./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:00:53,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:00:53,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:00:53,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:00:53,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:00:53,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:00:53,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:00:53,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:00:53,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:00:53,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:00:53,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:00:53,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:00:53,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:00:53,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:00:53,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:00:53,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:00:53,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:00:53,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:00:53,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:00:53,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:00:53,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:00:53,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:00:53,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:00:53,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:00:53,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:00:53,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:00:53,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:00:53,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:00:53,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:00:53,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:00:53,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:00:53,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:00:53,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:00:53,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:00:53,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:00:53,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:00:53,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:00:53,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:00:53,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:00:53,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:00:53,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:00:53,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:00:53,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:00:53,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:00:53,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:00:53,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:00:53,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:00:53,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:00:53,176 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:00:53,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:00:53,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:00:53,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:00:53,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:00:53,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:00:53,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:00:53,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:00:53,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:00:53,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:00:53,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:00:53,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:00:53,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:00:53,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:00:53,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:00:53,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:00:53,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:00:53,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:00:53,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:00:53,180 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:00:53,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:00:53,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:00:53,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:00:53,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-11-06 10:00:53,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:00:53,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:00:53,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:00:53,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:00:53,371 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:00:53,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-06 10:00:53,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28c224064/e1cfd7b910eb4d4c8cbe3f4920137093/FLAGa407a8c67 [2021-11-06 10:00:53,978 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:00:53,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-06 10:00:54,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28c224064/e1cfd7b910eb4d4c8cbe3f4920137093/FLAGa407a8c67 [2021-11-06 10:00:54,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28c224064/e1cfd7b910eb4d4c8cbe3f4920137093 [2021-11-06 10:00:54,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:00:54,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:00:54,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:00:54,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:00:54,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:00:54,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:54" (1/1) ... [2021-11-06 10:00:54,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5936d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:54, skipping insertion in model container [2021-11-06 10:00:54,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:54" (1/1) ... [2021-11-06 10:00:54,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:00:54,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:00:54,603 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_array_list_push_back_harness.i[4498,4511] [2021-11-06 10:00:54,608 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_array_list_push_back_harness.i[4558,4571] [2021-11-06 10:00:54,620 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:00:54,624 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:00:55,163 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:00:55,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,233 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:00:55,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:00:55,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:00:55,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:00:55,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:00:55,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:00:55,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:00:55,462 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:00:55,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:00:55,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:00:55,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,591 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:00:55,734 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:00:55,742 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_array_list_push_back_harness.i[4498,4511] [2021-11-06 10:00:55,760 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_array_list_push_back_harness.i[4558,4571] [2021-11-06 10:00:55,762 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:00:55,762 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:00:55,789 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:00:55,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,799 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:00:55,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:00:55,829 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:00:55,830 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:00:55,830 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:00:55,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:00:55,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:00:55,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:00:55,832 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:00:55,832 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:00:55,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:00:55,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:00:56,015 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:00:56,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56 WrapperNode [2021-11-06 10:00:56,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:00:56,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:00:56,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:00:56,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:00:56,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:00:56,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:00:56,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:00:56,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:00:56,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:00:56,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:00:56,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:00:56,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:00:56,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (1/1) ... [2021-11-06 