./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_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_linked_list_end_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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:12:58,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:12:58,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:12:58,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:12:58,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:12:58,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:12:58,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:12:58,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:12:58,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:12:58,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:12:58,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:12:58,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:12:58,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:12:58,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:12:58,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:12:58,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:12:58,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:12:58,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:12:58,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:12:58,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:12:58,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:12:58,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:12:58,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:12:58,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:12:58,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:12:58,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:12:58,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:12:58,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:12:58,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:12:58,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:12:58,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:12:58,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:12:58,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:12:58,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:12:58,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:12:58,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:12:58,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:12:58,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:12:58,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:12:58,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:12:58,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:12:58,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:12:58,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:12:58,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:12:58,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:12:58,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:12:58,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:12:58,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:12:58,218 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:12:58,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:12:58,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:12:58,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:12:58,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:12:58,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:12:58,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:12:58,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:12:58,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:12:58,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:12:58,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:12:58,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:12:58,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:12:58,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:12:58,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:12:58,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:12:58,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:12:58,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:12:58,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:12:58,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:12:58,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:12:58,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:12:58,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:12:58,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-06 11:12:58,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:12:58,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:12:58,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:12:58,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:12:58,446 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:12:58,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-06 11:12:58,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314369c45/270508fd35a5401a83bba229b330bb60/FLAG97738f58c [2021-11-06 11:12:59,051 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:12:59,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-06 11:12:59,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314369c45/270508fd35a5401a83bba229b330bb60/FLAG97738f58c [2021-11-06 11:12:59,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314369c45/270508fd35a5401a83bba229b330bb60 [2021-11-06 11:12:59,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:12:59,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:12:59,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:12:59,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:12:59,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:12:59,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:12:59" (1/1) ... [2021-11-06 11:12:59,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60280620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:59, skipping insertion in model container [2021-11-06 11:12:59,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:12:59" (1/1) ... [2021-11-06 11:12:59,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:12:59,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:12:59,806 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_linked_list_end_harness.i[4493,4506] [2021-11-06 11:12:59,814 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_linked_list_end_harness.i[4553,4566] [2021-11-06 11:12:59,827 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:12:59,830 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:13:00,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:13:00,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:13:00,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:13:00,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:13:00,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:13:00,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:13:00,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:13:00,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:13:00,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:13:00,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:13:00,590 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:13:00,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:13:00,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:13:00,651 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_linked_list_end_harness.i[4493,4506] [2021-11-06 11:13:00,655 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_linked_list_end_harness.i[4553,4566] [2021-11-06 11:13:00,657 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:13:00,658 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:13:00,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:13:00,714 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:13:00,715 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:13:00,716 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:13:00,716 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:13:00,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:13:00,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:13:00,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:13:00,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:13:00,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:13:00,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:13:00,735 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:13:00,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:13:00,852 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:13:00,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00 WrapperNode [2021-11-06 11:13:00,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:13:00,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:13:00,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:13:00,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:13:00,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:00,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:13:01,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:13:01,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:13:01,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:13:01,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:13:01,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:13:01,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:13:01,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:13:01,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (1/1) ... [2021-11-06 11:13:01,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:13:01,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:13:01,092 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 11:13:01,109 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 11:13:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:13:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:13:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:13:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:13:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:13:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:13:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:13:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:13:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:13:01,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:13:01,619 