./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/systemc/transmitter.10.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:41:33,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:41:33,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:41:33,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:41:33,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:41:33,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:41:33,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:41:33,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:41:33,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:41:33,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:41:33,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:41:33,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:41:33,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:41:33,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:41:33,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:41:33,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:41:33,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:41:33,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:41:33,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:41:33,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:41:33,546 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:41:33,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:41:33,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:41:33,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:41:33,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:41:33,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:41:33,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:41:33,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:41:33,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:41:33,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:41:33,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:41:33,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:41:33,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:41:33,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:41:33,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:41:33,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:41:33,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:41:33,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:41:33,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:41:33,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:41:33,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:41:33,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:41:33,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:41:33,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:41:33,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:41:33,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:41:33,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:41:33,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:41:33,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:41:33,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:41:33,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:41:33,602 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:41:33,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:41:33,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:41:33,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:41:33,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:41:33,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:41:33,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:41:33,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:41:33,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:41:33,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:41:33,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:41:33,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:41:33,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:41:33,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:41:33,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:41:33,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:41:33,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:41:33,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:41:33,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:41:33,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:41:33,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:41:33,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:41:33,606 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:41:33,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:41:33,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:41:33,606 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-07-19 17:41:33,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:41:33,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:41:33,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:41:33,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:41:33,814 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:41:33,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-07-19 17:41:33,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b481f6a/8c2f525ef1bd40a7878c4bbf1febd8b9/FLAGcb5d2e6bc [2022-07-19 17:41:34,260 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:41:34,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-07-19 17:41:34,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b481f6a/8c2f525ef1bd40a7878c4bbf1febd8b9/FLAGcb5d2e6bc [2022-07-19 17:41:34,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b481f6a/8c2f525ef1bd40a7878c4bbf1febd8b9 [2022-07-19 17:41:34,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:41:34,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:41:34,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:41:34,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:41:34,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:41:34,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7ae30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34, skipping insertion in model container [2022-07-19 17:41:34,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:41:34,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:41:34,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-07-19 17:41:34,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:41:34,538 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:41:34,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-07-19 17:41:34,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:41:34,605 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:41:34,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34 WrapperNode [2022-07-19 17:41:34,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:41:34,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:41:34,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:41:34,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:41:34,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,666 INFO L137 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-07-19 17:41:34,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:41:34,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:41:34,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:41:34,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:41:34,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:41:34,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:41:34,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:41:34,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:41:34,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (1/1) ... [2022-07-19 17:41:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:41:34,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:41:34,756 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) [2022-07-19 17:41:34,771 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 [2022-07-19 17:41:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:41:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 17:41:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 17:41:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 17:41:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 17:41:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 17:41:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 17:41:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 17:41:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 17:41:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 17:41:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 17:41:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:41:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 17:41:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 17:41:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:41:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:41:34,891 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:41:34,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:41:35,499 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:41:35,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:41:35,512 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-19 17:41:35,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:41:35 BoogieIcfgContainer [2022-07-19 17:41:35,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:41:35,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:41:35,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:41:35,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:41:35,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:41:34" (1/3) ... [2022-07-19 17:41:35,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e0e5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:41:35, skipping insertion in model container [2022-07-19 17:41:35,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:34" (2/3) ... [2022-07-19 17:41:35,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e0e5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:41:35, skipping