./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-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 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 17:21:17,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:21:17,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:21:17,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:21:17,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:21:17,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:21:17,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:21:17,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:21:17,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:21:17,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:21:17,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:21:17,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:21:17,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:21:17,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:21:17,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:21:17,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:21:17,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:21:17,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:21:17,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:21:17,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:21:17,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:21:17,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:21:17,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:21:17,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:21:17,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:21:17,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:21:17,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:21:17,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:21:17,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:21:17,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:21:17,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:21:17,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:21:17,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:21:17,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:21:17,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:21:17,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:21:17,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:21:17,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:21:17,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:21:17,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:21:17,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:21:17,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:21:17,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:21:18,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:21:18,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:21:18,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:21:18,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:21:18,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:21:18,004 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:21:18,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:21:18,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:21:18,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:21:18,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:21:18,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:21:18,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:21:18,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:21:18,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:21:18,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:21:18,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:21:18,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:21:18,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:21:18,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:21:18,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:21:18,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:21:18,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:21:18,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:21:18,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:21:18,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:21:18,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:21:18,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:21:18,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:21:18,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-05 17:21:18,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:21:18,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:21:18,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:21:18,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:21:18,327 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:21:18,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:21:18,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c6e0d82/8818629be3b542609ab34ae5bcc58f58/FLAGcd443c603 [2021-11-05 17:21:19,135 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:21:19,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:21:19,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c6e0d82/8818629be3b542609ab34ae5bcc58f58/FLAGcd443c603 [2021-11-05 17:21:19,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c6e0d82/8818629be3b542609ab34ae5bcc58f58 [2021-11-05 17:21:19,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:21:19,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:21:19,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:21:19,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:21:19,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:21:19,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:21:19" (1/1) ... [2021-11-05 17:21:19,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b2633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:19, skipping insertion in model container [2021-11-05 17:21:19,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:21:19" (1/1) ... [2021-11-05 17:21:19,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:21:19,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:21:21,109 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-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-05 17:21:21,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:21:21,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:21:21,578 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-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-05 17:21:21,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:21:21,713 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:21:21,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21 WrapperNode [2021-11-05 17:21:21,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:21:21,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:21:21,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:21:21,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:21:21,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:21,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:23,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:21:23,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:21:23,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:21:23,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:21:23,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:23,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:24,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:24,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:25,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:25,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:25,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:26,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:21:26,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:21:26,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:21:26,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:21:26,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (1/1) ... [2021-11-05 17:21:26,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:21:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:21:26,301 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) [2021-11-05 17:21:26,311 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 [2021-11-05 17:21:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 17:21:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 