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-06 11:13:01,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:13:01 BoogieIcfgContainer [2021-11-06 11:13:01,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:13:01,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:13:01,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:13:01,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:13:01,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:12:59" (1/3) ... [2021-11-06 11:13:01,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35acae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:13:01, skipping insertion in model container [2021-11-06 11:13:01,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:00" (2/3) ... [2021-11-06 11:13:01,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35acae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:13:01, skipping insertion in model container [2021-11-06 11:13:01,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:13:01" (3/3) ... [2021-11-06 11:13:01,650 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2021-11-06 11:13:01,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:13:01,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 11:13:01,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:13:01,686 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 11:13:01,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 11:13:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:13:01,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:01,721 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] [2021-11-06 11:13:01,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-06 11:13:01,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:01,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717503213] [2021-11-06 11:13:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:01,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:01,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:01,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717503213] [2021-11-06 11:13:01,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717503213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:01,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:01,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:13:01,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063605750] [2021-11-06 11:13:01,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:13:01,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:13:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:13:01,995 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:02,024 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-06 11:13:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:13:02,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-06 11:13:02,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:02,033 INFO L225 Difference]: With dead ends: 224 [2021-11-06 11:13:02,033 INFO L226 Difference]: Without dead ends: 109 [2021-11-06 11:13:02,035 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 11:13:02,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-06 11:13:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-06 11:13:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-06 11:13:02,071 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-06 11:13:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:02,071 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-06 11:13:02,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-06 11:13:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:13:02,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:02,076 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] [2021-11-06 11:13:02,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:13:02,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-06 11:13:02,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:02,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632802711] [2021-11-06 11:13:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:02,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:02,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:02,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632802711] [2021-11-06 11:13:02,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632802711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:02,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:02,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:13:02,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355409782] [2021-11-06 11:13:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:13:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:13:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:13:02,203 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:02,313 INFO L93 Difference]: Finished difference Result 254 states and 367 transitions. [2021-11-06 11:13:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:13:02,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-06 11:13:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:02,315 INFO L225 Difference]: With dead ends: 254 [2021-11-06 11:13:02,316 INFO L226 Difference]: Without dead ends: 157 [2021-11-06 11:13:02,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:13:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-06 11:13:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2021-11-06 11:13:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.424778761061947) internal successors, (161), 116 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2021-11-06 11:13:02,325 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 41 [2021-11-06 11:13:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:02,325 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2021-11-06 11:13:02,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2021-11-06 11:13:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:13:02,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:02,329 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] [2021-11-06 11:13:02,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:13:02,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1037297643, now seen corresponding path program 1 times [2021-11-06 11:13:02,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:02,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262382661] [2021-11-06 11:13:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:02,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:02,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:02,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262382661] [2021-11-06 11:13:02,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262382661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:02,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:02,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:13:02,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311521400] [2021-11-06 11:13:02,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:13:02,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:02,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:13:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:13:02,409 INFO L87 Difference]: Start difference. First operand 117 states and 161 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:02,489 INFO L93 Difference]: Finished difference Result 250 states and 354 transitions. [2021-11-06 11:13:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:13:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-06 11:13:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:02,492 INFO L225 Difference]: With dead ends: 250 [2021-11-06 11:13:02,492 INFO L226 Difference]: Without dead ends: 149 [2021-11-06 11:13:02,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:13:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-06 11:13:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2021-11-06 11:13:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.396694214876033) internal successors, (169), 124 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 169 transitions. [2021-11-06 11:13:02,512 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 169 transitions. Word has length 41 [2021-11-06 11:13:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:02,512 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 169 transitions. [2021-11-06 11:13:02,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 169 transitions. [2021-11-06 11:13:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:13:02,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:02,516 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] [2021-11-06 11:13:02,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:13:02,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 348905751, now seen corresponding path program 1 times [2021-11-06 11:13:02,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:02,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524230706] [2021-11-06 11:13:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:02,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:02,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:02,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524230706] [2021-11-06 11:13:02,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524230706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:02,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:02,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:13:02,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226460847] [2021-11-06 11:13:02,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:13:02,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:13:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:13:02,597 INFO L87 Difference]: Start difference. First operand 125 states and 169 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:02,632 INFO L93 Difference]: Finished difference Result 230 states and 314 