./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_unbounded_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 edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:13:24,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:13:24,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:13:24,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:13:24,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:13:24,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:13:24,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:13:24,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:13:24,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:13:24,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:13:24,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:13:24,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:13:24,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:13:24,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:13:24,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:13:24,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:13:24,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:13:24,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:13:24,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:13:24,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:13:24,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:13:24,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:13:24,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:13:24,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:13:24,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:13:24,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:13:24,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:13:24,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:13:24,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:13:24,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:13:24,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:13:24,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:13:24,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:13:24,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:13:24,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:13:24,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:13:24,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:13:24,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:13:24,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:13:24,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:13:24,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:13:24,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:13:24,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:13:24,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:13:24,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:13:24,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:13:24,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:13:24,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:13:24,901 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:13:24,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:13:24,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:13:24,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:13:24,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:13:24,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:13:24,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:13:24,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:13:24,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:13:24,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:13:24,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:13:24,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:13:24,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:13:24,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:13:24,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:13:24,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:13:24,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:13:24,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:13:24,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:13:24,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:13:24,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:13:24,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:13:24,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:13:24,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-03 23:13:25,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:13:25,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:13:25,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:13:25,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:13:25,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:13:25,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-03 23:13:25,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56bd7e9b5/ada723e4bd3749d08bb7ff46ba4fa7f7/FLAG5cd0c0a2f [2021-11-03 23:13:25,904 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:13:25,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-03 23:13:25,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56bd7e9b5/ada723e4bd3749d08bb7ff46ba4fa7f7/FLAG5cd0c0a2f [2021-11-03 23:13:26,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56bd7e9b5/ada723e4bd3749d08bb7ff46ba4fa7f7 [2021-11-03 23:13:26,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:13:26,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:13:26,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:13:26,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:13:26,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:13:26,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:13:26" (1/1) ... [2021-11-03 23:13:26,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30773a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:26, skipping insertion in model container [2021-11-03 23:13:26,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:13:26" (1/1) ... [2021-11-03 23:13:26,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:13:26,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:13:26,411 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_unbounded_harness.i[4503,4516] [2021-11-03 23:13:26,419 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_unbounded_harness.i[4563,4576] [2021-11-03 23:13:26,446 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:13:26,454 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:13:27,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:13:27,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:13:27,527 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:13:27,527 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:13:27,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:13:27,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:13:27,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:13:27,530 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:13:27,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:13:27,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:13:27,713 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:13:27,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:27,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,021 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:13:28,096 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:13:28,119 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_unbounded_harness.i[4503,4516] [2021-11-03 23:13:28,119 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_unbounded_harness.i[4563,4576] [2021-11-03 23:13:28,121 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:13:28,122 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:13:28,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,237 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:13:28,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:13:28,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:13:28,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:13:28,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:13:28,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:13:28,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:13:28,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:13:28,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:13:28,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:13:28,269 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:13:28,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:13:28,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:13:28,612 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:13:28,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28 WrapperNode [2021-11-03 23:13:28,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:13:28,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:13:28,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:13:28,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:13:28,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:13:28,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:13:28,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:13:28,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:13:28,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:13:28,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:13:28,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:13:28,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:13:28,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (1/1) ... [2021-11-03 23:13:28,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:13:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:13:29,001 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) [2021-11-03 23:13:29,024 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 [2021-11-03 23:13:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 