17:21:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-05 17:21:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-05 17:21:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 17:21:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 17:21:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-05 17:21:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-05 17:21:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 17:21:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 17:21:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-05 17:21:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-05 17:21:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-05 17:21:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-05 17:21:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:21:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-05 17:21:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-05 17:21:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:21:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-05 17:21:26,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-05 17:21:26,339 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-05 17:21:26,339 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-05 17:21:26,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-05 17:21:26,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-05 17:21:26,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:21:26,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:21:26,340 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-05 17:21:26,340 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-05 17:21:26,340 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-05 17:21:26,340 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-05 17:21:26,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 17:21:26,340 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-05 17:21:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-05 17:21:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 17:21:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-05 17:21:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-05 17:21:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:21:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-05 17:21:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-05 17:21:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:21:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-05 17:21:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-05 17:21:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:21:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:21:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:21:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:21:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-05 17:21:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-05 17:21:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-05 17:21:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-05 17:21:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-05 17:21:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-05 17:21:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-05 17:21:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:21:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-05 17:21:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:21:26,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:21:52,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:21:52,682 INFO L299 CfgBuilder]: Removed 14764 assume(true) statements. [2021-11-05 17:21:52,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:21:52 BoogieIcfgContainer [2021-11-05 17:21:52,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:21:52,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:21:52,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:21:52,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:21:52,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:21:19" (1/3) ... [2021-11-05 17:21:52,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1e7033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:21:52, skipping insertion in model container [2021-11-05 17:21:52,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:21:21" (2/3) ... [2021-11-05 17:21:52,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1e7033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:21:52, skipping insertion in model container [2021-11-05 17:21:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:21:52" (3/3) ... [2021-11-05 17:21:52,702 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:21:52,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:21:52,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-05 17:21:52,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:21:52,789 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 [2021-11-05 17:21:52,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-05 17:21:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 11120 states, 11055 states have (on average 1.4388964269561284) internal successors, (15907), 11066 states have internal predecessors, (15907), 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) [2021-11-05 17:21:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 17:21:52,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:21:52,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:21:52,989 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:21:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:21:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash -490614643, now seen corresponding path program 1 times [2021-11-05 17:21:53,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:21:53,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528494749] [2021-11-05 17:21:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:21:53,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:21:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:21:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:21:53,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:21:53,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528494749] [2021-11-05 17:21:53,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528494749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:21:53,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:21:53,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:21:53,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182658667] [2021-11-05 17:21:53,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:21:53,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 17:21:53,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:21:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 17:21:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:21:53,542 INFO L87 Difference]: Start difference. First operand has 11120 states, 11055 states have (on average 1.4388964269561284) internal successors, (15907), 11066 states have internal predecessors, (15907), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:21:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:21:54,298 INFO L93 Difference]: Finished difference Result 22236 states and 32001 transitions. [2021-11-05 17:21:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 17:21:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-05 17:21:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:21:54,373 INFO L225 Difference]: With dead ends: 22236 [2021-11-05 17:21:54,374 INFO L226 Difference]: Without dead ends: 11103 [2021-11-05 17:21:54,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:21:54,418 INFO L933 BasicCegarLoop]: 15960 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15960 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:21:54,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15960 Invalid, 0 Unknown, 0 Unchecked, 43.61ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:21:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-11-05 17:21:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 11103. [2021-11-05 17:21:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11103 states, 11039 states have (on average 1.4358184618171936) internal successors, (15850), 11049 states have internal predecessors, (15850), 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) [2021-11-05 17:21:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11103 