transitions. [2021-11-06 11:13:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:13:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-06 11:13:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:02,634 INFO L225 Difference]: With dead ends: 230 [2021-11-06 11:13:02,634 INFO L226 Difference]: Without dead ends: 119 [2021-11-06 11:13:02,635 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 11:13:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-06 11:13:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-06 11:13:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.391304347826087) internal successors, (160), 118 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 160 transitions. [2021-11-06 11:13:02,645 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 160 transitions. Word has length 41 [2021-11-06 11:13:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:02,645 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 160 transitions. [2021-11-06 11:13:02,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 160 transitions. [2021-11-06 11:13:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:13:02,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:02,647 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] [2021-11-06 11:13:02,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:13:02,650 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-06 11:13:02,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:02,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996012851] [2021-11-06 11:13:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:02,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:02,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:02,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996012851] [2021-11-06 11:13:02,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996012851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:02,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:02,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:13:02,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329147689] [2021-11-06 11:13:02,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:13:02,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:02,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:13:02,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:13:02,714 INFO L87 Difference]: Start difference. First operand 119 states and 160 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:02,758 INFO L93 Difference]: Finished difference Result 228 states and 298 transitions. [2021-11-06 11:13:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:13:02,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-06 11:13:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:02,759 INFO L225 Difference]: With dead ends: 228 [2021-11-06 11:13:02,760 INFO L226 Difference]: Without dead ends: 137 [2021-11-06 11:13:02,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:13:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-06 11:13:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-11-06 11:13:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.373913043478261) internal successors, (158), 118 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2021-11-06 11:13:02,763 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 41 [2021-11-06 11:13:02,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:02,764 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2021-11-06 11:13:02,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2021-11-06 11:13:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:13:02,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:02,765 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] [2021-11-06 11:13:02,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 11:13:02,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-06 11:13:02,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:02,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547442928] [2021-11-06 11:13:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:02,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:02,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:02,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547442928] [2021-11-06 11:13:02,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547442928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:02,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:02,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:13:02,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602337174] [2021-11-06 11:13:02,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:13:02,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:13:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:13:02,840 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:02,935 INFO L93 Difference]: Finished difference Result 242 states and 315 transitions. [2021-11-06 11:13:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:13:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 11:13:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:02,936 INFO L225 Difference]: With dead ends: 242 [2021-11-06 11:13:02,936 INFO L226 Difference]: Without dead ends: 152 [2021-11-06 11:13:02,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:13:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-06 11:13:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 119. [2021-11-06 11:13:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 118 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2021-11-06 11:13:02,945 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 45 [2021-11-06 11:13:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:02,945 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2021-11-06 11:13:02,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2021-11-06 11:13:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 11:13:02,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:02,947 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] [2021-11-06 11:13:02,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:13:02,947 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-06 11:13:02,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:02,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304346870] [2021-11-06 11:13:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:02,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:03,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:03,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304346870] [2021-11-06 11:13:03,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304346870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:03,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:03,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:13:03,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302751891] [2021-11-06 11:13:03,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:13:03,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:13:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:13:03,045 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:03,211 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2021-11-06 11:13:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 11:13:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-06 11:13:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:03,213 INFO L225 Difference]: With dead ends: 334 [2021-11-06 11:13:03,213 INFO L226 Difference]: Without dead ends: 243 [2021-11-06 11:13:03,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:13:03,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-06 11:13:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 122. [2021-11-06 11:13:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 121 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 158 transitions. [2021-11-06 11:13:03,218 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 158 transitions. Word has length 49 [2021-11-06 11:13:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:03,218 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 158 transitions. [2021-11-06 11:13:03,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 158 transitions. [2021-11-06 11:13:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 11:13:03,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:03,219 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] [2021-11-06 11:13:03,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 11:13:03,220 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-06 11:13:03,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:03,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185288321] [2021-11-06 11:13:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:03,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:03,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:03,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185288321] [2021-11-06 11:13:03,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185288321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:03,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:03,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:13:03,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870894272] [2021-11-06 11:13:03,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:13:03,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:03,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:13:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:13:03,310 INFO L87 Difference]: Start difference. First operand 122 states and 158 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:03,422 INFO L93 Difference]: Finished difference Result 327 states and 416 transitions. [2021-11-06 11:13:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:13:03,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-06 11:13:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:03,424 INFO L225 Difference]: With dead ends: 327 [2021-11-06 11:13:03,424 INFO L226 Difference]: Without dead ends: 234 [2021-11-06 11:13:03,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:13:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-06 