dead ends: 702 [2021-11-06 10:59:54,100 INFO L226 Difference]: Without dead ends: 494 [2021-11-06 10:59:54,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:59:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-06 10:59:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 303. [2021-11-06 10:59:54,112 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) [2021-11-06 10:59:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 342 transitions. [2021-11-06 10:59:54,113 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 342 transitions. Word has length 80 [2021-11-06 10:59:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:59:54,113 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 342 transitions. [2021-11-06 10:59:54,113 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) [2021-11-06 10:59:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 342 transitions. [2021-11-06 10:59:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 10:59:54,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:59:54,114 INFO L513 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] [2021-11-06 10:59:54,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:59:54,115 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)] === [2021-11-06 10:59:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:59:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash -708297866, now seen corresponding path program 1 times [2021-11-06 10:59:54,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:59:54,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448546143] [2021-11-06 10:59:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:59:54,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:59:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:59:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:59:54,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:59:54,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448546143] [2021-11-06 10:59:54,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448546143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:59:54,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:59:54,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:59:54,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078571431] [2021-11-06 10:59:54,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:59:54,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:59:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:59:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:59:54,835 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) [2021-11-06 11:00:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:03,102 INFO L93 Difference]: Finished difference Result 612 states and 693 transitions. [2021-11-06 11:00:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 11:00:03,102 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 [2021-11-06 11:00:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:03,104 INFO L225 Difference]: With dead ends: 612 [2021-11-06 11:00:03,104 INFO L226 Difference]: Without dead ends: 392 [2021-11-06 11:00:03,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-06 11:00:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-06 11:00:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 303. [2021-11-06 11:00:03,116 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) [2021-11-06 11:00:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 341 transitions. [2021-11-06 11:00:03,117 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 341 transitions. Word has length 83 [2021-11-06 11:00:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:03,118 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 341 transitions. [2021-11-06 11:00:03,118 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) [2021-11-06 11:00:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 341 transitions. [2021-11-06 11:00:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 11:00:03,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:03,120 INFO L513 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] [2021-11-06 11:00:03,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:00:03,120 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)] === [2021-11-06 11:00:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2107435938, now seen corresponding path program 1 times [2021-11-06 11:00:03,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:03,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943102424] [2021-11-06 11:00:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:03,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:04,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:04,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943102424] [2021-11-06 11:00:04,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943102424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:04,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:04,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:00:04,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953364612] [2021-11-06 11:00:04,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:00:04,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:00:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:00:04,323 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) [2021-11-06 11:00:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:04,523 INFO L93 Difference]: Finished difference Result 303 states and 341 transitions. [2021-11-06 11:00:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:00:04,524 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 [2021-11-06 11:00:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:04,525 INFO L225 Difference]: With dead ends: 303 [2021-11-06 11:00:04,526 INFO L226 Difference]: Without dead ends: 301 [2021-11-06 11:00:04,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:00:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-06 11:00:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2021-11-06 11:00:04,536 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) [2021-11-06 11:00:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 339 transitions. [2021-11-06 11:00:04,537 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 339 transitions. Word has length 86 [2021-11-06 11:00:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:04,538 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 339 transitions. [2021-11-06 11:00:04,538 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) [2021-11-06 11:00:04,538 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 339 transitions. [2021-11-06 11:00:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 11:00:04,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:04,539 INFO L513 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] [2021-11-06 11:00:04,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:00:04,539 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)] === [2021-11-06 11:00:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1620676935, now seen corresponding path program 1 times [2021-11-06 11:00:04,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:04,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628949881] [2021-11-06 11:00:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:04,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:05,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:05,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628949881] [2021-11-06 11:00:05,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628949881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:05,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:05,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:00:05,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566094093] [2021-11-06 11:00:05,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:00:05,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:00:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:00:05,281 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) [2021-11-06 11:00:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:05,736 INFO L93 Difference]: Finished difference Result 