./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 09:35:08,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 09:35:08,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 09:35:08,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 09:35:08,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 09:35:08,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 09:35:08,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 09:35:08,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 09:35:08,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 09:35:08,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 09:35:08,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 09:35:08,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 09:35:08,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 09:35:08,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 09:35:08,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 09:35:08,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 09:35:08,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 09:35:08,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 09:35:08,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 09:35:08,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 09:35:08,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 09:35:08,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 09:35:08,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 09:35:08,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 09:35:08,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 09:35:08,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 09:35:08,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 09:35:08,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 09:35:08,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 09:35:08,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 09:35:08,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 09:35:08,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 09:35:08,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 09:35:08,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 09:35:08,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 09:35:08,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 09:35:08,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 09:35:08,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 09:35:08,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 09:35:08,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 09:35:08,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 09:35:08,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 09:35:08,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 09:35:09,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 09:35:09,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 09:35:09,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 09:35:09,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 09:35:09,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 09:35:09,002 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 09:35:09,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 09:35:09,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 09:35:09,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 09:35:09,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 09:35:09,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 09:35:09,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 09:35:09,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 09:35:09,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 09:35:09,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 09:35:09,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 09:35:09,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 09:35:09,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 09:35:09,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:35:09,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 09:35:09,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 09:35:09,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 09:35:09,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 09:35:09,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 09:35:09,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 09:35:09,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 09:35:09,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 09:35:09,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 09:35:09,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2021-11-07 09:35:09,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 09:35:09,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 09:35:09,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 09:35:09,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 09:35:09,260 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 09:35:09,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-07 09:35:09,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a21fd11/28f34d3e965044e8a5f67ccff8de02e1/FLAG787d39c49 [2021-11-07 09:35:10,035 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 09:35:10,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-07 09:35:10,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a21fd11/28f34d3e965044e8a5f67ccff8de02e1/FLAG787d39c49 [2021-11-07 09:35:10,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a21fd11/28f34d3e965044e8a5f67ccff8de02e1 [2021-11-07 09:35:10,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 09:35:10,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 09:35:10,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 09:35:10,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 09:35:10,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 09:35:10,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:35:10" (1/1) ... [2021-11-07 09:35:10,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd9374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:10, skipping insertion in model container [2021-11-07 09:35:10,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:35:10" (1/1) ... [2021-11-07 09:35:10,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 09:35:10,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 09:35:10,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2021-11-07 09:35:10,515 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2021-11-07 09:35:10,548 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:35:10,554 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:35:11,460 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,460 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,486 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,489 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:11,940 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:35:11,944 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:35:11,945 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:35:11,946 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:35:11,948 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:35:11,948 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:35:11,949 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:35:11,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:35:11,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:35:11,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:35:12,086 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:35:12,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:35:12,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:35:12,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2021-11-07 09:35:12,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2021-11-07 09:35:12,420 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:35:12,420 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:35:12,441 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,446 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,447 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,447 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,448 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,448 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:35:12,478 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:35:12,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:35:12,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:35:12,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:35:12,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:35:12,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:35:12,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:35:12,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:35:12,482 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:35:12,508 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:35:12,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,588 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:35:12,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:35:12,848 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:35:12,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12 WrapperNode [2021-11-07 09:35:12,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:35:12,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:35:12,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:35:12,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:35:12,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:12,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:35:13,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:35:13,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:35:13,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:35:13,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:35:13,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:35:13,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:35:13,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:35:13,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (1/1) ... [2021-11-07 09:35:13,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:35:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:13,209 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) [2021-11-07 09:35:13,228 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 [2021-11-07 09:35:13,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 09:35:13,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 09:35:13,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:35:13,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:35:13,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:35:13,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:35:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 09:35:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:35:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 09:35:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:35:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 09:35:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:35:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 