11:13:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 125. [2021-11-06 11:13:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 124 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2021-11-06 11:13:03,428 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 51 [2021-11-06 11:13:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:03,428 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2021-11-06 11:13:03,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2021-11-06 11:13:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 11:13:03,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:03,429 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] [2021-11-06 11:13:03,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:13:03,429 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-06 11:13:03,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:03,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011591839] [2021-11-06 11:13:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:03,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:03,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:03,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011591839] [2021-11-06 11:13:03,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011591839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:03,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:03,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:13:03,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560155097] [2021-11-06 11:13:03,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:13:03,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:13:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:13:03,471 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:03,509 INFO L93 Difference]: Finished difference Result 244 states and 316 transitions. [2021-11-06 11:13:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:13:03,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-06 11:13:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:03,511 INFO L225 Difference]: With dead ends: 244 [2021-11-06 11:13:03,511 INFO L226 Difference]: Without dead ends: 141 [2021-11-06 11:13:03,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:13:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-06 11:13:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2021-11-06 11:13:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.310077519379845) internal successors, (169), 132 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2021-11-06 11:13:03,515 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 61 [2021-11-06 11:13:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:03,515 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2021-11-06 11:13:03,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2021-11-06 11:13:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 11:13:03,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:03,517 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] [2021-11-06 11:13:03,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:13:03,518 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:03,518 INFO L85 PathProgramCache]: Analyzing trace with hash -192730163, now seen corresponding path program 1 times [2021-11-06 11:13:03,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:03,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045611772] [2021-11-06 11:13:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:03,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:03,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:03,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045611772] [2021-11-06 11:13:03,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045611772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:03,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:03,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:13:03,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606499461] [2021-11-06 11:13:03,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:13:03,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:13:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:13:03,590 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:03,801 INFO L93 Difference]: Finished difference Result 362 states and 457 transitions. [2021-11-06 11:13:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 11:13:03,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-06 11:13:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:03,803 INFO L225 Difference]: With dead ends: 362 [2021-11-06 11:13:03,815 INFO L226 Difference]: Without dead ends: 251 [2021-11-06 11:13:03,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-06 11:13:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-06 11:13:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 136. [2021-11-06 11:13:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.303030303030303) internal successors, (172), 135 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 172 transitions. [2021-11-06 11:13:03,820 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 172 transitions. Word has length 61 [2021-11-06 11:13:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:03,820 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 172 transitions. [2021-11-06 11:13:03,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 172 transitions. [2021-11-06 11:13:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 11:13:03,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:03,820 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] [2021-11-06 11:13:03,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:13:03,821 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:03,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:03,821 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-06 11:13:03,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:03,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733965624] [2021-11-06 11:13:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:03,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:13:03,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:03,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733965624] [2021-11-06 11:13:03,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733965624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:03,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:03,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:13:03,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304540619] [2021-11-06 11:13:03,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:13:03,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:13:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:13:03,892 INFO L87 Difference]: Start difference. First operand 136 states and 172 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:03,932 INFO L93 Difference]: Finished difference Result 289 states and 354 transitions. [2021-11-06 11:13:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:13:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-06 11:13:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:03,933 INFO L225 Difference]: With dead ends: 289 [2021-11-06 11:13:03,933 INFO L226 Difference]: Without dead ends: 184 [2021-11-06 11:13:03,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:13:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-06 11:13:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2021-11-06 11:13:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 135 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2021-11-06 11:13:03,937 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 61 [2021-11-06 11:13:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:03,937 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2021-11-06 11:13:03,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2021-11-06 11:13:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 11:13:03,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:03,938 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] [2021-11-06 11:13:03,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 11:13:03,938 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:03,939 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-06 11:13:03,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:03,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537259243] [2021-11-06 11:13:03,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:03,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 11:13:04,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:04,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537259243] [2021-11-06 11:13:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537259243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:13:04,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204579618] [2021-11-06 11:13:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:04,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:13:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:13:04,036 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 11:13:04,037 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 11:13:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:04,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-06 11:13:04,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:13:04,293 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:13:04,293 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-06 11:13:04,317 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-06 11:13:04,317 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-06 11:13:05,237 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-06 11:13:05,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 89 [2021-11-06 11:13:05,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:13:05,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2021-11-06 11:13:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 11:13:05,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204579618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:13:05,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 