10:00:56,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:00:56,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:00:56,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 10:00:56,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 10:00:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:00:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:00:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:00:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:00:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:00:56,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:00:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 10:00:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:00:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 10:00:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:00:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:00:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:00:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:01:05,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:01:05,557 INFO L299 CfgBuilder]: Removed 512 assume(true) statements. [2021-11-06 10:01:05,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:05 BoogieIcfgContainer [2021-11-06 10:01:05,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:01:05,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:01:05,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:01:05,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:01:05,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:54" (1/3) ... [2021-11-06 10:01:05,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef6ffd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:05, skipping insertion in model container [2021-11-06 10:01:05,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:56" (2/3) ... [2021-11-06 10:01:05,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef6ffd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:05, skipping insertion in model container [2021-11-06 10:01:05,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:05" (3/3) ... [2021-11-06 10:01:05,567 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-11-06 10:01:05,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:01:05,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-06 10:01:05,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:01:05,617 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 10:01:05,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-06 10:01:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 601 states, 577 states have (on average 1.4038128249566724) internal successors, (810), 600 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:01:05,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:05,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:05,643 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1173181215, now seen corresponding path program 1 times [2021-11-06 10:01:05,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:05,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152775867] [2021-11-06 10:01:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:05,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:06,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:06,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152775867] [2021-11-06 10:01:06,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152775867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:06,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:06,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:01:06,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585657657] [2021-11-06 10:01:06,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:01:06,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:01:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:01:06,169 INFO L87 Difference]: Start difference. First operand has 601 states, 577 states have (on average 1.4038128249566724) internal successors, (810), 600 states have internal predecessors, (810), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:06,225 INFO L93 Difference]: Finished difference Result 1198 states and 1615 transitions. [2021-11-06 10:01:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:01:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 10:01:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:06,237 INFO L225 Difference]: With dead ends: 1198 [2021-11-06 10:01:06,237 INFO L226 Difference]: Without dead ends: 596 [2021-11-06 10:01:06,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:01:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-06 10:01:06,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-06 10:01:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 573 states have (on average 1.3089005235602094) internal successors, (750), 595 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 750 transitions. [2021-11-06 10:01:06,327 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 750 transitions. Word has length 53 [2021-11-06 10:01:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:06,327 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 750 transitions. [2021-11-06 10:01:06,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 750 transitions. [2021-11-06 10:01:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:01:06,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:06,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:06,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:01:06,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1286691189, now seen corresponding path program 1 times [2021-11-06 10:01:06,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:06,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187483911] [2021-11-06 10:01:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:06,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:06,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:06,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187483911] [2021-11-06 10:01:06,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187483911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:06,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:06,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 10:01:06,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201003410] [2021-11-06 10:01:06,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 10:01:06,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 10:01:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 10:01:06,596 INFO L87 Difference]: Start difference. First operand 596 states and 750 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:06,660 INFO L93 Difference]: Finished difference Result 1179 states and 1485 transitions. [2021-11-06 10:01:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 10:01:06,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 10:01:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:06,666 INFO L225 Difference]: With dead ends: 1179 [2021-11-06 10:01:06,666 INFO L226 Difference]: Without dead ends: 597 [2021-11-06 10:01:06,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 10:01:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-06 10:01:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-06 10:01:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 574 states have (on average 1.3083623693379791) internal successors, (751), 596 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 751 transitions. [2021-11-06 10:01:06,742 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 751 transitions. Word has length 53 [2021-11-06 10:01:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:06,742 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 751 transitions. [2021-11-06 10:01:06,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 751 transitions. [2021-11-06 10:01:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:01:06,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:06,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:06,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:01:06,749 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1069114061, now seen corresponding path program 1 times [2021-11-06 10:01:06,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:06,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970662470] [2021-11-06 10:01:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:06,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:07,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:07,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970662470] [2021-11-06 10:01:07,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970662470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:07,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:07,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:01:07,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799525106] [2021-11-06 10:01:07,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:01:07,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:01:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:07,049 INFO L87 Difference]: Start difference. First operand 597 states and 751 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:07,887 