09:35:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:35:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:35:21,319 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !true; [2021-11-07 09:35:21,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:35:21,325 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-07 09:35:21,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:35:21 BoogieIcfgContainer [2021-11-07 09:35:21,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:35:21,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:35:21,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:35:21,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:35:21,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:35:10" (1/3) ... [2021-11-07 09:35:21,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bf9c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:35:21, skipping insertion in model container [2021-11-07 09:35:21,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:12" (2/3) ... [2021-11-07 09:35:21,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bf9c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:35:21, skipping insertion in model container [2021-11-07 09:35:21,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:35:21" (3/3) ... [2021-11-07 09:35:21,333 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2021-11-07 09:35:21,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:35:21,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 09:35:21,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:35:21,373 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 [2021-11-07 09:35:21,373 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 09:35:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 09:35:21,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:21,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:21,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -227722536, now seen corresponding path program 1 times [2021-11-07 09:35:21,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:21,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76544466] [2021-11-07 09:35:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:21,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:22,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:22,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76544466] [2021-11-07 09:35:22,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76544466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:22,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:22,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 09:35:22,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116602925] [2021-11-07 09:35:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:22,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 09:35:22,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 09:35:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:35:22,064 INFO L87 Difference]: Start difference. First operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:22,099 INFO L93 Difference]: Finished difference Result 243 states and 324 transitions. [2021-11-07 09:35:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 09:35:22,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 09:35:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:22,108 INFO L225 Difference]: With dead ends: 243 [2021-11-07 09:35:22,109 INFO L226 Difference]: Without dead ends: 116 [2021-11-07 09:35:22,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:35:22,118 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:22,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 09:35:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-07 09:35:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-07 09:35:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 115 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-07 09:35:22,162 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 33 [2021-11-07 09:35:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:22,162 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-07 09:35:22,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-07 09:35:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 09:35:22,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:22,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:22,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:35:22,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1424964684, now seen corresponding path program 1 times [2021-11-07 09:35:22,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:22,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10733126] [2021-11-07 09:35:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:22,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:22,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:22,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10733126] [2021-11-07 09:35:22,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10733126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:22,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:22,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:22,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203465664] [2021-11-07 09:35:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:22,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:22,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:22,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:22,488 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:22,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:22,659 INFO L93 Difference]: Finished difference Result 298 states and 359 transitions. [2021-11-07 09:35:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:22,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 09:35:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:22,661 INFO L225 Difference]: With dead ends: 298 [2021-11-07 09:35:22,661 INFO L226 Difference]: Without dead ends: 209 [2021-11-07 09:35:22,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:22,662 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 111 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.34ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:22,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 406 Invalid, 11 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 91.34ms Time] [2021-11-07 09:35:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-07 09:35:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 118. [2021-11-07 09:35:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 117 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-11-07 09:35:22,671 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 33 [2021-11-07 09:35:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:22,672 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-11-07 09:35:22,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2021-11-07 09:35:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 09:35:22,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:22,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:22,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 09:35:22,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1779813818, now seen corresponding path program 1 times [2021-11-07 09:35:22,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:22,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130683807] [2021-11-07 09:35:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:22,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:22,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:22,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130683807] [2021-11-07 09:35:22,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130683807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:22,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:22,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:22,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26338021] [2021-11-07 09:35:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:22,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:22,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:22,945 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-07 09:35:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:23,075 INFO L93 Difference]: Finished difference Result 228 states and 271 transitions. [2021-11-07 09:35:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:23,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2021-11-07 09:35:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:23,077 INFO L225 Difference]: With dead ends: 228 [2021-11-07 09:35:23,077 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 09:35:23,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:23,079 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 105 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.85ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:23,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 453 Invalid, 10 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 85.85ms Time] [2021-11-07 09:35:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 09:35:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 120. [2021-11-07 09:35:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2021-11-07 09:35:23,087 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 35 [2021-11-07 09:35:23,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:23,087 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2021-11-07 09:35:23,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-07 09:35:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2021-11-07 09:35:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 09:35:23,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:23,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:23,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 09:35:23,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:23,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 194776032, now seen corresponding path program 1 times [2021-11-07 09:35:23,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:23,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570804547] [2021-11-07 09:35:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:23,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:23,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:23,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570804547] [2021-11-07 09:35:23,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570804547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:23,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:23,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:23,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176538901] [2021-11-07 09:35:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:23,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:23,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:23,410 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:23,472 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2021-11-07 