11:13:05,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2021-11-06 11:13:05,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834050343] [2021-11-06 11:13:05,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 11:13:05,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 11:13:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:13:05,351 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:40,933 INFO L93 Difference]: Finished difference Result 737 states and 891 transitions. [2021-11-06 11:13:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-06 11:13:40,933 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 11:13:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:40,935 INFO L225 Difference]: With dead ends: 737 [2021-11-06 11:13:40,935 INFO L226 Difference]: Without dead ends: 634 [2021-11-06 11:13:40,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=1122, Invalid=3848, Unknown=0, NotChecked=0, Total=4970 [2021-11-06 11:13:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-06 11:13:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 190. [2021-11-06 11:13:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.2849462365591398) internal successors, (239), 189 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2021-11-06 11:13:40,948 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 65 [2021-11-06 11:13:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:40,949 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2021-11-06 11:13:40,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2021-11-06 11:13:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 11:13:40,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:40,950 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] [2021-11-06 11:13:40,967 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 11:13:41,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 11:13:41,159 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1167005937, now seen corresponding path program 1 times [2021-11-06 11:13:41,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:41,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687266994] [2021-11-06 11:13:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:41,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 11:13:41,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:41,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687266994] [2021-11-06 11:13:41,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687266994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:41,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:13:41,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:13:41,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552581486] [2021-11-06 11:13:41,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:13:41,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:13:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:13:41,266 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:13:41,532 INFO L93 Difference]: Finished difference Result 520 states and 662 transitions. [2021-11-06 11:13:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:13:41,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 11:13:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:13:41,533 INFO L225 Difference]: With dead ends: 520 [2021-11-06 11:13:41,533 INFO L226 Difference]: Without dead ends: 357 [2021-11-06 11:13:41,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:13:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-06 11:13:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 310. [2021-11-06 11:13:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 306 states have (on average 1.2908496732026145) internal successors, (395), 309 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 395 transitions. [2021-11-06 11:13:41,549 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 395 transitions. Word has length 65 [2021-11-06 11:13:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:13:41,549 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 395 transitions. [2021-11-06 11:13:41,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:41,550 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 395 transitions. [2021-11-06 11:13:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 11:13:41,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:13:41,550 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:13:41,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 11:13:41,551 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:13:41,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:13:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-06 11:13:41,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:13:41,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059151591] [2021-11-06 11:13:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:41,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:13:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 11:13:41,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:13:41,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059151591] [2021-11-06 11:13:41,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059151591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:13:41,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333502582] [2021-11-06 11:13:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:13:41,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:13:41,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:13:41,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:13:41,859 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 11:13:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:13:42,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-06 11:13:42,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:13:42,089 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-06 11:13:42,090 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-06 11:13:42,111 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-06 11:13:42,111 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-06 11:13:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 11:13:45,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333502582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:13:45,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 11:13:45,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-11-06 11:13:45,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235068479] [2021-11-06 11:13:45,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 11:13:45,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:13:45,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 11:13:45,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=403, Unknown=1, NotChecked=0, Total=462 [2021-11-06 11:13:45,418 INFO L87 Difference]: Start difference. First operand 310 states and 395 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:13:59,329 WARN L207 SmtUtils]: Spent 8.04 s on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-11-06 11:14:07,594 WARN L207 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2021-11-06 11:14:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:14:07,843 INFO L93 Difference]: Finished difference Result 876 states and 1124 transitions. [2021-11-06 11:14:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 11:14:07,843 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 11:14:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:14:07,846 INFO L225 Difference]: With dead ends: 876 [2021-11-06 11:14:07,846 INFO L226 Difference]: Without dead ends: 808 [2021-11-06 11:14:07,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=185, Invalid=806, Unknown=1, NotChecked=0, Total=992 [2021-11-06 11:14:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-11-06 11:14:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 641. [2021-11-06 11:14:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 637 states have (on average 1.2841444270015698) internal successors, (818), 640 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 818 transitions. [2021-11-06 11:14:07,892 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 818 transitions. Word has length 67 [2021-11-06 11:14:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:14:07,893 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 818 transitions. [2021-11-06 11:14:07,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 818 transitions. [2021-11-06 11:14:07,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 11:14:07,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:14:07,895 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:14:07,914 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 11:14:08,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 11:14:08,104 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:14:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:14:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-06 11:14:08,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:14:08,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678178910] [2021-11-06 11:14:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:14:08,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:14:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:14:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 11:14:08,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:14:08,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678178910] [2021-11-06 11:14:08,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678178910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:14:08,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:14:08,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 11:14:08,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519051318] [2021-11-06 11:14:08,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 11:14:08,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:14:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 11:14:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:14:08,288 