./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f420ae29f1d217fd86475befc2729bf689978fed36c08e1357ee5c24faa0f48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:31:38,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:31:38,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:31:38,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:31:38,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:31:38,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:31:38,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:31:38,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:31:38,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:31:38,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:31:38,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:31:38,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:31:38,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:31:38,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:31:38,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:31:38,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:31:38,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:31:38,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:31:38,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:31:38,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:31:38,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:31:38,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:31:38,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:31:38,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:31:38,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:31:38,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:31:38,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:31:38,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:31:38,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:31:38,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:31:38,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:31:38,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:31:38,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:31:38,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:31:38,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:31:38,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:31:38,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:31:38,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:31:38,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:31:38,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:31:38,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:31:38,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:31:38,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:31:38,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:31:38,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:31:38,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:31:38,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:31:38,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:31:38,751 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:31:38,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:31:38,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:31:38,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:31:38,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:31:38,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:31:38,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:31:38,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:31:38,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:31:38,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:31:38,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:31:38,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:31:38,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:31:38,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:31:38,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:31:38,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:31:38,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:31:38,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:31:38,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:31:38,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:31:38,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:31:38,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:31:38,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:31:38,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f420ae29f1d217fd86475befc2729bf689978fed36c08e1357ee5c24faa0f48 [2021-11-06 15:31:38,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:31:38,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:31:38,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:31:38,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:31:38,963 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:31:38,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:31:39,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560e27af4/24785bc51ca7446cb567f59a75d32a5f/FLAGe8b6716f6 [2021-11-06 15:31:39,633 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:31:39,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:31:39,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560e27af4/24785bc51ca7446cb567f59a75d32a5f/FLAGe8b6716f6 [2021-11-06 15:31:40,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560e27af4/24785bc51ca7446cb567f59a75d32a5f [2021-11-06 15:31:40,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:31:40,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:31:40,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:31:40,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:31:40,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:31:40,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:31:40" (1/1) ... [2021-11-06 15:31:40,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ecb4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:40, skipping insertion in model container [2021-11-06 15:31:40,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:31:40" (1/1) ... [2021-11-06 15:31:40,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:31:40,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:31:41,011 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[238753,238766] [2021-11-06 15:31:41,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:31:41,056 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:31:41,255 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[238753,238766] [2021-11-06 15:31:41,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:31:41,335 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:31:41,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41 WrapperNode [2021-11-06 15:31:41,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:31:41,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:31:41,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:31:41,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:31:41,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:41,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:42,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:31:42,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:31:42,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:31:42,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:31:42,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:42,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:43,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:43,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:43,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:43,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:44,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:44,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:31:44,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:31:44,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:31:44,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:31:44,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (1/1) ... [2021-11-06 