23:13:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:13:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:13:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:13:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:13:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:13:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-03 23:13:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:13:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:13:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:13:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:13:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:13:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 23:13:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:13:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:13:34,434 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !true; [2021-11-03 23:13:34,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:13:34,447 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-03 23:13:34,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:13:34 BoogieIcfgContainer [2021-11-03 23:13:34,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:13:34,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:13:34,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:13:34,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:13:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:13:26" (1/3) ... [2021-11-03 23:13:34,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6739a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:13:34, skipping insertion in model container [2021-11-03 23:13:34,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:13:28" (2/3) ... [2021-11-03 23:13:34,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6739a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:13:34, skipping insertion in model container [2021-11-03 23:13:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:13:34" (3/3) ... [2021-11-03 23:13:34,458 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2021-11-03 23:13:34,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:13:34,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 23:13:34,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:13:34,516 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 [2021-11-03 23:13:34,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 23:13:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 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) [2021-11-03 23:13:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 23:13:34,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:34,556 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] [2021-11-03 23:13:34,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1956444402, now seen corresponding path program 1 times [2021-11-03 23:13:34,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:34,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813205111] [2021-11-03 23:13:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:34,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:35,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:35,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813205111] [2021-11-03 23:13:35,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813205111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:35,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:35,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:13:35,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29644996] [2021-11-03 23:13:35,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:35,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:13:35,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:35,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:13:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:13:35,208 INFO L87 Difference]: Start difference. First operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-11-03 23:13:37,283 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 [] [2021-11-03 23:13:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:38,472 INFO L93 Difference]: Finished difference Result 221 states and 294 transitions. [2021-11-03 23:13:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:13:38,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-11-03 23:13:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:38,484 INFO L225 Difference]: With dead ends: 221 [2021-11-03 23:13:38,485 INFO L226 Difference]: Without dead ends: 106 [2021-11-03 23:13:38,489 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 [2021-11-03 23:13:38,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2916.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3199.45ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:38,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 1 Unknown, 0 Unchecked, 3199.45ms Time] [2021-11-03 23:13:38,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-03 23:13:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-03 23:13:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 105 states have internal predecessors, (129), 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) [2021-11-03 23:13:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-03 23:13:38,543 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 31 [2021-11-03 23:13:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:38,544 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-03 23:13:38,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-11-03 23:13:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-03 23:13:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 23:13:38,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:38,545 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] [2021-11-03 23:13:38,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:13:38,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:38,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1279980632, now seen corresponding path program 1 times [2021-11-03 23:13:38,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:38,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092547342] [2021-11-03 23:13:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:38,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:38,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:38,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092547342] [2021-11-03 23:13:38,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092547342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:38,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:38,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:38,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690886215] [2021-11-03 23:13:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:38,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:38,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:38,849 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-03 23:13:40,903 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 [] [2021-11-03 23:13:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:44,557 INFO L93 Difference]: Finished difference Result 281 states and 346 transitions. [2021-11-03 23:13:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:44,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-11-03 23:13:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:44,560 INFO L225 Difference]: With dead ends: 281 [2021-11-03 23:13:44,560 INFO L226 Difference]: Without dead ends: 194 [2021-11-03 23:13:44,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:44,562 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5245.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5590.52ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:44,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 15.38ms Time], IncrementalHoareTripleChecker [2 Valid, 593 Invalid, 1 Unknown, 0 Unchecked, 5590.52ms Time] [2021-11-03 23:13:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-03 23:13:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 109. [2021-11-03 23:13:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 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) [2021-11-03 23:13:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-11-03 23:13:44,573 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 31 [2021-11-03 23:13:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:44,574 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-03 23:13:44,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-03 23:13:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2021-11-03 23:13:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 23:13:44,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:44,576 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] [2021-11-03 23:13:44,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:13:44,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1993918310, now seen corresponding path program 1 times [2021-11-03 23:13:44,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:44,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380434968] [2021-11-03 23:13:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:44,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:44,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380434968] [2021-11-03 23:13:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380434968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:44,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:44,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:44,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974514125] [2021-11-03 23:13:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:44,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:44,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:44,879 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-03 23:13:47,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:49,822 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2021-11-03 23:13:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:49,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-11-03 23:13:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:49,824 INFO L225 Difference]: With dead ends: 279 [2021-11-03 23:13:49,825 INFO L226 Difference]: Without dead ends: 194 [2021-11-03 23:13:49,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:49,826 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4444.