INFO L93 Difference]: Finished difference Result 1162 states and 1462 transitions. [2021-11-06 10:01:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:01:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 10:01:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:07,890 INFO L225 Difference]: With dead ends: 1162 [2021-11-06 10:01:07,890 INFO L226 Difference]: Without dead ends: 597 [2021-11-06 10:01:07,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:07,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-06 10:01:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-06 10:01:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 574 states have (on average 1.3013937282229966) internal successors, (747), 596 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 747 transitions. [2021-11-06 10:01:07,915 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 747 transitions. Word has length 53 [2021-11-06 10:01:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:07,915 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 747 transitions. [2021-11-06 10:01:07,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 747 transitions. [2021-11-06 10:01:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 10:01:07,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:07,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:07,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:01:07,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1075379847, now seen corresponding path program 1 times [2021-11-06 10:01:07,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:07,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551710740] [2021-11-06 10:01:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:07,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:07,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:07,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040952085] [2021-11-06 10:01:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:07,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:07,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:08,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:01:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:08,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 10:01:08,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:09,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:09,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551710740] [2021-11-06 10:01:09,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:09,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040952085] [2021-11-06 10:01:09,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040952085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:09,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:09,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:01:09,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202402486] [2021-11-06 10:01:09,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:01:09,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:01:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:01:09,320 INFO L87 Difference]: Start difference. First operand 597 states and 747 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:10,455 INFO L93 Difference]: Finished difference Result 1182 states and 1477 transitions. [2021-11-06 10:01:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:01:10,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-06 10:01:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:10,458 INFO L225 Difference]: With dead ends: 1182 [2021-11-06 10:01:10,458 INFO L226 Difference]: Without dead ends: 693 [2021-11-06 10:01:10,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:01:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-11-06 10:01:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 597. [2021-11-06 10:01:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 574 states have (on average 1.2926829268292683) internal successors, (742), 596 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 742 transitions. [2021-11-06 10:01:10,470 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 742 transitions. Word has length 77 [2021-11-06 10:01:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:10,470 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 742 transitions. [2021-11-06 10:01:10,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 742 transitions. [2021-11-06 10:01:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:01:10,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:10,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:10,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:10,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -581583421, now seen corresponding path program 1 times [2021-11-06 10:01:10,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:10,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024117777] [2021-11-06 10:01:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:10,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:10,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:10,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422207910] [2021-11-06 10:01:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:10,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:10,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:10,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 10:01:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:11,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 10:01:11,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:11,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:11,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024117777] [2021-11-06 10:01:11,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:11,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422207910] [2021-11-06 10:01:11,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422207910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:11,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:11,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:01:11,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64659600] [2021-11-06 10:01:11,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:01:11,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:11,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:01:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:11,737 INFO L87 Difference]: Start difference. First operand 597 states and 742 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:12,807 INFO L93 Difference]: Finished difference Result 1283 states and 1614 transitions. [2021-11-06 10:01:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:01:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:01:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:12,811 INFO L225 Difference]: With dead ends: 1283 [2021-11-06 10:01:12,811 INFO L226 Difference]: Without dead ends: 717 [2021-11-06 10:01:12,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:01:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-11-06 10:01:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 645. [2021-11-06 10:01:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 622 states have (on average 1.270096463022508) internal successors, (790), 644 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 790 transitions. [2021-11-06 10:01:12,823 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 790 transitions. Word has length 93 [2021-11-06 10:01:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:12,824 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 790 transitions. [2021-11-06 10:01:12,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 790 transitions. [2021-11-06 10:01:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:01:12,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:12,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:12,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 10:01:13,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:13,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1107360321, now seen corresponding path program 1 times [2021-11-06 10:01:13,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:13,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543480565] [2021-11-06 10:01:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:13,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:13,097 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:13,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625744709] [2021-11-06 10:01:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:13,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:13,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:13,112 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) [2021-11-06 10:01:13,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 10:01:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:14,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-06 10:01:14,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:14,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:14,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543480565] [2021-11-06 10:01:14,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:14,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625744709] [2021-11-06 