15:31:44,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:31:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:31:44,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:31:44,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:31:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:31:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:31:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-06 15:31:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-06 15:31:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 15:31:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 15:31:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-06 15:31:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-06 15:31:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:31:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:31:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-06 15:31:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-06 15:31:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_26 [2021-11-06 15:31:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_26 [2021-11-06 15:31:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:31:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-06 15:31:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-06 15:31:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:31:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-06 15:31:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-06 15:31:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-06 15:31:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-06 15:31:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-11-06 15:31:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-11-06 15:31:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:31:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:31:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-06 15:31:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-06 15:31:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-06 15:31:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-06 15:31:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:31:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-06 15:31:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-06 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-06 15:31:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-06 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-06 15:31:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-06 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-06 15:31:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-06 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:31:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-06 15:31:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-06 15:31:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-06 15:31:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-06 15:31:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-06 15:31:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-06 15:31:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:31:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 15:31:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:31:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:32:05,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:32:05,544 INFO L299 CfgBuilder]: Removed 12856 assume(true) statements. [2021-11-06 15:32:05,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:32:05 BoogieIcfgContainer [2021-11-06 15:32:05,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:32:05,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:32:05,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:32:05,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:32:05,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:31:40" (1/3) ... [2021-11-06 15:32:05,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d3a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:32:05, skipping insertion in model container [2021-11-06 15:32:05,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:41" (2/3) ... [2021-11-06 15:32:05,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d3a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:32:05, skipping insertion in model container [2021-11-06 15:32:05,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:32:05" (3/3) ... [2021-11-06 15:32:05,557 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:32:05,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:32:05,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 15:32:05,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:32:05,623 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:32:05,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 15:32:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 9833 states, 9767 states have (on average 1.4638066960172007) internal successors, (14297), 9777 states have internal predecessors, (14297), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:32:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 15:32:05,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:05,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:05,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -114298510, now seen corresponding path program 1 times [2021-11-06 15:32:05,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:05,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276183027] [2021-11-06 15:32:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:05,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:06,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:06,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276183027] [2021-11-06 15:32:06,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276183027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:06,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:06,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:06,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748065985] [2021-11-06 15:32:06,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:32:06,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:32:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:32:06,105 INFO L87 Difference]: Start difference. First operand has 9833 states, 9767 states have (on average 1.4638066960172007) internal successors, (14297), 9777 states have internal predecessors, (14297), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:06,350 INFO L93 Difference]: Finished difference Result 19662 states and 28781 transitions. [2021-11-06 15:32:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:32:06,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 15:32:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:06,401 INFO L225 Difference]: With dead ends: 19662 [2021-11-06 15:32:06,401 INFO L226 Difference]: Without dead ends: 9820 [2021-11-06 15:32:06,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:32:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2021-11-06 15:32:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9820. [2021-11-06 15:32:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9820 states, 9755 states have (on average 1.46099436186571) internal successors, (14252), 9764 states have internal predecessors, (14252), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:32:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9820 states to 9820 states and 14332 transitions. [2021-11-06 15:32:06,691 INFO L78 Accepts]: Start accepts. Automaton has 9820 states and 14332 transitions. Word has length 48 [2021-11-06 15:32:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:06,691 INFO L470 AbstractCegarLoop]: Abstraction has 9820 states and 14332 transitions. [2021-11-06 15:32:06,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 9820 states and 14332 transitions. [2021-11-06 15:32:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 