09:35:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:23,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 09:35:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:23,474 INFO L225 Difference]: With dead ends: 141 [2021-11-07 09:35:23,474 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 09:35:23,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:23,475 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.91ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:23,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 408 Invalid, 8 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 28.91ms Time] [2021-11-07 09:35:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 09:35:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-11-07 09:35:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.208695652173913) internal successors, (139), 117 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2021-11-07 09:35:23,481 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 36 [2021-11-07 09:35:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:23,481 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2021-11-07 09:35:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2021-11-07 09:35:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 09:35:23,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:23,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:23,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:35:23,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash -150404056, now seen corresponding path program 1 times [2021-11-07 09:35:23,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:23,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070822839] [2021-11-07 09:35:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:23,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:23,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:23,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243872948] [2021-11-07 09:35:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:23,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:23,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:23,579 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) [2021-11-07 09:35:23,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 09:35:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:24,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:35:24,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:24,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:24,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:24,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070822839] [2021-11-07 09:35:24,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:24,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243872948] [2021-11-07 09:35:24,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243872948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:24,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:24,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:35:24,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568537154] [2021-11-07 09:35:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:24,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:35:24,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:35:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:24,547 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-11-07 09:35:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:24,814 INFO L93 Difference]: Finished difference Result 266 states and 312 transitions. [2021-11-07 09:35:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:35:24,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2021-11-07 09:35:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:24,815 INFO L225 Difference]: With dead ends: 266 [2021-11-07 09:35:24,816 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 09:35:24,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.41ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:35:24,817 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 165 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.60ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:24,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 611 Invalid, 42 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 180.60ms Time] [2021-11-07 09:35:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 09:35:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 121. [2021-11-07 09:35:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 120 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2021-11-07 09:35:24,823 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 43 [2021-11-07 09:35:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:24,824 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2021-11-07 09:35:24,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-11-07 09:35:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2021-11-07 09:35:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:35:24,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:24,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:24,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 09:35:25,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:25,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -393010388, now seen corresponding path program 1 times [2021-11-07 09:35:25,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:25,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735381455] [2021-11-07 09:35:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:25,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:25,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:25,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735381455] [2021-11-07 09:35:25,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735381455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:25,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:25,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:25,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788344013] [2021-11-07 09:35:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:25,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:25,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:25,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:25,428 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-07 09:35:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:25,548 INFO L93 Difference]: Finished difference Result 320 states and 378 transitions. [2021-11-07 09:35:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2021-11-07 09:35:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:25,553 INFO L225 Difference]: With dead ends: 320 [2021-11-07 09:35:25,553 INFO L226 Difference]: Without dead ends: 220 [2021-11-07 09:35:25,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:25,554 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 113 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.57ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:25,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 619 Invalid, 13 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 64.57ms Time] [2021-11-07 09:35:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-07 09:35:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 124. [2021-11-07 09:35:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1983471074380165) internal successors, (145), 123 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2021-11-07 09:35:25,560 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 45 [2021-11-07 09:35:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:25,560 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2021-11-07 09:35:25,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-07 09:35:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2021-11-07 09:35:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:35:25,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:25,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:25,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:35:25,561 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash -902483478, now seen corresponding path program 1 times [2021-11-07 09:35:25,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:25,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299948255] [2021-11-07 09:35:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:25,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:26,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:26,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299948255] [2021-11-07 09:35:26,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299948255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:26,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:26,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:35:26,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756578880] [2021-11-07 09:35:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:26,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:35:26,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:35:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:35:26,078 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-11-07 09:35:28,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:30,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:32,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:33,982 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2021-11-07 09:35:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:35:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-11-07 09:35:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:33,984 INFO L225 Difference]: With dead ends: 157 [2021-11-07 09:35:33,984 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 09:35:33,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 499.75ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:35:33,985 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 83 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7149.