10:01:14,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625744709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:14,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:14,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:01:14,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63183324] [2021-11-06 10:01:14,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:01:14,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:01:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:14,300 INFO L87 Difference]: Start difference. First operand 645 states and 790 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:14,539 INFO L93 Difference]: Finished difference Result 1218 states and 1494 transitions. [2021-11-06 10:01:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:01:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:01:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:14,541 INFO L225 Difference]: With dead ends: 1218 [2021-11-06 10:01:14,541 INFO L226 Difference]: Without dead ends: 645 [2021-11-06 10:01:14,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:01:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-11-06 10:01:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2021-11-06 10:01:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 622 states have (on average 1.2684887459807075) internal successors, (789), 644 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 789 transitions. [2021-11-06 10:01:14,554 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 789 transitions. Word has length 93 [2021-11-06 10:01:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:14,555 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 789 transitions. [2021-11-06 10:01:14,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 789 transitions. [2021-11-06 10:01:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:01:14,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:14,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:14,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:14,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:14,782 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -831801725, now seen corresponding path program 1 times [2021-11-06 10:01:14,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:14,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527429504] [2021-11-06 10:01:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:14,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:14,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:14,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100588155] [2021-11-06 10:01:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:14,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:14,840 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) [2021-11-06 10:01:14,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 10:01:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:15,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-06 10:01:15,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:16,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:16,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527429504] [2021-11-06 10:01:16,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:16,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100588155] [2021-11-06 10:01:16,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100588155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:16,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:16,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:01:16,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319488696] [2021-11-06 10:01:16,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:01:16,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:01:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:01:16,164 INFO L87 Difference]: Start difference. First operand 645 states and 789 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:16,374 INFO L93 Difference]: Finished difference Result 1535 states and 1877 transitions. [2021-11-06 10:01:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:01:16,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:01:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:16,378 INFO L225 Difference]: With dead ends: 1535 [2021-11-06 10:01:16,378 INFO L226 Difference]: Without dead ends: 936 [2021-11-06 10:01:16,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:01:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-06 10:01:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 645. [2021-11-06 10:01:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 622 states have (on average 1.2668810289389068) internal successors, (788), 644 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 788 transitions. [2021-11-06 10:01:16,395 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 788 transitions. Word has length 93 [2021-11-06 10:01:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:16,395 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 788 transitions. [2021-11-06 10:01:16,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 788 transitions. [2021-11-06 10:01:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:01:16,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:16,396 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:16,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:16,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:16,616 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1678729548, now seen corresponding path program 1 times [2021-11-06 10:01:16,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:16,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464131790] [2021-11-06 10:01:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:16,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:16,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:16,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586850559] [2021-11-06 10:01:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:16,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:16,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:16,671 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) [2021-11-06 10:01:16,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 10:01:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:17,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-06 10:01:17,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:17,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:17,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464131790] [2021-11-06 10:01:17,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:17,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586850559] [2021-11-06 10:01:17,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586850559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:17,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:17,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:01:17,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812075895] [2021-11-06 10:01:17,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:01:17,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:01:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:01:17,928 INFO L87 Difference]: Start difference. First operand 645 states and 788 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:18,401 INFO L93 Difference]: Finished difference Result 1512 states and 1847 transitions. [2021-11-06 10:01:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:01:18,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-06 10:01:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:18,404 INFO L225 Difference]: With dead ends: 1512 [2021-11-06 10:01:18,404 INFO L226 Difference]: Without dead ends: 961 [2021-11-06 10:01:18,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:01:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2021-11-06 10:01:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 645. [2021-11-06 10:01:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 622 states have (on average 1.265273311897106) internal successors, (787), 644 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 787 transitions. [2021-11-06 10:01:18,420 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 787 transitions. Word has length 96 [2021-11-06 10:01:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:18,421 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 787 transitions. [2021-11-06 10:01:18,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 787 transitions. [2021-11-06 10:01:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:01:18,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:18,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:18,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:18,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:18,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:18,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1953489162, now seen corresponding path program 1 times [2021-11-06 10:01:18,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:18,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340437236] [2021-11-06 