15:32:06,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:06,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:06,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:32:06,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1789979514, now seen corresponding path program 1 times [2021-11-06 15:32:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:06,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608593757] [2021-11-06 15:32:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:06,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:06,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:06,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608593757] [2021-11-06 15:32:06,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608593757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:06,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:06,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:06,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88086036] [2021-11-06 15:32:06,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:06,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:06,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:06,968 INFO L87 Difference]: Start difference. First operand 9820 states and 14332 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:13,471 INFO L93 Difference]: Finished difference Result 29402 states and 43087 transitions. [2021-11-06 15:32:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 15:32:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:13,547 INFO L225 Difference]: With dead ends: 29402 [2021-11-06 15:32:13,548 INFO L226 Difference]: Without dead ends: 19610 [2021-11-06 15:32:13,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19610 states. [2021-11-06 15:32:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19610 to 19598. [2021-11-06 15:32:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19598 states, 19473 states have (on average 1.4278231397319365) internal successors, (27804), 19487 states have internal predecessors, (27804), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (152), 74 states have call predecessors, (152), 80 states have call successors, (152) [2021-11-06 15:32:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19598 states to 19598 states and 28036 transitions. [2021-11-06 15:32:14,079 INFO L78 Accepts]: Start accepts. Automaton has 19598 states and 28036 transitions. Word has length 48 [2021-11-06 15:32:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:14,080 INFO L470 AbstractCegarLoop]: Abstraction has 19598 states and 28036 transitions. [2021-11-06 15:32:14,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19598 states and 28036 transitions. [2021-11-06 15:32:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 15:32:14,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:14,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:14,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:32:14,087 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash -345166374, now seen corresponding path program 1 times [2021-11-06 15:32:14,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:14,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379736180] [2021-11-06 15:32:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:14,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:14,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:14,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379736180] [2021-11-06 15:32:14,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379736180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:14,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:14,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:14,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926322663] [2021-11-06 15:32:14,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:14,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:14,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:14,294 INFO L87 Difference]: Start difference. First operand 19598 states and 28036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:18,768 INFO L93 Difference]: Finished difference Result 58080 states and 83191 transitions. [2021-11-06 15:32:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:18,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 15:32:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:18,870 INFO L225 Difference]: With dead ends: 58080 [2021-11-06 15:32:18,870 INFO L226 Difference]: Without dead ends: 38510 [2021-11-06 15:32:18,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38510 states. [2021-11-06 15:32:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38510 to 38499. [2021-11-06 15:32:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38499 states, 38254 states have (on average 1.4011345218800648) internal successors, (53599), 38278 states have internal predecessors, (53599), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:32:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 54215 transitions. [2021-11-06 15:32:19,780 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 54215 transitions. Word has length 49 [2021-11-06 15:32:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:19,781 INFO L470 AbstractCegarLoop]: Abstraction has 38499 states and 54215 transitions. [2021-11-06 15:32:19,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 54215 transitions. [2021-11-06 15:32:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 15:32:19,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:19,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:19,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:32:19,785 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:19,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2110179452, now seen corresponding path program 1 times [2021-11-06 15:32:19,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:19,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363185649] [2021-11-06 15:32:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:19,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:19,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:19,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363185649] [2021-11-06 15:32:19,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363185649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:19,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:19,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:19,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992308802] [2021-11-06 15:32:19,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:19,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:19,917 INFO L87 Difference]: Start difference. First operand 38499 states and 54215 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:21,914 INFO L93 Difference]: Finished difference Result 38504 states and 54219 transitions. [2021-11-06 15:32:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:21,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-06 15:32:21,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:22,014 INFO L225 Difference]: With dead ends: 38504 [2021-11-06 15:32:22,014 INFO L226 Difference]: Without dead ends: 38502 [2021-11-06 15:32:22,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38502 states. [2021-11-06 15:32:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38502 to 38500. [2021-11-06 15:32:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38500 states, 38255 states have (on average 1.4011240360737158) internal successors, (53600), 38279 states have internal predecessors, (53600), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:32:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38500 states to 38500 states and 54216 transitions. [2021-11-06 15:32:22,813 INFO L78 Accepts]: Start accepts. Automaton has 38500 states and 54216 transitions. Word has length 50 [2021-11-06 