insertion in model container [2022-07-19 17:41:35,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:41:35" (3/3) ... [2022-07-19 17:41:35,522 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-07-19 17:41:35,531 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:41:35,532 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:41:35,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:41:35,610 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@240e0618, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5661fae0 [2022-07-19 17:41:35,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:41:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 17:41:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:35,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:35,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:35,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1953724887, now seen corresponding path program 1 times [2022-07-19 17:41:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:35,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923991060] [2022-07-19 17:41:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:35,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:36,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:36,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:36,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923991060] [2022-07-19 17:41:36,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923991060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:36,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:36,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:41:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136397154] [2022-07-19 17:41:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:41:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:41:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:41:36,138 INFO L87 Difference]: Start difference. First operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:37,300 INFO L93 Difference]: Finished difference Result 765 states and 1265 transitions. [2022-07-19 17:41:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:41:37,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:37,312 INFO L225 Difference]: With dead ends: 765 [2022-07-19 17:41:37,312 INFO L226 Difference]: Without dead ends: 441 [2022-07-19 17:41:37,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:41:37,319 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 868 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:37,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 901 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:41:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-19 17:41:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2022-07-19 17:41:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5597269624573378) internal successors, (457), 294 states have internal predecessors, (457), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 17:41:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 503 transitions. [2022-07-19 17:41:37,399 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 503 transitions. Word has length 163 [2022-07-19 17:41:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:37,400 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 503 transitions. [2022-07-19 17:41:37,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 503 transitions. [2022-07-19 17:41:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:37,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:37,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:37,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:41:37,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1342455829, now seen corresponding path program 1 times [2022-07-19 17:41:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:37,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253912687] [2022-07-19 17:41:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:37,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:37,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:37,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253912687] [2022-07-19 17:41:37,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253912687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:37,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:37,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:41:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541803658] [2022-07-19 17:41:37,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:37,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:41:37,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:37,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:41:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:41:37,576 INFO L87 Difference]: Start difference. First operand 323 states and 503 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:38,499 INFO L93 Difference]: Finished difference Result 748 states and 1181 transitions. [2022-07-19 17:41:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:41:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:38,504 INFO L225 Difference]: With dead ends: 748 [2022-07-19 17:41:38,504 INFO L226 Difference]: Without dead ends: 441 [2022-07-19 17:41:38,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:41:38,511 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 855 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:38,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 887 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:41:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-19 17:41:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2022-07-19 17:41:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5563139931740615) internal successors, (456), 294 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 17:41:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 502 transitions. [2022-07-19 17:41:38,548 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 502 transitions. Word has length 163 [2022-07-19 17:41:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:38,548 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 502 transitions. [2022-07-19 17:41:38,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 502 transitions. [2022-07-19 17:41:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:38,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:38,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:38,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:41:38,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:38,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash -19276883, now seen corresponding path program 1 times [2022-07-19 17:41:38,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:38,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749350746] [2022-07-19 17:41:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:38,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:38,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749350746] [2022-07-19 17:41:38,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749350746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:38,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:38,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:41:38,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19956074] [2022-07-19 17:41:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:38,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:41:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:41:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:41:38,717 INFO L87 Difference]: Start difference. First operand 323 states and 502 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:40,589 INFO L93 Difference]: Finished difference Result 1182 states and 1892 transitions. [2022-07-19 17:41:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:41:40,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:40,593 INFO L225 Difference]: With dead ends: 1182 [2022-07-19 17:41:40,594 INFO L226 Difference]: Without dead ends: 877 [2022-07-19 17:41:40,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:41:40,596 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1296 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:40,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1402 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:41:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-19 17:41:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 641. [2022-07-19 17:41:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 586 states have (on average 1.568259385665529) internal successors, (919), 588 states have internal predecessors, (919), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-19 17:41:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1004 transitions. [2022-07-19 17:41:40,634 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1004 transitions. Word has length 163 [2022-07-19 17:41:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:40,636 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1004 transitions. [2022-07-19 17:41:40,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1004 transitions. [2022-07-19 17:41:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:40,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:40,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:41:40,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -951057460, now seen corresponding path program 1 times [2022-07-19 17:41:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405676770] [2022-07-19 17:41:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:40,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:40,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405676770] [2022-07-19 