./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:31:27,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:31:27,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:31:27,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:31:27,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:31:27,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:31:27,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:31:27,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:31:27,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:31:27,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:31:27,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:31:27,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:31:27,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:31:27,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:31:27,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:31:27,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:31:27,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:31:27,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:31:27,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:31:27,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:31:27,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:31:27,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:31:27,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:31:27,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:31:27,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:31:27,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:31:27,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:31:27,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:31:27,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:31:27,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:31:27,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:31:27,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:31:27,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:31:27,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:31:27,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:31:27,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:31:27,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:31:27,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:31:27,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:31:27,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:31:27,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:31:27,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:31:27,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:31:27,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:31:27,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:31:27,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:31:27,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:31:27,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:31:27,661 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:31:27,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:31:27,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:31:27,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:31:27,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:31:27,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:31:27,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:31:27,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:31:27,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:31:27,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:31:27,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:31:27,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:31:27,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:31:27,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:31:27,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:31:27,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:31:27,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:31:27,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:31:27,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:31:27,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:31:27,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:31:27,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:31:27,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:31:27,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 [2021-11-06 15:31:27,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:31:27,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:31:27,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:31:27,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:31:27,938 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:31:27,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:31:27,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e6eb0a3/0464ba7d154c4142833c4ed63e4a31a6/FLAG4a8648a30 [2021-11-06 15:31:28,659 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:31:28,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:31:28,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e6eb0a3/0464ba7d154c4142833c4ed63e4a31a6/FLAG4a8648a30 [2021-11-06 15:31:29,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e6eb0a3/0464ba7d154c4142833c4ed63e4a31a6 [2021-11-06 15:31:29,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:31:29,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:31:29,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:31:29,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:31:29,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:31:29,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:31:29" (1/1) ... [2021-11-06 15:31:29,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b05ebb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:29, skipping insertion in model container [2021-11-06 15:31:29,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:31:29" (1/1) ... [2021-11-06 15:31:29,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:31:29,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:31:30,247 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2021-11-06 15:31:30,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:31:30,293 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:31:30,518 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2021-11-06 15:31:30,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:31:30,580 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:31:30,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30 WrapperNode [2021-11-06 15:31:30,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:31:30,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:31:30,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:31:30,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:31:30,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:30,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:32,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:31:32,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:31:32,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:31:32,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:31:32,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:32,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:32,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:32,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:33,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:33,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:33,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:33,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:31:33,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:31:33,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:31:33,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:31:33,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (1/1) ... [2021-11-06 15:31:33,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:31:33,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:31:33,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:31:34,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:31:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:31:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:31:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-06 