states to 11103 states and 15930 transitions. [2021-11-05 17:21:54,872 INFO L78 Accepts]: Start accepts. Automaton has 11103 states and 15930 transitions. Word has length 47 [2021-11-05 17:21:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:21:54,872 INFO L470 AbstractCegarLoop]: Abstraction has 11103 states and 15930 transitions. [2021-11-05 17:21:54,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:21:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11103 states and 15930 transitions. [2021-11-05 17:21:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 17:21:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:21:54,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:21:54,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:21:54,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:21:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:21:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1635357639, now seen corresponding path program 1 times [2021-11-05 17:21:54,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:21:54,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299560132] [2021-11-05 17:21:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:21:54,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:21:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:21:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:21:55,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:21:55,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299560132] [2021-11-05 17:21:55,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299560132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:21:55,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:21:55,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:21:55,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911199782] [2021-11-05 17:21:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:21:55,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:21:55,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:21:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:21:55,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:21:55,084 INFO L87 Difference]: Start difference. First operand 11103 states and 15930 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:21:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:21:58,714 INFO L93 Difference]: Finished difference Result 33242 states and 47793 transitions. [2021-11-05 17:21:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:21:58,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-05 17:21:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:21:58,827 INFO L225 Difference]: With dead ends: 33242 [2021-11-05 17:21:58,828 INFO L226 Difference]: Without dead ends: 22167 [2021-11-05 17:21:58,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:21:58,865 INFO L933 BasicCegarLoop]: 15562 mSDtfsCounter, 15222 mSDsluCounter, 14603 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2290.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15222 SdHoareTripleChecker+Valid, 30165 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.81ms SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2826.13ms IncrementalHoareTripleChecker+Time [2021-11-05 17:21:58,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15222 Valid, 30165 Invalid, 2642 Unknown, 0 Unchecked, 63.81ms Time], IncrementalHoareTripleChecker [659 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 2826.13ms Time] [2021-11-05 17:21:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22167 states. [2021-11-05 17:21:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22167 to 22167. [2021-11-05 17:21:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22167 states, 22043 states have (on average 1.4064328811867712) internal successors, (31002), 22060 states have internal predecessors, (31002), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (112), 74 states have call predecessors, (112), 80 states have call successors, (112) [2021-11-05 17:21:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22167 states to 22167 states and 31194 transitions. [2021-11-05 17:21:59,650 INFO L78 Accepts]: Start accepts. Automaton has 22167 states and 31194 transitions. Word has length 47 [2021-11-05 17:21:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:21:59,651 INFO L470 AbstractCegarLoop]: Abstraction has 22167 states and 31194 transitions. [2021-11-05 17:21:59,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:21:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 22167 states and 31194 transitions. [2021-11-05 17:21:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 17:21:59,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:21:59,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:21:59,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 17:21:59,657 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:21:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:21:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -843473344, now seen corresponding path program 1 times [2021-11-05 17:21:59,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:21:59,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018908447] [2021-11-05 17:21:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:21:59,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:21:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:21:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:21:59,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:21:59,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018908447] [2021-11-05 17:21:59,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018908447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:21:59,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:21:59,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:21:59,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144243778] [2021-11-05 17:21:59,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:21:59,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:21:59,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:21:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:21:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:21:59,871 INFO L87 Difference]: Start difference. First operand 22167 states and 31194 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) [2021-11-05 17:22:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:02,298 INFO L93 Difference]: Finished difference Result 66127 states and 93206 transitions. [2021-11-05 17:22:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:22:02,300 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 [2021-11-05 17:22:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:02,460 INFO L225 Difference]: With dead ends: 66127 [2021-11-05 17:22:02,461 INFO L226 Difference]: Without dead ends: 43988 [2021-11-05 17:22:02,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:02,535 INFO L933 BasicCegarLoop]: 16281 mSDtfsCounter, 15344 mSDsluCounter, 15242 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1103.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15344 SdHoareTripleChecker+Valid, 31523 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.54ms SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1373.48ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:02,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15344 Valid, 31523 Invalid, 1305 Unknown, 0 Unchecked, 52.54ms Time], IncrementalHoareTripleChecker [326 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1373.48ms Time] [2021-11-05 17:22:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43988 states. [2021-11-05 17:22:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43988 to 43970. [2021-11-05 17:22:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43970 states, 43726 states have (on average 1.392169418652518) internal successors, (60874), 43757 states have internal predecessors, (60874), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-05 17:22:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43970 states to 43970 states and 61258 transitions. [2021-11-05 17:22:03,742 INFO L78 Accepts]: Start accepts. Automaton has 43970 states and 61258 transitions. Word has length 48 [2021-11-05 17:22:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:03,743 INFO L470 AbstractCegarLoop]: Abstraction