15:32:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:22,814 INFO L470 AbstractCegarLoop]: Abstraction has 38500 states and 54216 transitions. [2021-11-06 15:32:22,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38500 states and 54216 transitions. [2021-11-06 15:32:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 15:32:22,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:22,817 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:22,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:32:22,817 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -991010012, now seen corresponding path program 1 times [2021-11-06 15:32:22,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:22,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305955188] [2021-11-06 15:32:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:22,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:22,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:22,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305955188] [2021-11-06 15:32:22,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305955188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:22,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:22,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:22,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686109068] [2021-11-06 15:32:22,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:22,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:22,929 INFO L87 Difference]: Start difference. First operand 38500 states and 54216 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:23,491 INFO L93 Difference]: Finished difference Result 38500 states and 54216 transitions. [2021-11-06 15:32:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 15:32:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:23,585 INFO L225 Difference]: With dead ends: 38500 [2021-11-06 15:32:23,585 INFO L226 Difference]: Without dead ends: 38498 [2021-11-06 15:32:23,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38498 states. [2021-11-06 15:32:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38498 to 38498. [2021-11-06 15:32:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38498 states, 38254 states have (on average 1.4011083808229206) internal successors, (53598), 38277 states have internal predecessors, (53598), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:32:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38498 states to 38498 states and 54214 transitions. [2021-11-06 15:32:24,374 INFO L78 Accepts]: Start accepts. Automaton has 38498 states and 54214 transitions. Word has length 51 [2021-11-06 15:32:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:24,375 INFO L470 AbstractCegarLoop]: Abstraction has 38498 states and 54214 transitions. [2021-11-06 15:32:24,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 38498 states and 54214 transitions. [2021-11-06 15:32:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 15:32:24,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:24,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:24,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:32:24,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash -656495730, now seen corresponding path program 1 times [2021-11-06 15:32:24,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:24,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330574621] [2021-11-06 15:32:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:24,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:24,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:24,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330574621] [2021-11-06 15:32:24,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330574621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:24,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:24,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:24,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191584441] [2021-11-06 15:32:24,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:24,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:24,489 INFO L87 Difference]: Start difference. First operand 38498 states and 54214 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:25,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:25,018 INFO L93 Difference]: Finished difference Result 38498 states and 54214 transitions. [2021-11-06 15:32:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:25,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-06 15:32:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:25,203 INFO L225 Difference]: With dead ends: 38498 [2021-11-06 15:32:25,204 INFO L226 Difference]: Without dead ends: 33461 [2021-11-06 15:32:25,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33461 states. [2021-11-06 15:32:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33461 to 33461. [2021-11-06 15:32:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33461 states, 33218 states have (on average 1.394605334457222) internal successors, (46326), 33240 states have internal predecessors, (46326), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:32:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 46942 transitions. [2021-11-06 15:32:26,080 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 46942 transitions. Word has length 52 [2021-11-06 15:32:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:26,080 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 46942 transitions. [2021-11-06 15:32:26,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 46942 transitions. [2021-11-06 15:32:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 15:32:26,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:26,096 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:26,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:32:26,097 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:26,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:26,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1833350465, now seen corresponding path program 1 times [2021-11-06 15:32:26,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:26,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103196452] [2021-11-06 15:32:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:26,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:26,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:26,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103196452] [2021-11-06 15:32:26,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103196452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:26,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:26,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:32:26,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885672027] [2021-11-06 15:32:26,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:26,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:26,210 INFO L87 Difference]: Start difference. First operand 33461 states and 46942 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:27,172 INFO L93 Difference]: Finished difference Result 80474 states and 113261 transitions. [2021-11-06 15:32:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:27,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 15:32:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:27,301 INFO L225 Difference]: With dead ends: 80474 [2021-11-06 15:32:27,301 INFO L226 Difference]: Without dead ends: 47041 [2021-11-06 15:32:27,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47041 states. [2021-11-06 15:32:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47041 to 47023. [2021-11-06 15:32:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47023 states, 46540 states have (on average 1.3987107864202837) internal successors, (65096), 46582 states have internal predecessors, (65096), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (912), 296 states have call