15:31:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-06 15:31:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 15:31:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 15:31:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-06 15:31:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-06 15:31:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:31:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:31:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-06 15:31:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-06 15:31:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_26 [2021-11-06 15:31:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_26 [2021-11-06 15:31:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:31:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-06 15:31:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-06 15:31:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:31:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-06 15:31:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-06 15:31:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-06 15:31:34,024 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-06 15:31:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-11-06 15:31:34,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-11-06 15:31:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:31:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:31:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-06 15:31:34,024 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-06 15:31:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-06 15:31:34,024 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-06 15:31:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:31:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-06 15:31:34,025 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-06 15:31:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:31:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-06 15:31:34,025 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-06 15:31:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:31:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-06 15:31:34,025 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-06 15:31:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:31:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-06 15:31:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-06 15:31:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:31:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:31:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:31:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:31:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-06 15:31:34,027 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-06 15:31:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-06 15:31:34,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-06 15:31:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-06 15:31:34,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-06 15:31:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:31:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 15:31:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:31:34,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:31:56,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:31:56,136 INFO L299 CfgBuilder]: Removed 14858 assume(true) statements. [2021-11-06 15:31:56,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:31:56 BoogieIcfgContainer [2021-11-06 15:31:56,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:31:56,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:31:56,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:31:56,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:31:56,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:31:29" (1/3) ... [2021-11-06 15:31:56,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b578c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:31:56, skipping insertion in model container [2021-11-06 15:31:56,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:31:30" (2/3) ... [2021-11-06 15:31:56,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b578c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:31:56, skipping insertion in model container [2021-11-06 15:31:56,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:31:56" (3/3) ... [2021-11-06 15:31:56,158 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:31:56,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:31:56,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 15:31:56,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:31:56,238 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:31:56,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 15:31:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 11174 states, 11109 states have (on average 1.4384733099288864) internal successors, (15980), 11120 states have internal predecessors, (15980), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:31:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 15:31:56,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:56,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:56,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:31:56,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1615285543, now seen corresponding path program 1 times [2021-11-06 15:31:56,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:56,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309314009] [2021-11-06 15:31:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:56,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:31:56,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:56,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309314009] [2021-11-06 15:31:56,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309314009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:56,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:56,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:31:56,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147264486] [2021-11-06 15:31:56,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:31:56,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:31:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:31:56,676 INFO L87 Difference]: Start difference. First operand has 11174 states, 11109 states have (on average 1.4384733099288864) internal successors, (15980), 11120 states have internal predecessors, (15980), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:31:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:56,948 INFO L93 Difference]: Finished difference Result 22344 states and 32147 transitions. [2021-11-06 15:31:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:31:56,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 15:31:56,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:57,016 INFO L225 Difference]: With dead ends: 22344 [2021-11-06 15:31:57,017 INFO L226 Difference]: Without dead ends: 11157 [2021-11-06 15:31:57,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:31:57,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11157 states. [2021-11-06 15:31:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11157 to 11157. [2021-11-06 15:31:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11157 states, 11093 states have (on average 1.4354097178400793) internal successors, (15923), 11103 states have internal predecessors, (15923), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:31:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11157 states to 11157 states and 16003 transitions. [2021-11-06 15:31:57,505 INFO L78 Accepts]: Start accepts. Automaton has 11157 states and 16003 transitions. Word has length 48 [2021-11-06 15:31:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:31:57,506 INFO L470 AbstractCegarLoop]: Abstraction has 11157 states and 16003 transitions. [2021-11-06 15:31:57,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:31:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11157 states and 16003 transitions. [2021-11-06 15:31:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 15:31:57,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:57,509 