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7561.55ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:33,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 659 Invalid, 102 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 3 Unknown, 0 Unchecked, 7561.55ms Time] [2021-11-07 09:35:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 09:35:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-07 09:35:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 125 states have internal predecessors, (147), 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) [2021-11-07 09:35:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2021-11-07 09:35:33,989 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 45 [2021-11-07 09:35:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:33,989 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2021-11-07 09:35:33,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-11-07 09:35:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2021-11-07 09:35:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:35:33,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:33,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:33,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:35:33,990 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 872523884, now seen corresponding path program 1 times [2021-11-07 09:35:33,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:33,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719831602] [2021-11-07 09:35:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:33,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:34,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:34,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719831602] [2021-11-07 09:35:34,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719831602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:34,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:34,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:34,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459616120] [2021-11-07 09:35:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:34,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:34,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:34,391 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-07 09:35:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:34,486 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2021-11-07 09:35:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2021-11-07 09:35:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:34,488 INFO L225 Difference]: With dead ends: 156 [2021-11-07 09:35:34,488 INFO L226 Difference]: Without dead ends: 124 [2021-11-07 09:35:34,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:34,488 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 97 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.15ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:34,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 265 Invalid, 13 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 52.15ms Time] [2021-11-07 09:35:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-07 09:35:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-07 09:35:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2021-11-07 09:35:34,493 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 45 [2021-11-07 09:35:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:34,493 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2021-11-07 09:35:34,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-07 09:35:34,493 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2021-11-07 09:35:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 09:35:34,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:34,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:34,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:35:34,495 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1167810907, now seen corresponding path program 1 times [2021-11-07 09:35:34,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:34,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772202051] [2021-11-07 09:35:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:34,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:34,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:34,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772202051] [2021-11-07 09:35:34,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772202051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:34,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:34,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:35:34,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784899087] [2021-11-07 09:35:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:34,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:35:34,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:35:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:34,845 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-07 09:35:36,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:39,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:39,931 INFO L93 Difference]: Finished difference Result 153 states and 174 transitions. [2021-11-07 09:35:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:35:39,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2021-11-07 09:35:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:39,932 INFO L225 Difference]: With dead ends: 153 [2021-11-07 09:35:39,933 INFO L226 Difference]: Without dead ends: 125 [2021-11-07 09:35:39,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 348.31ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:35:39,933 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 46 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4544.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4831.96ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:39,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 424 Invalid, 61 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 2 Unknown, 0 Unchecked, 4831.96ms Time] [2021-11-07 09:35:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-07 09:35:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-07 09:35:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.165289256198347) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2021-11-07 09:35:39,937 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2021-11-07 09:35:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:39,937 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2021-11-07 09:35:39,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-07 09:35:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2021-11-07 09:35:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 09:35:39,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:39,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:39,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:35:39,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:39,938 INFO L85 PathProgramCache]: Analyzing trace with hash -128406987, now seen corresponding path program 1 times [2021-11-07 09:35:39,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:39,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042926083] [2021-11-07 09:35:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:39,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:40,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:40,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042926083] [2021-11-07 09:35:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042926083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:40,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:40,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:35:40,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704084390] [2021-11-07 09:35:40,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:40,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:35:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:35:40,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:35:40,599 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:42,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:44,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:35:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:46,419 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2021-11-07 09:35:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:35:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 09:35:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:46,420 INFO L225 Difference]: With dead ends: 164 [2021-11-07 09:35:46,420 INFO L226 Difference]: Without dead ends: 128 [2021-11-07 09:35:46,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 555.32ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:35:46,421 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 14 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5112.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5489.18ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:46,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 708 Invalid, 91 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 5489.18ms Time] [2021-11-07 09:35:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-07 09:35:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-11-07 09:35:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.146341463414634) internal successors, (141), 125 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2021-11-07 09:35:46,426 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 48 [2021-11-07 09:35:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:46,426 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2021-11-07 09:35:46,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2021-11-07 09:35:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 09:35:46,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:46,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:46,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:35:46,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:46,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1494937261, now seen corresponding path program 1 times [2021-11-07 09:35:46,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:46,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862767171] [2021-11-07 09:35:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:46,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:46,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:46,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223147497] [2021-11-07 09:35:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:46,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:46,510 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) [2021-11-07 09:35:46,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 09:35:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:47,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 09:35:47,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:47,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:47,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:47,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862767171] [2021-11-07 09:35:47,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:47,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223147497] [2021-11-07 09:35:47,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223147497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:47,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:47,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:47,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025249727] [2021-11-07 09:35:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:47,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:47,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:47,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:47,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:47,475 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-07 