predecessors, (912), 320 states have call successors, (912) [2021-11-06 15:32:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47023 states to 47023 states and 66328 transitions. [2021-11-06 15:32:28,427 INFO L78 Accepts]: Start accepts. Automaton has 47023 states and 66328 transitions. Word has length 82 [2021-11-06 15:32:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:28,428 INFO L470 AbstractCegarLoop]: Abstraction has 47023 states and 66328 transitions. [2021-11-06 15:32:28,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 47023 states and 66328 transitions. [2021-11-06 15:32:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 15:32:28,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:28,455 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:28,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:32:28,456 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1956077323, now seen corresponding path program 1 times [2021-11-06 15:32:28,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:28,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042509374] [2021-11-06 15:32:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:28,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:32:28,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:28,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042509374] [2021-11-06 15:32:28,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042509374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:28,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:28,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:32:28,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576660457] [2021-11-06 15:32:28,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:32:28,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:32:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:32:28,554 INFO L87 Difference]: Start difference. First operand 47023 states and 66328 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:30,287 INFO L93 Difference]: Finished difference Result 115072 states and 162015 transitions. [2021-11-06 15:32:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:32:30,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-06 15:32:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:30,458 INFO L225 Difference]: With dead ends: 115072 [2021-11-06 15:32:30,458 INFO L226 Difference]: Without dead ends: 68077 [2021-11-06 15:32:30,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:32:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68077 states. [2021-11-06 15:32:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68077 to 47037. [2021-11-06 15:32:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47037 states, 46554 states have (on average 1.3985908837049448) internal successors, (65110), 46596 states have internal predecessors, (65110), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (912), 296 states have call predecessors, (912), 320 states have call successors, (912) [2021-11-06 15:32:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47037 states to 47037 states and 66342 transitions. [2021-11-06 15:32:31,928 INFO L78 Accepts]: Start accepts. Automaton has 47037 states and 66342 transitions. Word has length 109 [2021-11-06 15:32:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:31,928 INFO L470 AbstractCegarLoop]: Abstraction has 47037 states and 66342 transitions. [2021-11-06 15:32:31,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 47037 states and 66342 transitions. [2021-11-06 15:32:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 15:32:31,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:31,955 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:32:31,955 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1080330172, now seen corresponding path program 1 times [2021-11-06 15:32:31,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:31,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408464552] [2021-11-06 15:32:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:31,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:32:32,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:32,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408464552] [2021-11-06 15:32:32,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408464552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:32,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:32,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:32:32,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096212879] [2021-11-06 15:32:32,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:32,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:32,110 INFO L87 Difference]: Start difference. First operand 47037 states and 66342 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:35,613 INFO L93 Difference]: Finished difference Result 108358 states and 153500 transitions. [2021-11-06 15:32:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:35,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-06 15:32:35,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:35,895 INFO L225 Difference]: With dead ends: 108358 [2021-11-06 15:32:35,896 INFO L226 Difference]: Without dead ends: 61349 [2021-11-06 15:32:35,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61349 states. [2021-11-06 15:32:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61349 to 61349. [2021-11-06 15:32:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61349 states, 60386 states have (on average 1.4027754777597456) internal successors, (84708), 60468 states have internal predecessors, (84708), 640 states have call successors, (640), 320 states have call predecessors, (640), 320 states have return successors, (1824), 592 states have call predecessors, (1824), 640 states have call successors, (1824) [2021-11-06 15:32:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61349 states to 61349 states and 87172 transitions. [2021-11-06 15:32:37,581 INFO L78 Accepts]: Start accepts. Automaton has 61349 states and 87172 transitions. Word has length 113 [2021-11-06 15:32:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:37,581 INFO L470 AbstractCegarLoop]: Abstraction has 61349 states and 87172 transitions. [2021-11-06 15:32:37,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 61349 states and 87172 transitions. [2021-11-06 15:32:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 15:32:37,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:37,646 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:37,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:32:37,646 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1230120683, now seen corresponding path program 1 times [2021-11-06 15:32:37,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:37,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199627415] [2021-11-06 15:32:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:37,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-06 15:32:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:32:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:32:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:32:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:37,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:37,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199627415] [2021-11-06 15:32:37,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199627415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:37,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:37,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:32:37,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113096066] [2021-11-06 15:32:37,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:32:37,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:32:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:32:37,901 INFO L87 Difference]: Start difference. First operand 61349 states and 