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:57,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:31:57,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:31:57,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash -134654241, now seen corresponding path program 1 times [2021-11-06 15:31:57,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:57,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858365461] [2021-11-06 15:31:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:57,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:31:57,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:57,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858365461] [2021-11-06 15:31:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858365461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:57,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:57,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:31:57,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136347381] [2021-11-06 15:31:57,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:31:57,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:57,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:31:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:31:57,649 INFO L87 Difference]: Start difference. First operand 11157 states and 16003 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:00,918 INFO L93 Difference]: Finished difference Result 33404 states and 48012 transitions. [2021-11-06 15:32:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 15:32:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:01,010 INFO L225 Difference]: With dead ends: 33404 [2021-11-06 15:32:01,011 INFO L226 Difference]: Without dead ends: 22275 [2021-11-06 15:32:01,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22275 states. [2021-11-06 15:32:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22275 to 22275. [2021-11-06 15:32:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22275 states, 22151 states have (on average 1.4059861857252494) internal successors, (31144), 22168 states have internal predecessors, (31144), 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) [2021-11-06 15:32:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22275 states to 22275 states and 31336 transitions. [2021-11-06 15:32:01,551 INFO L78 Accepts]: Start accepts. Automaton has 22275 states and 31336 transitions. Word has length 48 [2021-11-06 15:32:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:01,552 INFO L470 AbstractCegarLoop]: Abstraction has 22275 states and 31336 transitions. [2021-11-06 15:32:01,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 22275 states and 31336 transitions. [2021-11-06 15:32:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 15:32:01,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:01,559 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:01,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:32:01,559 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)] === [2021-11-06 15:32:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash 120733418, now seen corresponding path program 1 times [2021-11-06 15:32:01,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:01,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707463516] [2021-11-06 15:32:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:01,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:01,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:01,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707463516] [2021-11-06 15:32:01,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707463516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:01,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:01,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:01,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639867794] [2021-11-06 15:32:01,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:01,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:01,737 INFO L87 Difference]: Start difference. First operand 22275 states and 31336 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:03,771 INFO L93 Difference]: Finished difference Result 66451 states and 93632 transitions. [2021-11-06 15:32:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 15:32:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:03,863 INFO L225 Difference]: With dead ends: 66451 [2021-11-06 15:32:03,864 INFO L226 Difference]: Without dead ends: 44204 [2021-11-06 15:32:03,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44204 states. [2021-11-06 15:32:04,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44204 to 44186. [2021-11-06 15:32:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44186 states, 43942 states have (on average 1.391698147558145) internal successors, (61154), 43973 states have internal predecessors, (61154), 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) [2021-11-06 15:32:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44186 states to 44186 states and 61538 transitions. [2021-11-06 15:32:04,812 INFO L78 Accepts]: Start accepts. Automaton has 44186 states and 61538 transitions. Word has length 49 [2021-11-06 15:32:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:04,813 INFO L470 AbstractCegarLoop]: Abstraction has 44186 states and 61538 transitions. [2021-11-06 15:32:04,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 44186 states and 61538 transitions. [2021-11-06 15:32:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 15:32:04,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:04,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:04,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:32:04,817 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)] === [2021-11-06 15:32:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash -552183735, now seen corresponding path program 1 times [2021-11-06 15:32:04,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:04,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815608743] [2021-11-06 15:32:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:04,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:04,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:04,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815608743] [2021-11-06 15:32:04,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815608743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:04,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:04,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:04,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56409400] [2021-11-06 15:32:04,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:04,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:04,971 INFO L87 Difference]: Start difference. First operand 44186 states and 61538 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:05,487 INFO L93 Difference]: Finished difference Result 44186 states and 61538 transitions. [2021-11-06 15:32:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:05,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-06 15:32:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:05,602 INFO L225 Difference]: With dead ends: 44186 [2021-11-06 15:32:05,603 INFO L226 Difference]: Without dead ends: 44184 [2021-11-06 15:32:05,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44184 states. [2021-11-06 15:32:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44184 to 44184. [2021-11-06 15:32:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44184 states, 43941 states have (on average 1.391684303953028) internal successors, (61152), 43971 states have internal predecessors, (61152), 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) [2021-11-06 15:32:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44184 states to 44184 states and 61536 transitions. [2021-11-06 15:32:06,577 INFO L78 Accepts]: Start accepts. Automaton has 44184 states and 61536 transitions. Word has length 50 [2021-11-06 15:32:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:06,578 INFO L470 AbstractCegarLoop]: Abstraction has 44184 states and 61536 transitions. [2021-11-06 