17:41:40,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405676770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:40,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:40,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776179694] [2022-07-19 17:41:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:40,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:40,771 INFO L87 Difference]: Start difference. First operand 641 states and 1004 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:43,686 INFO L93 Difference]: Finished difference Result 2101 states and 3335 transitions. [2022-07-19 17:41:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:43,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:43,695 INFO L225 Difference]: With dead ends: 2101 [2022-07-19 17:41:43,696 INFO L226 Difference]: Without dead ends: 1478 [2022-07-19 17:41:43,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:43,704 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1419 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:43,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2635 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:41:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-19 17:41:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 937. [2022-07-19 17:41:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 857 states have (on average 1.561260210035006) internal successors, (1338), 860 states have internal predecessors, (1338), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-19 17:41:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1461 transitions. [2022-07-19 17:41:43,781 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1461 transitions. Word has length 163 [2022-07-19 17:41:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:43,781 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1461 transitions. [2022-07-19 17:41:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1461 transitions. [2022-07-19 17:41:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:43,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:43,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:41:43,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1491486966, now seen corresponding path program 1 times [2022-07-19 17:41:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:43,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311115505] [2022-07-19 17:41:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:43,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:43,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311115505] [2022-07-19 17:41:43,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311115505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:43,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:43,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753218837] [2022-07-19 17:41:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:43,907 INFO L87 Difference]: Start difference. First operand 937 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:46,784 INFO L93 Difference]: Finished difference Result 3235 states and 5126 transitions. [2022-07-19 17:41:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:46,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:46,798 INFO L225 Difference]: With dead ends: 3235 [2022-07-19 17:41:46,798 INFO L226 Difference]: Without dead ends: 2316 [2022-07-19 17:41:46,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:46,802 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1419 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:46,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2625 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 17:41:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-07-19 17:41:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1530. [2022-07-19 17:41:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1400 states have (on average 1.555) internal successors, (2177), 1405 states have internal predecessors, (2177), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-19 17:41:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2380 transitions. [2022-07-19 17:41:46,895 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2380 transitions. Word has length 163 [2022-07-19 17:41:46,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:46,895 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2380 transitions. [2022-07-19 17:41:46,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2380 transitions. [2022-07-19 17:41:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:46,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:46,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:46,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:41:46,898 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:46,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1647467508, now seen corresponding path program 1 times [2022-07-19 17:41:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:46,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709251488] [2022-07-19 17:41:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:46,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:47,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:47,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:47,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709251488] [2022-07-19 17:41:47,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709251488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:47,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:47,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188362754] [2022-07-19 17:41:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:47,043 INFO L87 Difference]: Start difference. First operand 1530 states and 2380 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:49,928 INFO L93 Difference]: Finished difference Result 5415 states and 8549 transitions. [2022-07-19 17:41:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:49,942 INFO L225 Difference]: With dead ends: 5415 [2022-07-19 17:41:49,942 INFO L226 Difference]: Without dead ends: 3903 [2022-07-19 17:41:49,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:49,946 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 1414 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:49,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2617 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:41:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-07-19 17:41:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 2722. [2022-07-19 17:41:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2492 states have (on average 1.5509630818619582) internal successors, (3865), 2501 states have internal predecessors, (3865), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-19 17:41:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4234 transitions. [2022-07-19 17:41:50,088 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4234 transitions. Word has length 163 [2022-07-19 17:41:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:50,090 INFO L495 AbstractCegarLoop]: Abstraction has 2722 states and 4234 transitions. [2022-07-19 17:41:50,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4234 transitions. [2022-07-19 17:41:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:50,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:50,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:41:50,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash 859629966, now seen corresponding path program 1 times [2022-07-19 17:41:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:50,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96234384] [2022-07-19 17:41:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:50,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:50,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96234384] [2022-07-19 17:41:50,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96234384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:50,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:50,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707187785] [2022-07-19 17:41:50,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:50,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:50,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:50,226 INFO L87 Difference]: Start difference. First operand 2722 states and 4234 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:53,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:53,376 INFO L93 Difference]: Finished difference Result 9785 states and 15429 transitions. [2022-07-19 17:41:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:53,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:53,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:53,400 INFO L225 Difference]: With dead ends: 9785 [2022-07-19 17:41:53,400 INFO L226 Difference]: Without dead ends: 7081 [2022-07-19 17:41:53,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:53,409 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1413 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:53,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 2612 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:41:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2022-07-19 17:41:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 5111. [2022-07-19 17:41:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 4681 states have (on average 1.5481734672078615) internal successors, (7247), 4698 states have internal predecessors, (7247), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-19 17:41:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 7966 transitions. [2022-07-19 17:41:53,701 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 7966 transitions. Word has length 163 [2022-07-19 17:41:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:53,701 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 7966 