09:35:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:47,532 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2021-11-07 09:35:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-07 09:35:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:47,534 INFO L225 Difference]: With dead ends: 201 [2021-11-07 09:35:47,534 INFO L226 Difference]: Without dead ends: 126 [2021-11-07 09:35:47,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:47,534 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 1 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.70ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:47,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 384 Invalid, 8 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 27.70ms Time] [2021-11-07 09:35:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-07 09:35:47,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-07 09:35:47,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1333333333333333) internal successors, (136), 122 states have internal predecessors, (136), 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) [2021-11-07 09:35:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2021-11-07 09:35:47,538 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 61 [2021-11-07 09:35:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:47,539 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2021-11-07 09:35:47,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-07 09:35:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2021-11-07 09:35:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 09:35:47,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:47,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:47,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 09:35:47,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 09:35:47,753 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -810018571, now seen corresponding path program 1 times [2021-11-07 09:35:47,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:47,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276322423] [2021-11-07 09:35:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:47,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:47,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:47,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653479170] [2021-11-07 09:35:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:47,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:47,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:47,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:35:47,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 09:35:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:48,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:35:48,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:48,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:48,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:48,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276322423] [2021-11-07 09:35:48,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:48,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653479170] [2021-11-07 09:35:48,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653479170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:48,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:48,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:35:48,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861686024] [2021-11-07 09:35:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:48,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:35:48,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:35:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:48,762 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2021-11-07 09:35:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:48,959 INFO L93 Difference]: Finished difference Result 240 states and 259 transitions. [2021-11-07 09:35:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:35:48,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2021-11-07 09:35:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:48,961 INFO L225 Difference]: With dead ends: 240 [2021-11-07 09:35:48,961 INFO L226 Difference]: Without dead ends: 200 [2021-11-07 09:35:48,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 120.03ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:35:48,962 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 149 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:48,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 557 Invalid, 40 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 123.66ms Time] [2021-11-07 09:35:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-07 09:35:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 126. [2021-11-07 09:35:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1300813008130082) internal successors, (139), 125 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2021-11-07 09:35:48,966 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 64 [2021-11-07 09:35:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:48,966 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2021-11-07 09:35:48,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2021-11-07 09:35:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2021-11-07 09:35:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 09:35:48,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:48,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:48,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 09:35:49,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:49,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash 536829777, now seen corresponding path program 1 times [2021-11-07 09:35:49,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:49,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397610030] [2021-11-07 09:35:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:49,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:49,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:49,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589475671] [2021-11-07 09:35:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:49,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:49,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:49,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:35:49,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 09:35:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:50,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 09:35:50,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:50,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:50,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:50,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397610030] [2021-11-07 09:35:50,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:50,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589475671] [2021-11-07 09:35:50,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589475671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:50,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:50,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:50,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915034734] [2021-11-07 09:35:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:50,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:50,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:50,249 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-07 09:35:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:50,439 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-11-07 09:35:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:50,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2021-11-07 09:35:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:50,446 INFO L225 Difference]: With dead ends: 166 [2021-11-07 09:35:50,446 INFO L226 Difference]: Without dead ends: 126 [2021-11-07 09:35:50,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:50,447 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.29ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:50,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 379 Invalid, 7 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 146.29ms Time] [2021-11-07 09:35:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-07 09:35:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-07 09:35:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.125) internal successors, (135), 122 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2021-11-07 09:35:50,451 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 66 [2021-11-07 09:35:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:50,451 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2021-11-07 09:35:50,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-07 09:35:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2021-11-07 09:35:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:35:50,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:50,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:50,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 09:35:50,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:50,663 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash -165392724, now seen corresponding path program 1 times [2021-11-07 09:35:50,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:50,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130887245] [2021-11-07 09:35:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:50,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:50,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:50,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499783764] [2021-11-07 09:35:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:50,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:50,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:50,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:35:50,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 09:35:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:51,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 09:35:51,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:51,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:51,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:51,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130887245] [2021-11-07 09:35:51,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:51,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499783764] [2021-11-07 09:35:51,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499783764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:51,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:51,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:35:51,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634245141] [2021-11-07 09:35:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:51,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:35:51,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:35:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:51,787 