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.68ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4848.33ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:49,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 371 Unknown, 0 Unchecked, 10.68ms Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 4848.33ms Time] [2021-11-03 23:13:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-03 23:13:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 109. [2021-11-03 23:13:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 108 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) [2021-11-03 23:13:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-11-03 23:13:49,837 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 31 [2021-11-03 23:13:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:49,838 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-11-03 23:13:49,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-03 23:13:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-11-03 23:13:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 23:13:49,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:49,848 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] [2021-11-03 23:13:49,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:13:49,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1036449013, now seen corresponding path program 1 times [2021-11-03 23:13:49,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:49,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908635136] [2021-11-03 23:13:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:49,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:50,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:50,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908635136] [2021-11-03 23:13:50,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908635136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:50,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:50,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:50,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638203401] [2021-11-03 23:13:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:50,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:50,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:50,151 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-11-03 23:13:52,191 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 [] [2021-11-03 23:13:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:54,617 INFO L93 Difference]: Finished difference Result 275 states and 335 transitions. [2021-11-03 23:13:54,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:54,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-11-03 23:13:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:54,619 INFO L225 Difference]: With dead ends: 275 [2021-11-03 23:13:54,619 INFO L226 Difference]: Without dead ends: 194 [2021-11-03 23:13:54,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:54,621 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3960.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4387.17ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:54,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 382 Unknown, 0 Unchecked, 9.08ms Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 1 Unknown, 0 Unchecked, 4387.17ms Time] [2021-11-03 23:13:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-03 23:13:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2021-11-03 23:13:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 110 states have internal predecessors, (133), 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) [2021-11-03 23:13:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2021-11-03 23:13:54,631 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 32 [2021-11-03 23:13:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:54,632 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2021-11-03 23:13:54,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-11-03 23:13:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2021-11-03 23:13:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 23:13:54,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:54,633 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] [2021-11-03 23:13:54,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 23:13:54,634 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1718799183, now seen corresponding path program 1 times [2021-11-03 23:13:54,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:54,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470171954] [2021-11-03 23:13:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:54,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:54,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:54,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470171954] [2021-11-03 23:13:54,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470171954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:54,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:54,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:54,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414343527] [2021-11-03 23:13:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:54,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:54,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:54,948 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-03 23:13:57,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:13:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:13:59,467 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2021-11-03 23:13:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:13:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-03 23:13:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:13:59,469 INFO L225 Difference]: With dead ends: 205 [2021-11-03 23:13:59,469 INFO L226 Difference]: Without dead ends: 192 [2021-11-03 23:13:59,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:13:59,470 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4063.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4450.92ms IncrementalHoareTripleChecker+Time [2021-11-03 23:13:59,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 412 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 4450.92ms Time] [2021-11-03 23:13:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-03 23:13:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 113. [2021-11-03 23:13:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 112 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) [2021-11-03 23:13:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-11-03 23:13:59,481 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 34 [2021-11-03 23:13:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:13:59,482 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-11-03 23:13:59,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-03 23:13:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2021-11-03 23:13:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 23:13:59,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:13:59,483 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] [2021-11-03 23:13:59,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 23:13:59,484 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:13:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:13:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -216743141, now seen corresponding path program 1 times [2021-11-03 23:13:59,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:13:59,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826166534] [2021-11-03 23:13:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:13:59,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:13:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:13:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:13:59,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:13:59,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826166534] [2021-11-03 23:13:59,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826166534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:13:59,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:13:59,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:13:59,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098512333] [2021-11-03 23:13:59,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:13:59,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:13:59,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:13:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:13:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:13:59,711 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-03 23:14:01,765 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 [] [2021-11-03 23:14:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:04,254 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2021-11-03 23:14:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:14:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-03 23:14:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:04,256 INFO L225 Difference]: With dead ends: 126 [2021-11-03 23:14:04,256 INFO L226 Difference]: Without dead ends: 113 [2021-11-03 23:14:04,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:04,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4087.