15:32:06,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 44184 states and 61536 transitions. [2021-11-06 15:32:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 15:32:06,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:06,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:06,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:32:06,581 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)] === [2021-11-06 15:32:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 62221012, now seen corresponding path program 1 times [2021-11-06 15:32:06,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:06,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789591037] [2021-11-06 15:32:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:06,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:06,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:06,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789591037] [2021-11-06 15:32:06,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789591037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:06,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:06,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:32:06,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343727078] [2021-11-06 15:32:06,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:06,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:06,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:06,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:06,690 INFO L87 Difference]: Start difference. First operand 44184 states and 61536 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:07,447 INFO L93 Difference]: Finished difference Result 44184 states and 61536 transitions. [2021-11-06 15:32:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 15:32:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:07,517 INFO L225 Difference]: With dead ends: 44184 [2021-11-06 15:32:07,518 INFO L226 Difference]: Without dead ends: 38188 [2021-11-06 15:32:07,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38188 states. [2021-11-06 15:32:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38188 to 38188. [2021-11-06 15:32:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38188 states, 37946 states have (on average 1.3996995730775312) internal successors, (53113), 37975 states have internal predecessors, (53113), 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) [2021-11-06 15:32:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38188 states to 38188 states and 53497 transitions. [2021-11-06 15:32:08,277 INFO L78 Accepts]: Start accepts. Automaton has 38188 states and 53497 transitions. Word has length 51 [2021-11-06 15:32:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:08,277 INFO L470 AbstractCegarLoop]: Abstraction has 38188 states and 53497 transitions. [2021-11-06 15:32:08,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 38188 states and 53497 transitions. [2021-11-06 15:32:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 15:32:08,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:08,290 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:08,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:32:08,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:32:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1013174417, now seen corresponding path program 1 times [2021-11-06 15:32:08,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:08,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300241523] [2021-11-06 15:32:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:08,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:08,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:08,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300241523] [2021-11-06 15:32:08,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300241523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:08,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:08,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:32:08,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144318940] [2021-11-06 15:32:08,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:08,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:08,394 INFO L87 Difference]: Start difference. First operand 38188 states and 53497 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:09,430 INFO L93 Difference]: Finished difference Result 91891 states and 128734 transitions. [2021-11-06 15:32:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:09,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-06 15:32:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:09,543 INFO L225 Difference]: With dead ends: 91891 [2021-11-06 15:32:09,543 INFO L226 Difference]: Without dead ends: 53731 [2021-11-06 15:32:09,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53731 states. [2021-11-06 15:32:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53731 to 53716. [2021-11-06 15:32:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53716 states, 53234 states have (on average 1.3991246196040126) internal successors, (74481), 53291 states have internal predecessors, (74481), 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) [2021-11-06 15:32:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53716 states to 53716 states and 75249 transitions. [2021-11-06 15:32:10,775 INFO L78 Accepts]: Start accepts. Automaton has 53716 states and 75249 transitions. Word has length 76 [2021-11-06 15:32:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:10,776 INFO L470 AbstractCegarLoop]: Abstraction has 53716 states and 75249 transitions. [2021-11-06 15:32:10,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 53716 states and 75249 transitions. [2021-11-06 15:32:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 15:32:10,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:10,807 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:10,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:32:10,807 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:32:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2014516997, now seen corresponding path program 1 times [2021-11-06 15:32:10,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:10,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785253363] [2021-11-06 15:32:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:10,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:32:11,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:11,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785253363] [2021-11-06 15:32:11,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785253363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:11,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:11,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:32:11,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789954784] [2021-11-06 15:32:11,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:32:11,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:32:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:32:11,188 INFO L87 Difference]: Start difference. First operand 53716 states and 75249 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:12,985 INFO L93 Difference]: Finished difference Result 131288 states and 184033 transitions. [2021-11-06 15:32:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:32:12,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 [2021-11-06 15:32:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:13,178 INFO L225 Difference]: With dead ends: 131288 [2021-11-06 15:32:13,178 INFO L226 Difference]: Without dead ends: 77600 [2021-11-06 15:32:13,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:32:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77600 states. [2021-11-06 15:32:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77600 to 53730. [2021-11-06 15:32:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53730 states, 53248 states have (on average 1.3990196814903846) internal successors, (74495), 53305 states have internal predecessors, (74495), 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) [2021-11-06 15:32:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53730 states to 53730 