10:01:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:18,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:18,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:18,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87973864] [2021-11-06 10:01:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:18,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:18,704 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) [2021-11-06 10:01:18,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 10:01:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:19,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-06 10:01:19,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:20,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:20,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340437236] [2021-11-06 10:01:20,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:20,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87973864] [2021-11-06 10:01:20,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87973864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:20,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:20,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:01:20,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335211233] [2021-11-06 10:01:20,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:01:20,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:01:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:01:20,706 INFO L87 Difference]: Start difference. First operand 645 states and 787 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:27,021 INFO L93 Difference]: Finished difference Result 1869 states and 2280 transitions. [2021-11-06 10:01:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:01:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-06 10:01:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:27,025 INFO L225 Difference]: With dead ends: 1869 [2021-11-06 10:01:27,025 INFO L226 Difference]: Without dead ends: 1257 [2021-11-06 10:01:27,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:01:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-11-06 10:01:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1152. [2021-11-06 10:01:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1129 states have (on average 1.2763507528786537) internal successors, (1441), 1151 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1441 transitions. [2021-11-06 10:01:27,071 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1441 transitions. Word has length 96 [2021-11-06 10:01:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:27,071 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1441 transitions. [2021-11-06 10:01:27,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1441 transitions. [2021-11-06 10:01:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:01:27,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:27,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:27,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-06 10:01:27,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:27,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1143199088, now seen corresponding path program 1 times [2021-11-06 10:01:27,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:27,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802980236] [2021-11-06 10:01:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:27,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:27,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:27,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330846353] [2021-11-06 10:01:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:27,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:27,352 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) [2021-11-06 10:01:27,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 10:01:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:28,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-06 10:01:28,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:29,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-06 10:01:29,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-06 10:01:29,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-06 10:01:29,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-06 10:01:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:29,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:29,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802980236] [2021-11-06 10:01:29,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:29,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330846353] [2021-11-06 10:01:29,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330846353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:29,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:29,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:01:29,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769234131] [2021-11-06 10:01:29,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:01:29,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:01:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:01:29,874 INFO L87 Difference]: Start difference. First operand 1152 states and 1441 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:44,112 INFO L93 Difference]: Finished difference Result 3054 states and 3819 transitions. [2021-11-06 10:01:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:01:44,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:01:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:44,118 INFO L225 Difference]: With dead ends: 3054 [2021-11-06 10:01:44,118 INFO L226 Difference]: Without dead ends: 1980 [2021-11-06 10:01:44,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:01:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-11-06 10:01:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1690. [2021-11-06 10:01:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1667 states have (on average 1.2789442111577685) internal successors, (2132), 1689 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2132 transitions. [2021-11-06 10:01:44,178 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2132 transitions. Word has length 98 [2021-11-06 10:01:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:44,179 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 2132 transitions. [2021-11-06 10:01:44,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2132 transitions. [2021-11-06 10:01:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:01:44,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:44,180 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:44,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:44,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:44,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1585010258, now seen corresponding path program 1 times [2021-11-06 10:01:44,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:44,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822260433] [2021-11-06 10:01:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:44,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:44,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:44,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694980464] [2021-11-06 10:01:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:44,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:44,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:44,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:44,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 10:01:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:45,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 10:01:45,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:45,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:45,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822260433] [2021-11-06 10:01:45,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:45,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694980464] [2021-11-06 10:01:45,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694980464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:45,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:45,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:01:45,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494366788] [2021-11-06 10:01:45,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:01:45,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:01:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:01:45,901 INFO L87 Difference]: Start difference. First operand 1690 states and 2132 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:54,154 INFO L93 Difference]: Finished difference Result 4105 states and 5164 transitions. [2021-11-06 10:01:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:01:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:01:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:54,162 INFO L225 Difference]: With dead ends: 4105 [2021-11-06 10:01:54,163 INFO L226 Difference]: Without dead ends: 2476 [2021-11-06 10:01:54,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:01:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-06 10:01:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1759. [2021-11-06 10:01:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1736 states have (on average 1.265552995391705) internal successors, (2197), 