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4484.69ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:04,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 381 Unknown, 0 Unchecked, 5.17ms Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 4484.69ms Time] [2021-11-03 23:14:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-03 23:14:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-11-03 23:14:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 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) [2021-11-03 23:14:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-11-03 23:14:04,269 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 34 [2021-11-03 23:14:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:04,270 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-11-03 23:14:04,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-03 23:14:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-11-03 23:14:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 23:14:04,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:04,271 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] [2021-11-03 23:14:04,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 23:14:04,272 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash 976987443, now seen corresponding path program 1 times [2021-11-03 23:14:04,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:04,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136079836] [2021-11-03 23:14:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:04,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:04,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:04,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899849274] [2021-11-03 23:14:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:04,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:04,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:04,375 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) [2021-11-03 23:14:04,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:14:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:14:05,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:05,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:05,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:05,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136079836] [2021-11-03 23:14:05,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:05,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899849274] [2021-11-03 23:14:05,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899849274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:05,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:05,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:05,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799205067] [2021-11-03 23:14:05,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:05,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:05,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:05,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:05,544 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-11-03 23:14:07,597 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 [] [2021-11-03 23:14:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:10,891 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2021-11-03 23:14:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:14:10,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2021-11-03 23:14:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:10,893 INFO L225 Difference]: With dead ends: 243 [2021-11-03 23:14:10,893 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 23:14:10,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 179.64ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:14:10,895 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4762.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.98ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5228.27ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:10,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 590 Unknown, 0 Unchecked, 10.98ms Time], IncrementalHoareTripleChecker [6 Valid, 583 Invalid, 1 Unknown, 0 Unchecked, 5228.27ms Time] [2021-11-03 23:14:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 23:14:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2021-11-03 23:14:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 113 states have internal predecessors, (134), 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) [2021-11-03 23:14:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2021-11-03 23:14:10,901 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 42 [2021-11-03 23:14:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:10,901 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2021-11-03 23:14:10,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-11-03 23:14:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2021-11-03 23:14:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 23:14:10,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:10,902 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] [2021-11-03 23:14:10,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 23:14:11,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:11,103 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 698461335, now seen corresponding path program 1 times [2021-11-03 23:14:11,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:11,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259878639] [2021-11-03 23:14:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:11,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:11,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:11,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259878639] [2021-11-03 23:14:11,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259878639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:11,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:11,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:14:11,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445330272] [2021-11-03 23:14:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:11,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:14:11,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:14:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:14:11,832 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-03 23:14:13,889 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 [] [2021-11-03 23:14:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:17,925 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2021-11-03 23:14:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:14:17,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2021-11-03 23:14:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:17,926 INFO L225 Difference]: With dead ends: 139 [2021-11-03 23:14:17,926 INFO L226 Difference]: Without dead ends: 120 [2021-11-03 23:14:17,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 490.78ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:14:17,927 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5329.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5752.09ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:17,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [2 Valid, 695 Invalid, 1 Unknown, 0 Unchecked, 5752.09ms Time] [2021-11-03 23:14:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-03 23:14:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-11-03 23:14:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 115 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) [2021-11-03 23:14:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2021-11-03 23:14:17,935 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 44 [2021-11-03 23:14:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:17,935 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2021-11-03 23:14:17,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-03 23:14:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2021-11-03 23:14:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 23:14:17,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:17,937 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] [2021-11-03 23:14:17,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 23:14:17,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:17,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1821498599, now seen corresponding path program 1 times [2021-11-03 23:14:17,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:17,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058258723] [2021-11-03 23:14:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:17,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:18,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:18,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058258723] [2021-11-03 23:14:18,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058258723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:18,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:18,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:14:18,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534263537] [2021-11-03 23:14:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:18,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:14:18,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:14:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:14:18,235 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-03 23:14:20,293 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 [] [2021-11-03 23:14:22,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:22,390 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2021-11-03 23:14:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:14:22,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-03 23:14:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:22,392 INFO L225 Difference]: With dead ends: 138 [2021-11-03 23:14:22,392 INFO L226 Difference]: Without dead ends: 114 [2021-11-03 23:14:22,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:22,393 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3826.