transitions. [2022-07-19 17:41:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 7966 transitions. [2022-07-19 17:41:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:53,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:53,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:53,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:41:53,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:53,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1276253236, now seen corresponding path program 1 times [2022-07-19 17:41:53,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:53,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61089657] [2022-07-19 17:41:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:53,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:53,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61089657] [2022-07-19 17:41:53,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61089657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:53,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:53,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971829789] [2022-07-19 17:41:53,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:53,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:53,826 INFO L87 Difference]: Start difference. First operand 5111 states and 7966 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:57,150 INFO L93 Difference]: Finished difference Result 18524 states and 29247 transitions. [2022-07-19 17:41:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:57,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:57,206 INFO L225 Difference]: With dead ends: 18524 [2022-07-19 17:41:57,206 INFO L226 Difference]: Without dead ends: 13431 [2022-07-19 17:41:57,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:57,220 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1412 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:57,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2607 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:41:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2022-07-19 17:41:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 9904. [2022-07-19 17:41:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9074 states have (on average 1.5465065020938946) internal successors, (14033), 9107 states have internal predecessors, (14033), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-19 17:41:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 15506 transitions. [2022-07-19 17:41:57,830 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 15506 transitions. Word has length 163 [2022-07-19 17:41:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:57,831 INFO L495 AbstractCegarLoop]: Abstraction has 9904 states and 15506 transitions. [2022-07-19 17:41:57,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 15506 transitions. [2022-07-19 17:41:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:41:57,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:57,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:57,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:41:57,845 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:57,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1206605362, now seen corresponding path program 1 times [2022-07-19 17:41:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:57,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931184129] [2022-07-19 17:41:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:41:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:41:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:41:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:41:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:57,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931184129] [2022-07-19 17:41:57,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931184129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:57,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:57,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:57,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864071936] [2022-07-19 17:41:57,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:57,951 INFO L87 Difference]: Start difference. First operand 9904 states and 15506 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:59,707 INFO L93 Difference]: Finished difference Result 23348 states and 37121 transitions. [2022-07-19 17:41:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:41:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:41:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:59,746 INFO L225 Difference]: With dead ends: 23348 [2022-07-19 17:41:59,746 INFO L226 Difference]: Without dead ends: 13462 [2022-07-19 17:41:59,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:41:59,770 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1082 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:59,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1149 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:41:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2022-07-19 17:42:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 9904. [2022-07-19 17:42:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9074 states have (on average 1.5428697377121445) internal successors, (14000), 9107 states have internal predecessors, (14000), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-19 17:42:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 15473 transitions. [2022-07-19 17:42:00,410 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 15473 transitions. Word has length 163 [2022-07-19 17:42:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:42:00,411 INFO L495 AbstractCegarLoop]: Abstraction has 9904 states and 15473 transitions. [2022-07-19 17:42:00,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 15473 transitions. [2022-07-19 17:42:00,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:42:00,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:42:00,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:42:00,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:42:00,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:42:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:42:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash -788716660, now seen corresponding path program 1 times [2022-07-19 17:42:00,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:42:00,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217017142] [2022-07-19 17:42:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:42:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:42:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:42:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:42:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:42:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:42:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:42:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:42:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:42:00,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217017142] [2022-07-19 17:42:00,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217017142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:42:00,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:42:00,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:42:00,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616680831] [2022-07-19 17:42:00,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:42:00,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:42:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:42:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:42:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:42:00,520 INFO L87 Difference]: Start difference. First operand 9904 states and 15473 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:42:04,956 INFO L93 Difference]: Finished difference Result 35969 states and 56845 transitions. [2022-07-19 17:42:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:42:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:42:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:42:05,048 INFO L225 Difference]: With dead ends: 35969 [2022-07-19 17:42:05,048 INFO L226 Difference]: Without dead ends: 26083 [2022-07-19 17:42:05,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:42:05,081 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1404 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:42:05,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2596 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:42:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26083 states. [2022-07-19 17:42:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26083 to 19554. [2022-07-19 17:42:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19554 states, 17924 states have (on average 1.5409506806516402) internal successors, (27620), 17989 states have internal predecessors, (27620), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-19 17:42:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19554 states to 19554 states and 30763 transitions. [2022-07-19 17:42:06,458 INFO L78 Accepts]: Start accepts. Automaton has 19554 states and 30763 transitions. Word has length 163 [2022-07-19 17:42:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:42:06,458 INFO L495 AbstractCegarLoop]: Abstraction has 19554 states and 30763 transitions. [2022-07-19 17:42:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 19554 states and 30763 transitions. [2022-07-19 17:42:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:42:06,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:42:06,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:42:06,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:42:06,479 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:42:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:42:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 