INFO L87 Difference]: Start difference. First operand 641 states and 818 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:08,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:14:08,654 INFO L93 Difference]: Finished difference Result 917 states and 1177 transitions. [2021-11-06 11:14:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 11:14:08,654 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 11:14:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:14:08,656 INFO L225 Difference]: With dead ends: 917 [2021-11-06 11:14:08,656 INFO L226 Difference]: Without dead ends: 719 [2021-11-06 11:14:08,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:14:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-06 11:14:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 659. [2021-11-06 11:14:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 655 states have (on average 1.2793893129770992) internal successors, (838), 658 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 838 transitions. [2021-11-06 11:14:08,690 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 838 transitions. Word has length 67 [2021-11-06 11:14:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:14:08,690 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 838 transitions. [2021-11-06 11:14:08,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 838 transitions. [2021-11-06 11:14:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 11:14:08,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:14:08,694 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:14:08,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 11:14:08,694 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:14:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:14:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-06 11:14:08,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:14:08,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722249763] [2021-11-06 11:14:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:14:08,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:14:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:14:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 11:14:08,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:14:08,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722249763] [2021-11-06 11:14:08,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722249763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:14:08,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:14:08,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 11:14:08,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931955590] [2021-11-06 11:14:08,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 11:14:08,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:14:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 11:14:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:14:08,922 INFO L87 Difference]: Start difference. First operand 659 states and 838 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:14:09,276 INFO L93 Difference]: Finished difference Result 1267 states and 1640 transitions. [2021-11-06 11:14:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:14:09,278 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 11:14:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:14:09,280 INFO L225 Difference]: With dead ends: 1267 [2021-11-06 11:14:09,281 INFO L226 Difference]: Without dead ends: 1087 [2021-11-06 11:14:09,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:14:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2021-11-06 11:14:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 818. [2021-11-06 11:14:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 814 states have (on average 1.2702702702702702) internal successors, (1034), 817 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1034 transitions. [2021-11-06 11:14:09,320 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1034 transitions. Word has length 67 [2021-11-06 11:14:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:14:09,321 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1034 transitions. [2021-11-06 11:14:09,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:14:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1034 transitions. [2021-11-06 11:14:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 11:14:09,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:14:09,322 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:14:09,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 11:14:09,323 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:14:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:14:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-06 11:14:09,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:14:09,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069859552] [2021-11-06 11:14:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:14:09,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:14:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:14:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 11:14:09,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:14:09,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069859552] [2021-11-06 11:14:09,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069859552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:14:09,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282678154] [2021-11-06 11:14:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:14:09,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:14:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:14:09,479 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 11:14:09,480 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 11:14:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:14:09,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-06 11:14:09,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:14:09,841 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-06 11:14:09,841 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-06 11:14:29,898 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-06 11:14:41,950 WARN L207 SmtUtils]: Spent 10.01 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-06 11:14:53,526 WARN L207 SmtUtils]: Spent 9.43 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-06 11:15:03,591 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-06 11:15:11,638 WARN L207 SmtUtils]: Spent 7.86 s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-06 11:15:19,844 WARN L207 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-06 11:15:25,971 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-06 11:15:34,145 WARN L207 SmtUtils]: Spent 8.03 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-06 11:15:42,418 WARN L207 SmtUtils]: Spent 8.04 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-06 11:15:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 11:15:42,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282678154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:15:42,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 11:15:42,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-11-06 11:15:42,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980227794] [2021-11-06 11:15:42,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-06 11:15:42,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:15:42,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-06 11:15:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=432, Unknown=7, NotChecked=0, Total=506 [2021-11-06 11:15:42,454 INFO L87 Difference]: Start difference. First operand 818 states and 1034 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 23 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:16:04,355 WARN L207 SmtUtils]: Spent 9.78 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-06 11:16:14,390 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-06 11:16:24,472 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 31 [2021-11-06 11:16:44,560 WARN L207 SmtUtils]: Spent 20.07 s on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-11-06 11:16:54,629 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-06 11:17:12,142 WARN L207 SmtUtils]: Spent 17.49 s on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-11-06 11:17:46,000 WARN L207 SmtUtils]: Spent 33.81 s on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-11-06 11:18:18,618 WARN L207 SmtUtils]: Spent 32.60 s on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-11-06 11:18:53,522 WARN L207 SmtUtils]: Spent 34.87 s on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-11-06 11:19:27,437 WARN L207 SmtUtils]: Spent 33.84 s on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-11-06 11:19:59,575 WARN L207 SmtUtils]: Spent 32.11 s on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-11-06 11:20:59,070 WARN L207 SmtUtils]: Spent 59.36 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-11-06 11:21:52,127 WARN L207 SmtUtils]: Spent 53.03 s on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-11-06 11:22:45,067 WARN L207 SmtUtils]: Spent 52.90 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-11-06 11:23:43,053 WARN L207 SmtUtils]: Spent 57.90 s on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-11-06 11:23:50,274 WARN L207 SmtUtils]: Spent 7.21 s on a formula simplification that was a NOOP. DAG size: 33 [2021-11-06 11:24:47,018 WARN L207 SmtUtils]: Spent 56.72 s on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-11-06 11:25:44,450 WARN L207 SmtUtils]: Spent 57.41 s on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-11-06 11:26:36,384 WARN L207 SmtUtils]: Spent 51.89 s on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-11-06 11:26:46,285 WARN L207 SmtUtils]: Spent 9.81 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-06 11:26:55,883 WARN L207 SmtUtils]: Spent 9.56 s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-06 11:27:30,241 WARN L207 SmtUtils]: Spent 34.26 s on a formula simplification. DAG size of input: 55 DAG size of output: 42 Killed by 15