has 43970 states and 61258 transitions. [2021-11-05 17:22:03,743 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) [2021-11-05 17:22:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 43970 states and 61258 transitions. [2021-11-05 17:22:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 17:22:03,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:03,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:22:03,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 17:22:03,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash -377822479, now seen corresponding path program 1 times [2021-11-05 17:22:03,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:03,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358508138] [2021-11-05 17:22:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:03,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:22:04,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:04,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358508138] [2021-11-05 17:22:04,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358508138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:04,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:04,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:22:04,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834573408] [2021-11-05 17:22:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:04,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:22:04,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:22:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:04,103 INFO L87 Difference]: Start difference. First operand 43970 states and 61258 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) [2021-11-05 17:22:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:04,731 INFO L93 Difference]: Finished difference Result 43970 states and 61258 transitions. [2021-11-05 17:22:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:22:04,731 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 [2021-11-05 17:22:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:04,872 INFO L225 Difference]: With dead ends: 43970 [2021-11-05 17:22:04,872 INFO L226 Difference]: Without dead ends: 43968 [2021-11-05 17:22:04,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:04,902 INFO L933 BasicCegarLoop]: 15927 mSDtfsCounter, 15881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15881 SdHoareTripleChecker+Valid, 15927 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.59ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:04,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15881 Valid, 15927 Invalid, 1 Unknown, 0 Unchecked, 19.60ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.59ms Time] [2021-11-05 17:22:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43968 states. [2021-11-05 17:22:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43968 to 43968. [2021-11-05 17:22:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43968 states, 43725 states have (on average 1.3921555174385363) internal successors, (60872), 43755 states have internal predecessors, (60872), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-05 17:22:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43968 states to 43968 states and 61256 transitions. [2021-11-05 17:22:06,128 INFO L78 Accepts]: Start accepts. Automaton has 43968 states and 61256 transitions. Word has length 49 [2021-11-05 17:22:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:06,129 INFO L470 AbstractCegarLoop]: Abstraction has 43968 states and 61256 transitions. [2021-11-05 17:22:06,129 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) [2021-11-05 17:22:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 43968 states and 61256 transitions. [2021-11-05 17:22:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 17:22:06,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:06,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:22:06,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 17:22:06,134 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1172452458, now seen corresponding path program 1 times [2021-11-05 17:22:06,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:06,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854941949] [2021-11-05 17:22:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:06,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:22:06,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:06,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854941949] [2021-11-05 17:22:06,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854941949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:06,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:06,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:22:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848230870] [2021-11-05 17:22:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:06,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:22:06,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:22:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:06,269 INFO L87 Difference]: Start difference. First operand 43968 states and 61256 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) [2021-11-05 17:22:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:07,273 INFO L93 Difference]: Finished difference Result 43968 states and 61256 transitions. [2021-11-05 17:22:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:22:07,273 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 [2021-11-05 17:22:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:07,406 INFO L225 Difference]: With dead ends: 43968 [2021-11-05 17:22:07,407 INFO L226 Difference]: Without dead ends: 37972 [2021-11-05 17:22:07,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:07,435 INFO L933 BasicCegarLoop]: 15926 mSDtfsCounter, 15878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15878 SdHoareTripleChecker+Valid, 15926 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:07,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15878 Valid, 15926 Invalid, 0 Unknown, 0 Unchecked, 21.63ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:22:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37972 states. [2021-11-05 17:22:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37972 to 37972. [2021-11-05 17:22:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37972 states, 37730 states have (on average 1.4002915451895044) internal successors, (52833), 37759 states have internal predecessors, (52833), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-05 17:22:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37972 states to 37972 states and 53217 transitions. [2021-11-05 17:22:08,556 INFO L78 Accepts]: Start accepts. Automaton has 37972 states and 53217 transitions. Word has length 50 [2021-11-05 17:22:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:08,557 INFO L470 AbstractCegarLoop]: Abstraction has 37972 states and 53217 transitions. [2021-11-05 17:22:08,557 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) [2021-11-05 17:22:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37972 states and 53217 transitions. [2021-11-05 17:22:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 17:22:08,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:08,576 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:22:08,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 17:22:08,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 861531681, now seen corresponding path program 1 times [2021-11-05 17:22:08,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:08,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404670296] [2021-11-05 17:22:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:08,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:22:08,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:08,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404670296] [2021-11-05 17:22:08,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404670296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:08,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:08,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:22:08,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700161730] [2021-11-05 