610236942, now seen corresponding path program 1 times [2022-07-19 17:42:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:42:06,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783987101] [2022-07-19 17:42:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:42:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:42:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:42:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:42:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:42:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:06,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:42:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:42:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:42:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:42:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783987101] [2022-07-19 17:42:06,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783987101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:42:06,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:42:06,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:42:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784414862] [2022-07-19 17:42:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:42:06,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:42:06,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:42:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:42:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:42:06,578 INFO L87 Difference]: Start difference. First operand 19554 states and 30763 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:12,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:42:12,933 INFO L93 Difference]: Finished difference Result 70929 states and 112917 transitions. [2022-07-19 17:42:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:42:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:42:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:42:13,134 INFO L225 Difference]: With dead ends: 70929 [2022-07-19 17:42:13,134 INFO L226 Difference]: Without dead ends: 51393 [2022-07-19 17:42:13,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:42:13,190 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1403 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:42:13,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 2591 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:42:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51393 states. [2022-07-19 17:42:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51393 to 38915. [2022-07-19 17:42:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38915 states, 35685 states have (on average 1.539862687403671) internal successors, (54950), 35814 states have internal predecessors, (54950), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-19 17:42:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38915 states to 38915 states and 61919 transitions. [2022-07-19 17:42:15,654 INFO L78 Accepts]: Start accepts. Automaton has 38915 states and 61919 transitions. Word has length 163 [2022-07-19 17:42:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:42:15,655 INFO L495 AbstractCegarLoop]: Abstraction has 38915 states and 61919 transitions. [2022-07-19 17:42:15,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 38915 states and 61919 transitions. [2022-07-19 17:42:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:42:15,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:42:15,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:42:15,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:42:15,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:42:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:42:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1007203508, now seen corresponding path program 1 times [2022-07-19 17:42:15,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:42:15,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952061436] [2022-07-19 17:42:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:42:15,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:42:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:42:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:42:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:42:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:42:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:42:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:42:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:42:15,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952061436] [2022-07-19 17:42:15,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952061436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:42:15,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:42:15,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:42:15,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480719642] [2022-07-19 17:42:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:42:15,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:42:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:42:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:42:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:42:15,807 INFO L87 Difference]: Start difference. First operand 38915 states and 61919 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:25,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:42:25,479 INFO L93 Difference]: Finished difference Result 140848 states and 226907 transitions. [2022-07-19 17:42:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:42:25,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:42:25,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:42:25,821 INFO L225 Difference]: With dead ends: 140848 [2022-07-19 17:42:25,822 INFO L226 Difference]: Without dead ends: 101951 [2022-07-19 17:42:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:42:25,920 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1405 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:42:25,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2584 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:42:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101951 states. [2022-07-19 17:42:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101951 to 77764. [2022-07-19 17:42:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77764 states, 71334 states have (on average 1.5392379510471865) internal successors, (109800), 71591 states have internal predecessors, (109800), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-07-19 17:42:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77764 states to 77764 states and 125879 transitions. [2022-07-19 17:42:31,348 INFO L78 Accepts]: Start accepts. Automaton has 77764 states and 125879 transitions. Word has length 163 [2022-07-19 17:42:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:42:31,349 INFO L495 AbstractCegarLoop]: Abstraction has 77764 states and 125879 transitions. [2022-07-19 17:42:31,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 77764 states and 125879 transitions. [2022-07-19 17:42:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 17:42:31,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:42:31,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:42:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:42:31,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:42:31,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:42:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash -643737010, now seen corresponding path program 1 times [2022-07-19 17:42:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:42:31,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378345178] [2022-07-19 17:42:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:42:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:42:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:42:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:42:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:42:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:42:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 17:42:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:42:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:42:31,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378345178] [2022-07-19 17:42:31,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378345178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:42:31,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:42:31,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:42:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805170173] [2022-07-19 17:42:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:42:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:42:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:42:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:42:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:42:31,528 INFO L87 Difference]: Start difference. First operand 77764 states and 125879 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:42:55,095 INFO L93 Difference]: Finished difference Result 312173 states and 508655 transitions. [2022-07-19 17:42:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:42:55,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-19 17:42:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:42:56,106 INFO L225 Difference]: With dead ends: 312173 [2022-07-19 17:42:56,106 INFO L226 Difference]: Without dead ends: 234427 [2022-07-19 17:42:56,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:42:56,319 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 1730 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:42:56,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 2425 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:42:56,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234427 states.