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4099.45ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:22,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 1 Unknown, 0 Unchecked, 4099.45ms Time] [2021-11-03 23:14:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-03 23:14:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-03 23:14:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 113 states have internal predecessors, (132), 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) [2021-11-03 23:14:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2021-11-03 23:14:22,401 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 44 [2021-11-03 23:14:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:22,402 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2021-11-03 23:14:22,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-03 23:14:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2021-11-03 23:14:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 23:14:22,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:22,403 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] [2021-11-03 23:14:22,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 23:14:22,404 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash -258137806, now seen corresponding path program 1 times [2021-11-03 23:14:22,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:22,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039952836] [2021-11-03 23:14:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:22,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:22,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:22,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039952836] [2021-11-03 23:14:22,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039952836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:22,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:22,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:22,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485044250] [2021-11-03 23:14:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:22,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:22,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:22,838 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-03 23:14:24,895 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 [] [2021-11-03 23:14:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:27,869 INFO L93 Difference]: Finished difference Result 135 states and 155 transitions. [2021-11-03 23:14:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:14:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2021-11-03 23:14:27,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:27,871 INFO L225 Difference]: With dead ends: 135 [2021-11-03 23:14:27,871 INFO L226 Difference]: Without dead ends: 115 [2021-11-03 23:14:27,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 421.96ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:14:27,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4349.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4717.93ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:27,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 446 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [8 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 4717.93ms Time] [2021-11-03 23:14:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-03 23:14:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-11-03 23:14:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1607142857142858) internal successors, (130), 113 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) [2021-11-03 23:14:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-11-03 23:14:27,880 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 46 [2021-11-03 23:14:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:27,880 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-11-03 23:14:27,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-03 23:14:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-11-03 23:14:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 23:14:27,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:27,882 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] [2021-11-03 23:14:27,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 23:14:27,882 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1993311935, now seen corresponding path program 1 times [2021-11-03 23:14:27,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:27,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389223319] [2021-11-03 23:14:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:27,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:28,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:28,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389223319] [2021-11-03 23:14:28,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389223319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:28,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:28,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:14:28,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885485262] [2021-11-03 23:14:28,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:28,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:14:28,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:14:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:14:28,468 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-11-03 23:14:30,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:34,962 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2021-11-03 23:14:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 23:14:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2021-11-03 23:14:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:34,963 INFO L225 Difference]: With dead ends: 146 [2021-11-03 23:14:34,963 INFO L226 Difference]: Without dead ends: 118 [2021-11-03 23:14:34,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 512.57ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:14:34,964 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5671.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6153.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:34,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [5 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 6153.49ms Time] [2021-11-03 23:14:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-03 23:14:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-11-03 23:14:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1403508771929824) internal successors, (130), 115 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) [2021-11-03 23:14:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-11-03 23:14:34,972 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 47 [2021-11-03 23:14:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:34,973 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-11-03 23:14:34,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-11-03 23:14:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-11-03 23:14:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 23:14:34,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:34,974 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] [2021-11-03 23:14:34,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 23:14:34,975 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2021436160, now seen corresponding path program 1 times [2021-11-03 23:14:34,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:34,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846324572] [2021-11-03 23:14:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:34,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:35,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:35,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364094691] [2021-11-03 23:14:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:35,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:35,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:35,072 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) [2021-11-03 23:14:35,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:14:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:35,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:14:35,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:36,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:36,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:36,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846324572] [2021-11-03 23:14:36,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:36,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364094691] [2021-11-03 23:14:36,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364094691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:36,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:36,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:14:36,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323297567] [2021-11-03 23:14:36,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:36,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:14:36,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:14:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:14:36,015 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-03 23:14:38,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:41,244 INFO L93 Difference]: Finished difference Result 183 states and 203 transitions. [2021-11-03 23:14:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:14:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-11-03 23:14:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:41,245 INFO L225 Difference]: With dead ends: 183 [2021-11-03 23:14:41,246 INFO L226 Difference]: Without dead ends: 116 [2021-11-03 23:14:41,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:41,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4708.