1758 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2197 transitions. [2021-11-06 10:01:54,265 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2197 transitions. Word has length 98 [2021-11-06 10:01:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:54,266 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 2197 transitions. [2021-11-06 10:01:54,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2197 transitions. [2021-11-06 10:01:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:01:54,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:54,267 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:54,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-06 10:01:54,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-06 10:01:54,484 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:01:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1344770512, now seen corresponding path program 1 times [2021-11-06 10:01:54,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:54,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504132913] [2021-11-06 10:01:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:54,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:54,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:54,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114358378] [2021-11-06 10:01:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:54,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:54,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:54,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:54,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 10:01:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:55,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-06 10:01:55,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:57,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-11-06 10:01:57,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2021-11-06 10:01:57,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-06 10:01:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:57,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:57,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504132913] [2021-11-06 10:01:57,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:57,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114358378] [2021-11-06 10:01:57,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114358378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:57,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:57,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:01:57,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421274636] [2021-11-06 10:01:57,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:01:57,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:01:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:01:57,563 INFO L87 Difference]: Start difference. First operand 1759 states and 2197 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:18,053 INFO L93 Difference]: Finished difference Result 8505 states and 10627 transitions. [2021-11-06 10:02:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:02:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:02:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:18,074 INFO L225 Difference]: With dead ends: 8505 [2021-11-06 10:02:18,074 INFO L226 Difference]: Without dead ends: 6830 [2021-11-06 10:02:18,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:02:18,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2021-11-06 10:02:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 2764. [2021-11-06 10:02:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2741 states have (on average 1.2725282743524262) internal successors, (3488), 2763 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3488 transitions. [2021-11-06 10:02:18,191 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3488 transitions. Word has length 98 [2021-11-06 10:02:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:18,191 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3488 transitions. [2021-11-06 10:02:18,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3488 transitions. [2021-11-06 10:02:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 10:02:18,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:18,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:18,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 10:02:18,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:02:18,411 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:02:18,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash -781956775, now seen corresponding path program 1 times [2021-11-06 10:02:18,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:18,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19343828] [2021-11-06 10:02:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:18,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:18,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:02:18,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38524834] [2021-11-06 10:02:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:18,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:02:18,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:02:18,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:02:18,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 10:02:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:19,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-06 10:02:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:02:19,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 10:02:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:02:20,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-06 10:02:20,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:02:20,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-06 10:02:20,193 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-06 10:02:20,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-06 10:02:20,318 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 10:02:20,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2021-11-06 10:02:20,354 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 10:02:20,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2021-11-06 10:02:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:20,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:20,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19343828] [2021-11-06 10:02:20,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:02:20,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38524834] [2021-11-06 10:02:20,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38524834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:20,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:20,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:02:20,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127231923] [2021-11-06 10:02:20,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:02:20,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:02:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:02:20,851 INFO L87 Difference]: Start difference. First operand 2764 states and 3488 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:32,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:32,560 INFO L93 Difference]: Finished difference Result 5622 states and 7068 transitions. [2021-11-06 10:02:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:02:32,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 10:02:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:32,568 INFO L225 Difference]: With dead ends: 5622 [2021-11-06 10:02:32,568 INFO L226 Difference]: Without dead ends: 2903 [2021-11-06 10:02:32,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:02:32,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-06 10:02:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2773. [2021-11-06 10:02:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2773 states, 2750 states have (on average 1.272) internal successors, (3498), 2772 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 3498 transitions. [2021-11-06 10:02:32,659 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 3498 transitions. Word has length 101 [2021-11-06 10:02:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:32,659 INFO L470 AbstractCegarLoop]: Abstraction has 2773 states and 3498 transitions. [2021-11-06 10:02:32,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 3498 transitions. [2021-11-06 10:02:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 10:02:32,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:32,661 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:32,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 10:02:32,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 10:02:32,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:02:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1633683303, now seen corresponding path program 1 times [2021-11-06 10:02:32,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:32,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286866888] [2021-11-06 10:02:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:32,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:32,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:02:32,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171275594] [2021-11-06 