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2021-11-07 09:35:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:51,908 INFO L93 Difference]: Finished difference Result 251 states and 267 transitions. [2021-11-07 09:35:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:35:51,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2021-11-07 09:35:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:51,910 INFO L225 Difference]: With dead ends: 251 [2021-11-07 09:35:51,911 INFO L226 Difference]: Without dead ends: 210 [2021-11-07 09:35:51,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 145.18ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:35:51,913 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 129 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.71ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:51,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 529 Invalid, 20 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 68.71ms Time] [2021-11-07 09:35:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-07 09:35:51,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 126. [2021-11-07 09:35:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-11-07 09:35:51,918 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 70 [2021-11-07 09:35:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:51,918 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-11-07 09:35:51,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2021-11-07 09:35:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-11-07 09:35:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 09:35:51,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:51,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:51,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 09:35:52,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 09:35:52,153 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:52,153 INFO L85 PathProgramCache]: Analyzing trace with hash 799465288, now seen corresponding path program 1 times [2021-11-07 09:35:52,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:52,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664536752] [2021-11-07 09:35:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:52,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:52,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:52,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585105145] [2021-11-07 09:35:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:52,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:52,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:52,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:35:52,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 09:35:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:52,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 09:35:52,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:53,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:53,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:53,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664536752] [2021-11-07 09:35:53,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:53,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585105145] [2021-11-07 09:35:53,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585105145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:53,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:53,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:35:53,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088582011] [2021-11-07 09:35:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:53,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:35:53,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:35:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:53,199 INFO L87 Difference]: Start difference. First operand 126 states and 138 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) [2021-11-07 09:35:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:53,484 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2021-11-07 09:35:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:35:53,491 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 [2021-11-07 09:35:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:53,492 INFO L225 Difference]: With dead ends: 167 [2021-11-07 09:35:53,492 INFO L226 Difference]: Without dead ends: 121 [2021-11-07 09:35:53,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.74ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:35:53,492 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 3 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:53,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 496 Invalid, 13 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 200.66ms Time] [2021-11-07 09:35:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-07 09:35:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-07 09:35:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1101694915254237) internal successors, (131), 120 states have internal predecessors, (131), 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) [2021-11-07 09:35:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-11-07 09:35:53,496 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 72 [2021-11-07 09:35:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:53,496 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-11-07 09:35:53,496 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) [2021-11-07 09:35:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-11-07 09:35:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 09:35:53,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:53,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:53,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 09:35:53,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 09:35:53,698 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1306943225, now seen corresponding path program 1 times [2021-11-07 09:35:53,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:53,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929106210] [2021-11-07 09:35:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:53,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:53,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:53,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198319799] [2021-11-07 09:35:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:53,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:53,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:53,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:35:53,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 09:35:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:35:54,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 09:35:54,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:35:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:35:54,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:35:54,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:35:54,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929106210] [2021-11-07 09:35:54,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:35:54,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198319799] [2021-11-07 09:35:54,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198319799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:35:54,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:35:54,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:35:54,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139447423] [2021-11-07 09:35:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:35:54,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:35:54,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:35:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:35:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:35:54,765 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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) [2021-11-07 09:35:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:35:54,865 INFO L93 Difference]: Finished difference Result 305 states and 327 transitions. [2021-11-07 09:35:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:35:54,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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 [2021-11-07 09:35:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:35:54,867 INFO L225 Difference]: With dead ends: 305 [2021-11-07 09:35:54,867 INFO L226 Difference]: Without dead ends: 212 [2021-11-07 09:35:54,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:35:54,868 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 205 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.27ms IncrementalHoareTripleChecker+Time [2021-11-07 09:35:54,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 348 Invalid, 8 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 65.27ms Time] [2021-11-07 09:35:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-07 09:35:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 121. [2021-11-07 09:35:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1016949152542372) internal successors, (130), 120 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:35:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2021-11-07 09:35:54,885 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 80 [2021-11-07 09:35:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:35:54,886 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2021-11-07 09:35:54,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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) [2021-11-07 09:35:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2021-11-07 09:35:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 09:35:54,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:35:54,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:35:54,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 09:35:55,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:55,108 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 09:35:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:35:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1199107289, now seen corresponding path program 1 times [2021-11-07 09:35:55,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:35:55,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660250643] [2021-11-07 09:35:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:55,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:35:55,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:35:55,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938728684] [2021-11-07 09:35:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:35:55,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:35:55,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:35:55,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:35:55,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15