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5170.76ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:41,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 357 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 1 Unknown, 0 Unchecked, 5170.76ms Time] [2021-11-03 23:14:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-03 23:14:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-11-03 23:14:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 112 states have internal predecessors, (125), 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) [2021-11-03 23:14:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-11-03 23:14:41,252 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 60 [2021-11-03 23:14:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:41,253 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-11-03 23:14:41,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-03 23:14:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-11-03 23:14:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 23:14:41,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:41,254 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] [2021-11-03 23:14:41,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:14:41,454 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,SelfDestructingSolverStorable11 [2021-11-03 23:14:41,455 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1218210049, now seen corresponding path program 1 times [2021-11-03 23:14:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:41,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771124923] [2021-11-03 23:14:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:41,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:41,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:41,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239107426] [2021-11-03 23:14:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:41,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:41,563 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) [2021-11-03 23:14:41,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:14:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:42,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:14:42,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:42,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:42,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:42,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771124923] [2021-11-03 23:14:42,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:42,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239107426] [2021-11-03 23:14:42,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239107426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:42,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:42,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:42,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058590360] [2021-11-03 23:14:42,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:42,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:42,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:42,458 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2021-11-03 23:14:44,501 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 [] [2021-11-03 23:14:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:48,723 INFO L93 Difference]: Finished difference Result 214 states and 232 transitions. [2021-11-03 23:14:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:14:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2021-11-03 23:14:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:48,725 INFO L225 Difference]: With dead ends: 214 [2021-11-03 23:14:48,725 INFO L226 Difference]: Without dead ends: 182 [2021-11-03 23:14:48,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.71ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:14:48,726 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5678.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.53ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6163.68ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:48,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 534 Unknown, 0 Unchecked, 6.53ms Time], IncrementalHoareTripleChecker [6 Valid, 527 Invalid, 1 Unknown, 0 Unchecked, 6163.68ms Time] [2021-11-03 23:14:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-03 23:14:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 116. [2021-11-03 23:14:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 115 states have internal predecessors, (128), 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) [2021-11-03 23:14:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-11-03 23:14:48,733 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 63 [2021-11-03 23:14:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:48,733 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-11-03 23:14:48,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2021-11-03 23:14:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-11-03 23:14:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 23:14:48,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:48,734 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] [2021-11-03 23:14:48,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:14:48,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:48,944 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash -250619011, now seen corresponding path program 1 times [2021-11-03 23:14:48,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:48,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144678596] [2021-11-03 23:14:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:48,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:49,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:49,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105400282] [2021-11-03 23:14:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:49,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:49,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:49,018 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) [2021-11-03 23:14:49,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:14:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:49,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:14:49,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:49,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:49,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:49,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144678596] [2021-11-03 23:14:49,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:49,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105400282] [2021-11-03 23:14:49,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105400282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:49,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:14:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901309970] [2021-11-03 23:14:49,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:49,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:14:49,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:49,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:14:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:14:49,984 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-11-03 23:14:52,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:14:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:14:55,064 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2021-11-03 23:14:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:14:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2021-11-03 23:14:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:14:55,065 INFO L225 Difference]: With dead ends: 148 [2021-11-03 23:14:55,065 INFO L226 Difference]: Without dead ends: 116 [2021-11-03 23:14:55,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:55,066 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4471.