530 states and 610 transitions. [2021-11-06 11:00:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:00:05,737 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 [2021-11-06 11:00:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:05,739 INFO L225 Difference]: With dead ends: 530 [2021-11-06 11:00:05,739 INFO L226 Difference]: Without dead ends: 528 [2021-11-06 11:00:05,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:00:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-06 11:00:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 303. [2021-11-06 11:00:05,754 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) [2021-11-06 11:00:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 341 transitions. [2021-11-06 11:00:05,755 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 341 transitions. Word has length 93 [2021-11-06 11:00:05,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:05,755 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 341 transitions. [2021-11-06 11:00:05,755 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) [2021-11-06 11:00:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 341 transitions. [2021-11-06 11:00:05,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 11:00:05,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:05,756 INFO L513 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] [2021-11-06 11:00:05,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:00:05,757 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)] === [2021-11-06 11:00:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1620736517, now seen corresponding path program 1 times [2021-11-06 11:00:05,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:05,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772840416] [2021-11-06 11:00:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:05,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:06,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:06,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772840416] [2021-11-06 11:00:06,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772840416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:06,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:06,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:00:06,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652118717] [2021-11-06 11:00:06,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:00:06,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:00:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:00:06,252 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) [2021-11-06 11:00:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:06,744 INFO L93 Difference]: Finished difference Result 527 states and 607 transitions. [2021-11-06 11:00:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:00:06,745 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 [2021-11-06 11:00:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:06,747 INFO L225 Difference]: With dead ends: 527 [2021-11-06 11:00:06,747 INFO L226 Difference]: Without dead ends: 525 [2021-11-06 11:00:06,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:00:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-06 11:00:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 299. [2021-11-06 11:00:06,764 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) [2021-11-06 11:00:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 337 transitions. [2021-11-06 11:00:06,765 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 337 transitions. Word has length 93 [2021-11-06 11:00:06,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:06,765 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 337 transitions. [2021-11-06 11:00:06,765 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) [2021-11-06 11:00:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 337 transitions. [2021-11-06 11:00:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 11:00:06,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:06,767 INFO L513 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] [2021-11-06 11:00:06,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 11:00:06,767 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)] === [2021-11-06 11:00:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1609934162, now seen corresponding path program 1 times [2021-11-06 11:00:06,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:06,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642192633] [2021-11-06 11:00:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:06,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:07,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:07,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642192633] [2021-11-06 11:00:07,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642192633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:07,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:07,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:00:07,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826873888] [2021-11-06 11:00:07,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:00:07,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:00:07,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:00:07,278 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) [2021-11-06 11:00:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:07,759 INFO L93 Difference]: Finished difference Result 697 states and 796 transitions. [2021-11-06 11:00:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:00:07,760 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 [2021-11-06 11:00:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:07,763 INFO L225 Difference]: With dead ends: 697 [2021-11-06 11:00:07,763 INFO L226 Difference]: Without dead ends: 526 [2021-11-06 11:00:07,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:00:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-06 11:00:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 309. [2021-11-06 11:00:07,780 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) [2021-11-06 11:00:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 350 transitions. [2021-11-06 11:00:07,781 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 350 transitions. Word has length 97 [2021-11-06 11:00:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:07,781 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 350 transitions. [2021-11-06 11:00:07,782 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) [2021-11-06 11:00:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 350 transitions. [2021-11-06 11:00:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 11:00:07,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:07,783 INFO L513 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] [2021-11-06 11:00:07,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 11:00:07,783 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)] === [2021-11-06 11:00:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1620792263, now seen corresponding path program 1 times [2021-11-06 11:00:07,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:07,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584023465] [2021-11-06 11:00:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:07,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:08,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:08,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584023465] [2021-11-06 11:00:08,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584023465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:08,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:08,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:00:08,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969477501] [2021-11-06 11:00:08,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:00:08,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:00:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:00:08,064 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) [2021-11-06 11:00:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:08,092 INFO L93 