17:22:08,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:08,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:22:08,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:08,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:22:08,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:08,726 INFO L87 Difference]: Start difference. First operand 37972 states and 53217 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-05 17:22:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:10,348 INFO L93 Difference]: Finished difference Result 91243 states and 127894 transitions. [2021-11-05 17:22:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:22:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-05 17:22:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:10,574 INFO L225 Difference]: With dead ends: 91243 [2021-11-05 17:22:10,574 INFO L226 Difference]: Without dead ends: 53299 [2021-11-05 17:22:10,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:10,664 INFO L933 BasicCegarLoop]: 16254 mSDtfsCounter, 14137 mSDsluCounter, 7267 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14137 SdHoareTripleChecker+Valid, 23521 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.10ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.98ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:10,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14137 Valid, 23521 Invalid, 24 Unknown, 0 Unchecked, 32.10ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 70.98ms Time] [2021-11-05 17:22:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53299 states. [2021-11-05 17:22:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53299 to 53284. [2021-11-05 17:22:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53284 states, 52802 states have (on average 1.3999659103821824) internal successors, (73921), 52859 states have internal predecessors, (73921), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-05 17:22:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53284 states to 53284 states and 74689 transitions. [2021-11-05 17:22:12,290 INFO L78 Accepts]: Start accepts. Automaton has 53284 states and 74689 transitions. Word has length 73 [2021-11-05 17:22:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:12,290 INFO L470 AbstractCegarLoop]: Abstraction has 53284 states and 74689 transitions. [2021-11-05 17:22:12,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-05 17:22:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 53284 states and 74689 transitions. [2021-11-05 17:22:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 17:22:12,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:12,320 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:22:12,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 17:22:12,323 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash -901970140, now seen corresponding path program 1 times [2021-11-05 17:22:12,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:12,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890963030] [2021-11-05 17:22:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:12,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 17:22:12,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:12,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890963030] [2021-11-05 17:22:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890963030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:12,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:12,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:22:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803620498] [2021-11-05 17:22:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:12,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:22:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:22:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:22:12,491 INFO L87 Difference]: Start difference. First operand 53284 states and 74689 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:22:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:14,742 INFO L93 Difference]: Finished difference Result 129992 states and 182353 transitions. [2021-11-05 17:22:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:22:14,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-05 17:22:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:14,979 INFO L225 Difference]: With dead ends: 129992 [2021-11-05 17:22:14,979 INFO L226 Difference]: Without dead ends: 76736 [2021-11-05 17:22:15,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:22:15,122 INFO L933 BasicCegarLoop]: 16746 mSDtfsCounter, 34730 mSDsluCounter, 15939 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34730 SdHoareTripleChecker+Valid, 32685 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.57ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.03ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:15,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34730 Valid, 32685 Invalid, 35 Unknown, 0 Unchecked, 62.57ms Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 84.03ms Time] [2021-11-05 17:22:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76736 states. [2021-11-05 17:22:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76736 to 53298. [2021-11-05 17:22:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53298 states, 52816 states have (on average 1.3998598909421387) internal successors, (73935), 52873 states have internal predecessors, (73935), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-05 17:22:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53298 states to 53298 states and 74703 transitions. [2021-11-05 17:22:16,839 INFO L78 Accepts]: Start accepts. Automaton has 53298 states and 74703 transitions. Word has length 99 [2021-11-05 17:22:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:16,840 INFO L470 AbstractCegarLoop]: Abstraction has 53298 states and 74703 transitions. [2021-11-05 17:22:16,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:22:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 53298 states and 74703 transitions. [2021-11-05 17:22:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 17:22:16,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:16,881 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:22:16,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 17:22:16,883 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1847690109, now seen corresponding path program 1 times [2021-11-05 17:22:16,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:16,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802180591] [2021-11-05 17:22:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:16,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:22:17,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:17,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802180591] [2021-11-05 17:22:17,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802180591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:17,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:17,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:22:17,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003752116] [2021-11-05 17:22:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:17,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:22:17,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:22:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:17,076 INFO L87 Difference]: Start difference. First operand 53298 states and 74703 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-05 17:22:19,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:22:20,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:20,911 INFO L93 Difference]: Finished difference Result 121768 states and 170906 transitions. [2021-11-05 17:22:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:22:20,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 103 [2021-11-05 17:22:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:21,161 INFO L225 Difference]: With dead ends: 121768 [2021-11-05 17:22:21,162 INFO L226 Difference]: Without dead ends: 68498 [2021-11-05 17:22:21,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:21,266 INFO L933 BasicCegarLoop]: 18447 mSDtfsCounter, 11523 mSDsluCounter, 7304 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2040.