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5009.32ms IncrementalHoareTripleChecker+Time [2021-11-03 23:14:55,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 5009.32ms Time] [2021-11-03 23:14:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-03 23:14:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-11-03 23:14:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.117117117117117) internal successors, (124), 112 states have internal predecessors, (124), 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) [2021-11-03 23:14:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2021-11-03 23:14:55,073 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 65 [2021-11-03 23:14:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:14:55,073 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2021-11-03 23:14:55,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-11-03 23:14:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2021-11-03 23:14:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 23:14:55,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:14:55,075 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] [2021-11-03 23:14:55,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-03 23:14:55,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:55,284 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:14:55,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:14:55,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1795192040, now seen corresponding path program 1 times [2021-11-03 23:14:55,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:14:55,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077943604] [2021-11-03 23:14:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:55,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:14:55,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:14:55,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757813213] [2021-11-03 23:14:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:14:55,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:14:55,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:14:55,381 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) [2021-11-03 23:14:55,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:14:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:14:56,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 23:14:56,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:14:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:14:56,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:14:56,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:14:56,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077943604] [2021-11-03 23:14:56,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:14:56,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757813213] [2021-11-03 23:14:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757813213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:14:56,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:14:56,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:14:56,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971374188] [2021-11-03 23:14:56,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:14:56,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:14:56,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:14:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:14:56,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:14:56,408 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-11-03 23:14:59,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:15:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:15:03,571 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2021-11-03 23:15:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:15:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2021-11-03 23:15:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:15:03,572 INFO L225 Difference]: With dead ends: 217 [2021-11-03 23:15:03,572 INFO L226 Difference]: Without dead ends: 184 [2021-11-03 23:15:03,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.75ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:15:03,573 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6434.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7075.84ms IncrementalHoareTripleChecker+Time [2021-11-03 23:15:03,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 5.25ms Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 7075.84ms Time] [2021-11-03 23:15:03,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-03 23:15:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 116. [2021-11-03 23:15:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 states have internal predecessors, (127), 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) [2021-11-03 23:15:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2021-11-03 23:15:03,580 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 69 [2021-11-03 23:15:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:15:03,581 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2021-11-03 23:15:03,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-11-03 23:15:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2021-11-03 23:15:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 23:15:03,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:15:03,582 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] [2021-11-03 23:15:03,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 23:15:03,795 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,SelfDestructingSolverStorable14 [2021-11-03 23:15:03,796 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:15:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:15:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2069581868, now seen corresponding path program 1 times [2021-11-03 23:15:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:15:03,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531288041] [2021-11-03 23:15:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:15:03,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:15:03,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:15:03,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126011661] [2021-11-03 23:15:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:15:03,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:15:03,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:15:03,879 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) [2021-11-03 23:15:03,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:15:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:15:04,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 23:15:04,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:15:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:15:04,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:15:04,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:15:04,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531288041] [2021-11-03 23:15:04,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:15:04,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126011661] [2021-11-03 23:15:04,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126011661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:15:04,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:15:04,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:15:04,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170628038] [2021-11-03 23:15:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:15:04,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:15:04,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:15:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:15:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:15:04,945 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-03 23:15:07,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:15:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:15:11,380 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2021-11-03 23:15:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:15:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2021-11-03 23:15:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:15:11,381 INFO L225 Difference]: With dead ends: 149 [2021-11-03 23:15:11,382 INFO L226 Difference]: Without dead ends: 111 [2021-11-03 23:15:11,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 195.51ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:15:11,383 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5730.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6317.37ms IncrementalHoareTripleChecker+Time [2021-11-03 23:15:11,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 462 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [0 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 6317.37ms Time] [2021-11-03 23:15:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-03 23:15:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-03 23:15:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1009174311926606) internal successors, (120), 110 states have internal predecessors, (120), 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) [2021-11-03 23:15:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-11-03 23:15:11,391 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 71 [2021-11-03 23:15:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:15:11,391 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-11-03 23:15:11,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-03 23:15:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-11-03 23:15:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 23:15:11,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:15:11,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:15:11,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:15:11,599 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,SelfDestructingSolverStorable15 [2021-11-03 23:15:11,600 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 23:15:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:15:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1347080187, now seen corresponding path program 1 times [2021-11-03 23:15:11,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:15:11,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976316564] [2021-11-03 23:15:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:15:11,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:15:11,678 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:15:11,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110954942] [2021-11-03 23:15:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:15:11,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:15:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:15:11,680 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) [2021-11-03 23:15:11,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15