87172 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:33:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:19,285 INFO L93 Difference]: Finished difference Result 123623 states and 175467 transitions. [2021-11-06 15:33:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:33:19,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2021-11-06 15:33:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:19,464 INFO L225 Difference]: With dead ends: 123623 [2021-11-06 15:33:19,464 INFO L226 Difference]: Without dead ends: 62302 [2021-11-06 15:33:19,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62302 states. [2021-11-06 15:33:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62302 to 61765. [2021-11-06 15:33:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61765 states, 60666 states have (on average 1.4009164935878415) internal successors, (84988), 60808 states have internal predecessors, (84988), 624 states have call successors, (624), 320 states have call predecessors, (624), 472 states have return successors, (2020), 684 states have call predecessors, (2020), 624 states have call successors, (2020) [2021-11-06 15:33:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61765 states to 61765 states and 87632 transitions. [2021-11-06 15:33:21,590 INFO L78 Accepts]: Start accepts. Automaton has 61765 states and 87632 transitions. Word has length 134 [2021-11-06 15:33:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:21,590 INFO L470 AbstractCegarLoop]: Abstraction has 61765 states and 87632 transitions. [2021-11-06 15:33:21,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:33:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 61765 states and 87632 transitions. [2021-11-06 15:33:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 15:33:21,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:21,645 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:21,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:33:21,650 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:33:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1220706110, now seen corresponding path program 1 times [2021-11-06 15:33:21,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:21,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039203302] [2021-11-06 15:33:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:21,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-06 15:33:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:33:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:33:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:33:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:21,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:21,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039203302] [2021-11-06 15:33:21,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039203302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:21,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:21,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:33:21,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619668457] [2021-11-06 15:33:21,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:33:21,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:21,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:33:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:33:21,882 INFO L87 Difference]: Start difference. First operand 61765 states and 87632 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:34:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:34:12,539 INFO L93 Difference]: Finished difference Result 124007 states and 175831 transitions. [2021-11-06 15:34:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:34:12,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 135 [2021-11-06 15:34:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:34:12,738 INFO L225 Difference]: With dead ends: 124007 [2021-11-06 15:34:12,738 INFO L226 Difference]: Without dead ends: 62270 [2021-11-06 15:34:12,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:34:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62270 states. [2021-11-06 15:34:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62270 to 61733. [2021-11-06 15:34:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61733 states, 60650 states have (on average 1.4007584501236603) internal successors, (84956), 60792 states have internal predecessors, (84956), 608 states have call successors, (608), 320 states have call predecessors, (608), 472 states have return successors, (1972), 668 states have call predecessors, (1972), 608 states have call successors, (1972) [2021-11-06 15:34:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61733 states to 61733 states and 87536 transitions. [2021-11-06 15:34:14,968 INFO L78 Accepts]: Start accepts. Automaton has 61733 states and 87536 transitions. Word has length 135 [2021-11-06 15:34:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:34:14,969 INFO L470 AbstractCegarLoop]: Abstraction has 61733 states and 87536 transitions. [2021-11-06 15:34:14,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:34:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 61733 states and 87536 transitions. [2021-11-06 15:34:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 15:34:15,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:34:15,016 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:34:15,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:34:15,017 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:34:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:34:15,017 INFO L85 PathProgramCache]: Analyzing trace with hash 870595574, now seen corresponding path program 1 times [2021-11-06 15:34:15,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:34:15,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130563004] [2021-11-06 15:34:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:34:15,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:34:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:34:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-06 15:34:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:34:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:34:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:34:15,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:34:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:34:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:34:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:34:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:34:15,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:34:15,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130563004] [2021-11-06 15:34:15,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130563004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:34:15,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:34:15,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:34:15,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307425042] [2021-11-06 15:34:15,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:34:15,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:34:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:34:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:34:15,246 INFO L87 Difference]: Start difference. First operand 61733 states and 87536 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:35:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:35:17,643 INFO L93 Difference]: Finished difference Result 123943 states and 175639 transitions. [2021-11-06 15:35:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:35:17,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 132 [2021-11-06 15:35:17,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:35:17,813 INFO L225 Difference]: With dead ends: 123943 [2021-11-06 15:35:17,814 INFO L226 Difference]: Without dead ends: 62238 [2021-11-06 