10:02:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:32,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:02:32,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:02:32,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:02:32,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 10:02:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:34,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-06 10:02:34,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:02:34,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 10:02:34,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:02:34,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-06 10:02:34,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:02:34,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-06 10:02:34,734 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-06 10:02:34,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-06 10:02:34,885 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-06 10:02:34,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 41 [2021-11-06 10:02:34,927 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-06 10:02:34,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2021-11-06 10:02:35,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-06 10:02:35,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-06 10:02:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:35,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:35,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286866888] [2021-11-06 10:02:35,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:02:35,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171275594] [2021-11-06 10:02:35,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171275594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:35,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:35,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:02:35,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380529938] [2021-11-06 10:02:35,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:02:35,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:02:35,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:02:35,822 INFO L87 Difference]: Start difference. First operand 2773 states and 3498 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:44,089 INFO L93 Difference]: Finished difference Result 5459 states and 6898 transitions. [2021-11-06 10:02:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:02:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 10:02:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:44,102 INFO L225 Difference]: With dead ends: 5459 [2021-11-06 10:02:44,102 INFO L226 Difference]: Without dead ends: 2761 [2021-11-06 10:02:44,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:02:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-11-06 10:02:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2760. [2021-11-06 10:02:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2737 states have (on average 1.2725611983924003) internal successors, (3483), 2759 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 3483 transitions. [2021-11-06 10:02:44,193 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 3483 transitions. Word has length 101 [2021-11-06 10:02:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:44,193 INFO L470 AbstractCegarLoop]: Abstraction has 2760 states and 3483 transitions. [2021-11-06 10:02:44,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 3483 transitions. [2021-11-06 10:02:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:02:44,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:44,195 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:44,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 10:02:44,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 10:02:44,419 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:02:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1683824081, now seen corresponding path program 1 times [2021-11-06 10:02:44,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:44,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976712311] [2021-11-06 10:02:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:44,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:44,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:02:44,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855490044] [2021-11-06 10:02:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:44,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:02:44,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:02:44,474 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:02:44,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 10:02:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:45,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-06 10:02:45,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:02:46,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-06 10:02:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:46,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:46,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976712311] [2021-11-06 10:02:46,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:02:46,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855490044] [2021-11-06 10:02:46,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855490044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:46,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:46,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:02:46,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414577080] [2021-11-06 10:02:46,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:02:46,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:02:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:02:46,840 INFO L87 Difference]: Start difference. First operand 2760 states and 3483 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:56,221 INFO L93 Difference]: Finished difference Result 8380 states and 10497 transitions. [2021-11-06 10:02:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:02:56,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-06 10:02:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:56,249 INFO L225 Difference]: With dead ends: 8380 [2021-11-06 10:02:56,249 INFO L226 Difference]: Without dead ends: 5682 [2021-11-06 10:02:56,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:02:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2021-11-06 10:02:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 3318. [2021-11-06 10:02:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3295 states have (on average 1.2707132018209408) internal successors, (4187), 3317 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4187 transitions. [2021-11-06 10:02:56,374 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4187 transitions. Word has length 104 [2021-11-06 10:02:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:56,375 INFO L470 AbstractCegarLoop]: Abstraction has 3318 states and 4187 transitions. [2021-11-06 10:02:56,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4187 transitions. [2021-11-06 10:02:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:02:56,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:56,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:56,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 10:02:56,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 10:02:56,579 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:02:56,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash -117066131, now seen corresponding path program 1 times [2021-11-06 10:02:56,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:56,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765873514] [2021-11-06 10:02:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:56,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:56,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:02:56,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495429325] [2021-11-06 10:02:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:56,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:02:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:02:56,705 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:02:56,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 10:02:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:57,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 10:02:57,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:02:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:58,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:58,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765873514] [2021-11-06 10:02:58,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:02:58,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495429325] [2021-11-06 10:02:58,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495429325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:58,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:58,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:02:58,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899554461] [2021-11-06 