Difference]: Finished difference Result 373 states and 421 transitions. [2021-11-06 11:00:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:00:08,093 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 [2021-11-06 11:00:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:08,095 INFO L225 Difference]: With dead ends: 373 [2021-11-06 11:00:08,095 INFO L226 Difference]: Without dead ends: 309 [2021-11-06 11:00:08,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:00:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-06 11:00:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-06 11:00:08,114 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) [2021-11-06 11:00:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 348 transitions. [2021-11-06 11:00:08,115 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 348 transitions. Word has length 98 [2021-11-06 11:00:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:08,116 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 348 transitions. [2021-11-06 11:00:08,116 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) [2021-11-06 11:00:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 348 transitions. [2021-11-06 11:00:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 11:00:08,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:08,117 INFO L513 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] [2021-11-06 11:00:08,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 11:00:08,118 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)] === [2021-11-06 11:00:08,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1362626825, now seen corresponding path program 1 times [2021-11-06 11:00:08,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:08,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378574657] [2021-11-06 11:00:08,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:08,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:08,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:08,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378574657] [2021-11-06 11:00:08,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378574657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:08,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:08,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:00:08,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288708730] [2021-11-06 11:00:08,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:00:08,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:00:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:00:08,523 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) [2021-11-06 11:00:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:08,609 INFO L93 Difference]: Finished difference Result 431 states and 483 transitions. [2021-11-06 11:00:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:00:08,610 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 [2021-11-06 11:00:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:08,611 INFO L225 Difference]: With dead ends: 431 [2021-11-06 11:00:08,611 INFO L226 Difference]: Without dead ends: 371 [2021-11-06 11:00:08,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:00:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-06 11:00:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 311. [2021-11-06 11:00:08,629 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) [2021-11-06 11:00:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 350 transitions. [2021-11-06 11:00:08,630 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 350 transitions. Word has length 98 [2021-11-06 11:00:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:08,630 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 350 transitions. [2021-11-06 11:00:08,630 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) [2021-11-06 11:00:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 350 transitions. [2021-11-06 11:00:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 11:00:08,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:08,631 INFO L513 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] [2021-11-06 11:00:08,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 11:00:08,632 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)] === [2021-11-06 11:00:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash -682568455, now seen corresponding path program 1 times [2021-11-06 11:00:08,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:08,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002375915] [2021-11-06 11:00:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:08,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:12,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:12,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002375915] [2021-11-06 11:00:12,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002375915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:12,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:12,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-06 11:00:12,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000185224] [2021-11-06 11:00:12,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-06 11:00:12,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-06 11:00:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-06 11:00:12,612 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) [2021-11-06 11:00:43,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:43,995 INFO L93 Difference]: Finished difference Result 448 states and 506 transitions. [2021-11-06 11:00:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-06 11:00:43,996 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 [2021-11-06 11:00:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:43,998 INFO L225 Difference]: With dead ends: 448 [2021-11-06 11:00:43,998 INFO L226 Difference]: Without dead ends: 395 [2021-11-06 11:00:43,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=352, Invalid=2300, Unknown=0, NotChecked=0, Total=2652 [2021-11-06 11:00:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-06 11:00:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 317. [2021-11-06 11:00:44,022 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) [2021-11-06 11:00:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 358 transitions. [2021-11-06 11:00:44,023 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 358 transitions. Word has length 98 [2021-11-06 11:00:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:44,024 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 358 transitions. [2021-11-06 11:00:44,024 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) [2021-11-06 11:00:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 358 transitions. [2021-11-06 11:00:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 11:00:44,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:44,025 INFO L513 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] [2021-11-06 11:00:44,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 11:00:44,026 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)] === [2021-11-06 11:00:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1092438907, now seen corresponding path program 1 times [2021-11-06 11:00:44,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:44,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929824755] [2021-11-06 11:00:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:44,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:44,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:44,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929824755] [2021-11-06 11:00:44,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929824755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:44,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:44,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:00:44,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641309769] [2021-11-06 11:00:44,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:00:44,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:00:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:00:44,417 