15:35:17,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:35:17,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62238 states. [2021-11-06 15:35:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62238 to 61701. [2021-11-06 15:35:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61701 states, 60634 states have (on average 1.4006003232509814) internal successors, (84924), 60776 states have internal predecessors, (84924), 592 states have call successors, (592), 320 states have call predecessors, (592), 472 states have return successors, (1924), 652 states have call predecessors, (1924), 592 states have call successors, (1924) [2021-11-06 15:35:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61701 states to 61701 states and 87440 transitions. [2021-11-06 15:35:20,105 INFO L78 Accepts]: Start accepts. Automaton has 61701 states and 87440 transitions. Word has length 132 [2021-11-06 15:35:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:35:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 61701 states and 87440 transitions. [2021-11-06 15:35:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:35:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 61701 states and 87440 transitions. [2021-11-06 15:35:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 15:35:20,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:35:20,156 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:35:20,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 15:35:20,156 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:35:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:35:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1109744026, now seen corresponding path program 1 times [2021-11-06 15:35:20,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:35:20,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186338730] [2021-11-06 15:35:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:35:20,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:35:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:35:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:35:20,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:35:20,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186338730] [2021-11-06 15:35:20,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186338730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:35:20,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:35:20,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:35:20,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935437210] [2021-11-06 15:35:20,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:35:20,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:35:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:35:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:35:20,290 INFO L87 Difference]: Start difference. First operand 61701 states and 87440 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:35:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:35:24,160 INFO L93 Difference]: Finished difference Result 103469 states and 146092 transitions. [2021-11-06 15:35:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:35:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-06 15:35:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:35:24,258 INFO L225 Difference]: With dead ends: 103469 [2021-11-06 15:35:24,258 INFO L226 Difference]: Without dead ends: 41794 [2021-11-06 15:35:24,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:35:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41794 states. [2021-11-06 15:35:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41794 to 41784. [2021-11-06 15:35:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41784 states, 41117 states have (on average 1.3903008487973345) internal successors, (57165), 41206 states have internal predecessors, (57165), 370 states have call successors, (370), 200 states have call predecessors, (370), 294 states have return successors, (1131), 407 states have call predecessors, (1131), 370 states have call successors, (1131) [2021-11-06 15:35:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41784 states to 41784 states and 58666 transitions. [2021-11-06 15:35:25,906 INFO L78 Accepts]: Start accepts. Automaton has 41784 states and 58666 transitions. Word has length 128 [2021-11-06 15:35:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:35:25,906 INFO L470 AbstractCegarLoop]: Abstraction has 41784 states and 58666 transitions. [2021-11-06 15:35:25,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:35:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41784 states and 58666 transitions. [2021-11-06 15:35:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 15:35:25,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:35:25,939 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:35:25,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 15:35:25,940 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:35:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:35:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1196318847, now seen corresponding path program 1 times [2021-11-06 15:35:25,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:35:25,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016755900] [2021-11-06 15:35:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:35:25,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:35:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:35:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-06 15:35:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:35:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:35:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:35:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:35:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:35:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:35:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:35:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:35:26,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:35:26,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016755900] [2021-11-06 15:35:26,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016755900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:35:26,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:35:26,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:35:26,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249594028] [2021-11-06 15:35:26,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:35:26,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:35:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:35:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:35:26,179 INFO L87 Difference]: Start difference. First operand 41784 states and 58666 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:36:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:35,431 INFO L93 Difference]: Finished difference Result 83858 states and 117678 transitions. [2021-11-06 15:36:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:36:35,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 133 [2021-11-06 15:36:35,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:35,547 INFO L225 Difference]: With dead ends: 83858 [2021-11-06 15:36:35,547 INFO L226 Difference]: Without dead ends: 42102 [2021-11-06 15:36:35,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:36:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42102 states. [2021-11-06 15:36:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42102 to 41764. [2021-11-06 15:36:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41764 states, 41107 states have (on average 1.39015252876639) internal successors, (57145), 41196 states have internal predecessors, (57145), 360 states have call successors, (360), 200 states have call predecessors, (360), 294 states have return successors, (1103), 397 states have call predecessors, (1103), 360 states have call successors, (1103) [2021-11-06 15:36:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41764 states to 41764 states and 58608 transitions. [2021-11-06 15:36:37,258 INFO L78 Accepts]: Start accepts. Automaton has 41764 states and 58608 transitions. Word has length 133 [2021-11-06 15:36:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:37,258 INFO L470 AbstractCegarLoop]: Abstraction has 41764 states and 58608 transitions. [2021-11-06 15:36:37,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:36:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 41764 states and 58608 transitions. [2021-11-06 15:36:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 15:36:37,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:37,310 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:37,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 15:36:37,311 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:36:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1089310028, now seen corresponding path program 1 times [2021-11-06 15:36:37,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:37,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508646585] [2021-11-06 15:36:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:37,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:36:37,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:37,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508646585] [2021-11-06 15:36:37,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508646585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:37,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:37,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:36:37,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674874805] [2021-11-06 15:36:37,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:36:37,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:36:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:36:37,477 INFO L87 Difference]: Start difference. First operand 41764 states and 58608 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:40,373 INFO L93 Difference]: Finished difference Result 102083 states and 142970 transitions. [2021-11-06 15:36:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:36:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-06 15:36:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:40,550 INFO L225 Difference]: With dead ends: 102083 [2021-11-06 15:36:40,551 INFO L226 Difference]: Without dead ends: 72120 [2021-11-06 15:36:40,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:36:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72120 states. [2021-11-06 15:36:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72120 to 41764. [2021-11-06 15:36:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41764 states, 41107 states have (on average 1.3900552217383901) internal successors, (57141), 41196 states have internal predecessors, (57141), 360 states have call successors, (360), 200 states have call predecessors, (360), 294 states have return successors, (1103), 397 states have call predecessors, (1103), 360 states have call successors, (1103) [2021-11-06 15:36:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41764 states to 41764 states and 58604 transitions. [2021-11-06 15:36:42,624 INFO L78 Accepts]: Start accepts. Automaton has 41764 states and 58604 transitions. Word has length 145 [2021-11-06 15:36:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:42,624 INFO L470 AbstractCegarLoop]: Abstraction has 41764 states and 58604 transitions. [2021-11-06 15:36:42,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 41764 states and 58604 transitions. [2021-11-06 15:36:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 15:36:42,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:42,678 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:42,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 15:36:42,679 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:36:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash 263376880, now seen corresponding path program 1 times [2021-11-06 15:36:42,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:42,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845627773] [2021-11-06 15:36:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:42,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-06 15:36:42,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:42,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845627773] [2021-11-06 15:36:42,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845627773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:42,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:42,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:42,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852361441] [2021-11-06 15:36:42,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:42,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:42,835 INFO L87 Difference]: Start difference. First operand 41764 states and 58604 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:44,549 INFO L93 Difference]: Finished difference Result 83510 states and 117191 transitions. [2021-11-06 15:36:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:44,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-06 15:36:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:44,655 INFO L225 Difference]: With dead ends: 83510 [2021-11-06 15:36:44,656 INFO L226 Difference]: Without dead ends: 41766 [2021-11-06 15:36:44,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41766 states. [2021-11-06 15:36:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41766 to 41766. [2021-11-06 15:36:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41766 states, 41109 states have (on average 1.3900362451044783) internal successors, (57143), 41198 states have internal predecessors, (57143), 360 states have call successors, (360), 200 states have call predecessors, (360), 294 states have return successors, (1103), 397 states have call predecessors, (1103), 360 states have call successors, (1103) [2021-11-06 15:36:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41766 states to 41766 states and 58606 transitions. [2021-11-06 15:36:46,525 INFO L78 Accepts]: Start accepts. Automaton has 41766 states and 58606 transitions. Word has length 147 [2021-11-06 15:36:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:46,526 INFO L470 AbstractCegarLoop]: Abstraction has 41766 states and 58606 transitions. [2021-11-06 15:36:46,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41766 states and 58606 transitions. [2021-11-06 15:36:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 15:36:46,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:46,579 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:46,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 15:36:46,580 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:36:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1067719058, now seen corresponding path program 1 times [2021-11-06 15:36:46,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:46,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739751772] [2021-11-06 15:36:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:46,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 15:36:46,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:46,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739751772] [2021-11-06 15:36:46,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739751772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:36:46,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123913562] [2021-11-06 15:36:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:46,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:36:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:36:46,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:36:46,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process