10:02:58,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:02:58,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:02:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:02:58,453 INFO L87 Difference]: Start difference. First operand 3318 states and 4187 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:07,830 INFO L93 Difference]: Finished difference Result 7213 states and 9012 transitions. [2021-11-06 10:03:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:03:07,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-06 10:03:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:07,840 INFO L225 Difference]: With dead ends: 7213 [2021-11-06 10:03:07,840 INFO L226 Difference]: Without dead ends: 3970 [2021-11-06 10:03:07,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:03:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-11-06 10:03:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 2769. [2021-11-06 10:03:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2746 states have (on average 1.233430444282593) internal successors, (3387), 2768 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3387 transitions. [2021-11-06 10:03:07,942 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3387 transitions. Word has length 104 [2021-11-06 10:03:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:07,943 INFO L470 AbstractCegarLoop]: Abstraction has 2769 states and 3387 transitions. [2021-11-06 10:03:07,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3387 transitions. [2021-11-06 10:03:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:03:07,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:07,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:07,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 10:03:08,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-06 10:03:08,152 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 10:03:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:08,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1759416687, now seen corresponding path program 1 times [2021-11-06 10:03:08,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:08,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784270622] [2021-11-06 10:03:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:08,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:08,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:03:08,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256494082] [2021-11-06 10:03:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:08,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:03:08,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:03:08,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:03:08,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 10:03:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-06 10:03:09,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:03:09,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-06 10:03:09,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:09,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-06 10:03:10,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-06 10:03:10,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:10,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-11-06 10:03:11,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:11,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-06 10:03:11,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:11,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-06 10:03:11,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:11,979 INFO L354 Elim1Store]: treesize reduction 140, result has 41.4 percent of original size [2021-11-06 10:03:11,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 106 treesize of output 192 [2021-11-06 10:03:12,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:12,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 208 [2021-11-06 10:03:14,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:14,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:14,050 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-06 10:03:14,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 45 [2021-11-06 10:03:14,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:14,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:14,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:14,573 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-06 10:03:14,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 25 [2021-11-06 10:03:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:15,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:15,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:15,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:15,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 10:03:15,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 33 [2021-11-06 10:03:15,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-06 10:03:15,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:15,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:15,600 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-06 10:03:15,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 32 [2021-11-06 10:03:15,772 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-06 10:03:16,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:16,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-11-06 10:03:17,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:17,124 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 10:03:17,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 55 [2021-11-06 10:03:17,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:17,399 INFO L354 Elim1Store]: treesize reduction 83, result has 8.8 percent of original size [2021-11-06 10:03:17,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 86 treesize of output 62 [2021-11-06 10:03:17,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:17,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:17,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:17,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 45 [2021-11-06 10:03:18,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2021-11-06 10:03:19,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:19,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:19,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:19,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:19,142 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-06 10:03:19,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 44 [2021-11-06 10:03:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:19,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:19,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 35 [2021-11-06 10:03:21,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:21,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:21,771 INFO L354 Elim1Store]: treesize reduction 27, result has 30.8 percent of original size [2021-11-06 10:03:21,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 87 [2021-11-06 10:03:22,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:22,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:22,172 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-06 10:03:22,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 43 [2021-11-06 10:03:24,009 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-06 10:03:24,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2021-11-06 10:03:24,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2021-11-06 10:03:24,635 INFO L354 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2021-11-06 10:03:24,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 75 [2021-11-06 10:03:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:27,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:27,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:27,770 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 10:03:27,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 60 [2021-11-06 10:03:27,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2021-11-06 10:03:27,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2021-11-06 10:03:28,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:28,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:28,825 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 10:03:28,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 60 [2021-11-06 10:03:28,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:03:28,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:03:29,014 INFO L354 Elim1Store]: treesize reduction 89, result has 11.9 percent of original size [2021-11-06 10:03:29,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 84 [2021-11-06 10:04:36,616 WARN L207 SmtUtils]: Spent 56.84 s on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2021-11-06 10:04:59,887 WARN L207 SmtUtils]: Spent 20.30 s on a formula simplification that was a NOOP. DAG size: 65 [2021-11-06 10:05:28,536 WARN L207 SmtUtils]: Spent 26.18 s on a formula simplification that was a NOOP. DAG size: 67 [2021-11-06 10:05:30,007 INFO L354 Elim1Store]: treesize reduction 276, result has 40.3 percent of original size [2021-11-06 10:05:30,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 195 treesize of output 317 [2021-11-06 10:05:30,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 317 treesize of output 305 Killed by 15