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11523 SdHoareTripleChecker+Valid, 25751 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2171.16ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:21,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11523 Valid, 25751 Invalid, 15 Unknown, 0 Unchecked, 19.75ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2171.16ms Time] [2021-11-05 17:22:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68498 states. [2021-11-05 17:22:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68498 to 68498. [2021-11-05 17:22:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68498 states, 67536 states have (on average 1.4019337834636343) internal successors, (94681), 67649 states have internal predecessors, (94681), 640 states have call successors, (640), 320 states have call predecessors, (640), 320 states have return successors, (896), 592 states have call predecessors, (896), 640 states have call successors, (896) [2021-11-05 17:22:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68498 states to 68498 states and 96217 transitions. [2021-11-05 17:22:23,217 INFO L78 Accepts]: Start accepts. Automaton has 68498 states and 96217 transitions. Word has length 103 [2021-11-05 17:22:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 68498 states and 96217 transitions. [2021-11-05 17:22:23,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-05 17:22:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 68498 states and 96217 transitions. [2021-11-05 17:22:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 17:22:23,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:23,273 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 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] [2021-11-05 17:22:23,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 17:22:23,273 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:23,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash 808525327, now seen corresponding path program 1 times [2021-11-05 17:22:23,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:23,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112338473] [2021-11-05 17:22:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:23,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:22:23,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:23,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112338473] [2021-11-05 17:22:23,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112338473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:23,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:23,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:22:23,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920386394] [2021-11-05 17:22:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:23,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:22:23,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:22:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:23,416 INFO L87 Difference]: Start difference. First operand 68498 states and 96217 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 17:22:25,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:22:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:27,075 INFO L93 Difference]: Finished difference Result 115361 states and 161881 transitions. [2021-11-05 17:22:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:22:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 118 [2021-11-05 17:22:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:27,203 INFO L225 Difference]: With dead ends: 115361 [2021-11-05 17:22:27,203 INFO L226 Difference]: Without dead ends: 46889 [2021-11-05 17:22:27,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:22:27,331 INFO L933 BasicCegarLoop]: 15827 mSDtfsCounter, 3 mSDsluCounter, 15822 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2028.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31649 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2147.78ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:27,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 31649 Invalid, 5 Unknown, 0 Unchecked, 15.50ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2147.78ms Time] [2021-11-05 17:22:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46889 states. [2021-11-05 17:22:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46889 to 46883. [2021-11-05 17:22:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46883 states, 46281 states have (on average 1.3984788574144897) internal successors, (64723), 46352 states have internal predecessors, (64723), 400 states have call successors, (400), 200 states have call predecessors, (400), 200 states have return successors, (560), 370 states have call predecessors, (560), 400 states have call successors, (560) [2021-11-05 17:22:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46883 states to 46883 states and 65683 transitions. [2021-11-05 17:22:28,722 INFO L78 Accepts]: Start accepts. Automaton has 46883 states and 65683 transitions. Word has length 118 [2021-11-05 17:22:28,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:28,723 INFO L470 AbstractCegarLoop]: Abstraction has 46883 states and 65683 transitions. [2021-11-05 17:22:28,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 17:22:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand 46883 states and 65683 transitions. [2021-11-05 17:22:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 17:22:28,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:28,786 INFO L514 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] [2021-11-05 17:22:28,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 17:22:28,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash 653651596, now seen corresponding path program 1 times [2021-11-05 17:22:28,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:28,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450630198] [2021-11-05 17:22:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:28,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-05 17:22:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-05 17:22:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 17:22:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-05 17:22:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:22:29,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:29,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450630198] [2021-11-05 17:22:29,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450630198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:29,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:29,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 17:22:29,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891677983] [2021-11-05 17:22:29,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:29,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:22:29,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:29,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:22:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:22:29,096 INFO L87 Difference]: Start difference. First operand 46883 states and 65683 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-05 17:22:31,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:22:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:22:47,866 INFO L93 Difference]: Finished difference Result 94568 states and 132891 transitions. [2021-11-05 17:22:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 17:22:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2021-11-05 17:22:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:22:47,980 INFO L225 Difference]: With dead ends: 94568 [2021-11-05 17:22:47,980 INFO L226 Difference]: Without dead ends: 47713 [2021-11-05 17:22:48,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.16ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 17:22:48,080 INFO L933 BasicCegarLoop]: 15686 mSDtfsCounter, 407 mSDsluCounter, 39538 mSDsCounter, 0 mSdLazyCounter, 7783 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15205.