states and 75263 transitions. [2021-11-06 15:32:14,835 INFO L78 Accepts]: Start accepts. Automaton has 53730 states and 75263 transitions. Word has length 103 [2021-11-06 15:32:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:14,835 INFO L470 AbstractCegarLoop]: Abstraction has 53730 states and 75263 transitions. [2021-11-06 15:32:14,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 53730 states and 75263 transitions. [2021-11-06 15:32:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 15:32:14,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:14,864 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:14,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:32:14,864 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:32:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1358171202, now seen corresponding path program 1 times [2021-11-06 15:32:14,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:14,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309627755] [2021-11-06 15:32:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:14,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:32:14,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:14,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309627755] [2021-11-06 15:32:14,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309627755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:14,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:14,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:32:14,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857959177] [2021-11-06 15:32:15,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:32:15,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:32:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:15,001 INFO L87 Difference]: Start difference. First operand 53730 states and 75263 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:18,746 INFO L93 Difference]: Finished difference Result 123064 states and 172586 transitions. [2021-11-06 15:32:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:32:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-06 15:32:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:19,102 INFO L225 Difference]: With dead ends: 123064 [2021-11-06 15:32:19,102 INFO L226 Difference]: Without dead ends: 69362 [2021-11-06 15:32:19,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:32:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69362 states. [2021-11-06 15:32:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69362 to 69362. [2021-11-06 15:32:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69362 states, 68400 states have (on average 1.4005994152046783) internal successors, (95801), 68513 states have internal predecessors, (95801), 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) [2021-11-06 15:32:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69362 states to 69362 states and 97337 transitions. [2021-11-06 15:32:20,778 INFO L78 Accepts]: Start accepts. Automaton has 69362 states and 97337 transitions. Word has length 107 [2021-11-06 15:32:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:20,778 INFO L470 AbstractCegarLoop]: Abstraction has 69362 states and 97337 transitions. [2021-11-06 15:32:20,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 69362 states and 97337 transitions. [2021-11-06 15:32:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 15:32:20,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:20,827 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:20,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:32:20,828 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:32:20,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2046393895, now seen corresponding path program 1 times [2021-11-06 15:32:20,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:20,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243178245] [2021-11-06 15:32:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:20,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:32:20,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:20,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243178245] [2021-11-06 15:32:20,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243178245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:20,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:20,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:32:20,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152155351] [2021-11-06 15:32:20,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:32:20,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:32:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:32:20,936 INFO L87 Difference]: Start difference. First operand 69362 states and 97337 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:24,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:24,927 INFO L93 Difference]: Finished difference Result 116755 states and 163689 transitions. [2021-11-06 15:32:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:32:24,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 122 [2021-11-06 15:32:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:25,026 INFO L225 Difference]: With dead ends: 116755 [2021-11-06 15:32:25,026 INFO L226 Difference]: Without dead ends: 42423 [2021-11-06 15:32:25,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:32:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42423 states. [2021-11-06 15:32:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42423 to 40420. [2021-11-06 15:32:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40420 states, 39818 states have (on average 1.403988146064594) internal successors, (55904), 39889 states have internal predecessors, (55904), 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) [2021-11-06 15:32:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40420 states to 40420 states and 56864 transitions. [2021-11-06 15:32:26,346 INFO L78 Accepts]: Start accepts. Automaton has 40420 states and 56864 transitions. Word has length 122 [2021-11-06 15:32:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:26,347 INFO L470 AbstractCegarLoop]: Abstraction has 40420 states and 56864 transitions. [2021-11-06 15:32:26,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:32:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 40420 states and 56864 transitions. [2021-11-06 15:32:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 15:32:26,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:26,399 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:26,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:32:26,399 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:32:26,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1883063057, now seen corresponding path program 1 times [2021-11-06 15:32:26,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:26,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714151182] [2021-11-06 15:32:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:26,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-06 15:32:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:32:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:32:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:26,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:32:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:32:26,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:26,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714151182] [2021-11-06 15:32:26,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714151182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:26,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:26,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:32:26,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389121007] [2021-11-06 15:32:26,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:32:26,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:32:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:32:26,593 INFO L87 Difference]: Start difference. First operand 40420 states and 56864 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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)