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) [2021-11-06 11:00:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:44,726 INFO L93 Difference]: Finished difference Result 375 states and 421 transitions. [2021-11-06 11:00:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:00:44,727 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 [2021-11-06 11:00:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:44,728 INFO L225 Difference]: With dead ends: 375 [2021-11-06 11:00:44,728 INFO L226 Difference]: Without dead ends: 317 [2021-11-06 11:00:44,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:00:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-06 11:00:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-11-06 11:00:44,750 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) [2021-11-06 11:00:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 356 transitions. [2021-11-06 11:00:44,751 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 356 transitions. Word has length 98 [2021-11-06 11:00:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:44,752 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 356 transitions. [2021-11-06 11:00:44,752 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) [2021-11-06 11:00:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 356 transitions. [2021-11-06 11:00:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 11:00:44,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:44,753 INFO L513 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] [2021-11-06 11:00:44,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 11:00:44,754 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)] === [2021-11-06 11:00:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash -97700393, now seen corresponding path program 1 times [2021-11-06 11:00:44,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:44,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084597768] [2021-11-06 11:00:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:44,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:45,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:45,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084597768] [2021-11-06 11:00:45,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084597768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:45,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:45,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:00:45,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132315514] [2021-11-06 11:00:45,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:00:45,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:00:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:00:45,236 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) [2021-11-06 11:00:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:46,112 INFO L93 Difference]: Finished difference Result 671 states and 763 transitions. [2021-11-06 11:00:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:00:46,113 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 [2021-11-06 11:00:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:46,115 INFO L225 Difference]: With dead ends: 671 [2021-11-06 11:00:46,115 INFO L226 Difference]: Without dead ends: 533 [2021-11-06 11:00:46,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:00:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-06 11:00:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 317. [2021-11-06 11:00:46,141 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) [2021-11-06 11:00:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 355 transitions. [2021-11-06 11:00:46,142 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 355 transitions. Word has length 99 [2021-11-06 11:00:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:46,142 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 355 transitions. [2021-11-06 11:00:46,142 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) [2021-11-06 11:00:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 355 transitions. [2021-11-06 11:00:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 11:00:46,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:46,144 INFO L513 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] [2021-11-06 11:00:46,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 11:00:46,144 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)] === [2021-11-06 11:00:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1268040154, now seen corresponding path program 1 times [2021-11-06 11:00:46,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:46,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950373315] [2021-11-06 11:00:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:46,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:00:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:00:48,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:00:48,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950373315] [2021-11-06 11:00:48,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950373315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:00:48,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:00:48,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:00:48,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668826403] [2021-11-06 11:00:48,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:00:48,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:00:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:00:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:00:48,312 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) [2021-11-06 11:00:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:00:48,638 INFO L93 Difference]: Finished difference Result 611 states and 683 transitions. [2021-11-06 11:00:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:00:48,639 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 [2021-11-06 11:00:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:00:48,640 INFO L225 Difference]: With dead ends: 611 [2021-11-06 11:00:48,640 INFO L226 Difference]: Without dead ends: 317 [2021-11-06 11:00:48,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:00:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-06 11:00:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 311. [2021-11-06 11:00:48,663 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) [2021-11-06 11:00:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 345 transitions. [2021-11-06 11:00:48,664 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 345 transitions. Word has length 100 [2021-11-06 11:00:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:00:48,665 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 345 transitions. [2021-11-06 11:00:48,665 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) [2021-11-06 11:00:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 345 transitions. [2021-11-06 11:00:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 11:00:48,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:00:48,667 INFO L513 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] [2021-11-06 11:00:48,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 11:00:48,668 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)] === [2021-11-06 11:00:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:00:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1911306815, now seen corresponding path program 1 times [2021-11-06 11:00:48,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:00:48,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060660410] [2021-11-06 11:00:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:48,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:00:48,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:00:48,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409994018] [2021-11-06 11:00:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:00:48,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:00:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:00:48,750 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) [2021-11-06 11:00:48,752 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