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 55224 SdHoareTripleChecker+Invalid, 7836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.47ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 7783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17378.29ms IncrementalHoareTripleChecker+Time [2021-11-05 17:22:48,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 55224 Invalid, 7836 Unknown, 0 Unchecked, 92.47ms Time], IncrementalHoareTripleChecker [52 Valid, 7783 Invalid, 1 Unknown, 0 Unchecked, 17378.29ms Time] [2021-11-05 17:22:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47713 states. [2021-11-05 17:22:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47713 to 47043. [2021-11-05 17:22:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47043 states, 46396 states have (on average 1.3975989309423227) internal successors, (64843), 46482 states have internal predecessors, (64843), 405 states have call successors, (405), 200 states have call predecessors, (405), 240 states have return successors, (635), 410 states have call predecessors, (635), 405 states have call successors, (635) [2021-11-05 17:22:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47043 states to 47043 states and 65883 transitions. [2021-11-05 17:22:49,439 INFO L78 Accepts]: Start accepts. Automaton has 47043 states and 65883 transitions. Word has length 134 [2021-11-05 17:22:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:22:49,439 INFO L470 AbstractCegarLoop]: Abstraction has 47043 states and 65883 transitions. [2021-11-05 17:22:49,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-05 17:22:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 47043 states and 65883 transitions. [2021-11-05 17:22:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-05 17:22:49,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:22:49,492 INFO L514 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] [2021-11-05 17:22:49,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 17:22:49,492 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:22:49,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:22:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 169280119, now seen corresponding path program 1 times [2021-11-05 17:22:49,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:22:49,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603358136] [2021-11-05 17:22:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:22:49,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:22:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-05 17:22:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-05 17:22:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 17:22:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-05 17:22:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:22:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:22:50,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:22:50,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603358136] [2021-11-05 17:22:50,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603358136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:22:50,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:22:50,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 17:22:50,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931016689] [2021-11-05 17:22:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:22:50,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 17:22:50,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:22:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 17:22:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 17:22:50,123 INFO L87 Difference]: Start difference. First operand 47043 states and 65883 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-05 17:22:52,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:23:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:23:08,983 INFO L93 Difference]: Finished difference Result 75085 states and 105925 transitions. [2021-11-05 17:23:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 17:23:08,984 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 132 [2021-11-05 17:23:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:23:09,125 INFO L225 Difference]: With dead ends: 75085 [2021-11-05 17:23:09,126 INFO L226 Difference]: Without dead ends: 48513 [2021-11-05 17:23:09,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 86.21ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-05 17:23:09,219 INFO L933 BasicCegarLoop]: 15705 mSDtfsCounter, 580 mSDsluCounter, 55222 mSDsCounter, 0 mSdLazyCounter, 7978 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15371.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 70927 SdHoareTripleChecker+Invalid, 8041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.07ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 7978 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17549.48ms IncrementalHoareTripleChecker+Time [2021-11-05 17:23:09,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 70927 Invalid, 8041 Unknown, 0 Unchecked, 88.07ms Time], IncrementalHoareTripleChecker [62 Valid, 7978 Invalid, 1 Unknown, 0 Unchecked, 17549.48ms Time] [2021-11-05 17:23:09,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48513 states. [2021-11-05 17:23:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48513 to 47073. [2021-11-05 17:23:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47073 states, 46426 states have (on average 1.3973420066342135) internal successors, (64873), 46512 states have internal predecessors, (64873), 405 states have call successors, (405), 200 states have call predecessors, (405), 240 states have return successors, (635), 410 states have call predecessors, (635), 405 states have call successors, (635) [2021-11-05 17:23:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47073 states to 47073 states and 65913 transitions. [2021-11-05 17:23:10,543 INFO L78 Accepts]: Start accepts. Automaton has 47073 states and 65913 transitions. Word has length 132 [2021-11-05 17:23:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:23:10,543 INFO L470 AbstractCegarLoop]: Abstraction has 47073 states and 65913 transitions. [2021-11-05 17:23:10,544 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-05 17:23:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 47073 states and 65913 transitions. [2021-11-05 17:23:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 17:23:10,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:23:10,597 INFO L514 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] [2021-11-05 17:23:10,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 17:23:10,597 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:23:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:23:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1771757657, now seen corresponding path program 1 times [2021-11-05 17:23:10,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:23:10,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299167247] [2021-11-05 17:23:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:23:10,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:23:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:23:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-05 17:23:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:23:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-05 17:23:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:23:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 17:23:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:23:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-05 17:23:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:23:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:23:10,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:23:10,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299167247] [2021-11-05 17:23:10,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299167247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:23:10,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:23:10,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:23:10,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071158094] [2021-11-05 17:23:10,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:23:10,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:23:10,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:23:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:23:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:23:10,923 INFO L87 Difference]: Start difference. First operand 47073 states and 65913 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 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) [2021-11-05 17:23:12,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []