./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.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 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:00:12,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:00:12,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:00:12,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:00:12,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:00:12,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:00:12,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:00:12,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:00:12,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:00:12,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:00:12,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:00:12,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:00:12,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:00:12,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:00:12,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:00:12,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:00:12,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:00:12,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:00:12,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:00:12,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:00:12,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:00:12,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:00:12,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:00:12,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:00:12,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:00:12,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:00:12,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:00:12,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:00:12,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:00:12,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:00:12,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:00:12,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:00:12,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:00:12,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:00:12,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:00:12,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:00:12,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:00:12,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:00:12,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:00:12,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:00:12,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:00:12,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:00:12,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:00:12,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:00:12,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:00:12,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:00:12,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:00:12,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:00:12,495 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:00:12,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:00:12,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:00:12,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:00:12,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:00:12,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:00:12,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:00:12,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:00:12,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:00:12,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:00:12,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:00:12,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:00:12,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:00:12,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:00:12,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:00:12,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:00:12,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:00:12,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:00:12,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:00:12,499 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:00:12,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:00:12,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:00:12,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:00:12,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c [2021-11-05 16:00:12,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:00:12,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:00:12,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:00:12,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:00:12,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:00:12,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-05 16:00:12,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ee8a5b/de8a5046a701400bb033441693ed3a43/FLAG161d0ee64 [2021-11-05 16:00:13,472 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:00:13,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-05 16:00:13,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ee8a5b/de8a5046a701400bb033441693ed3a43/FLAG161d0ee64 [2021-11-05 16:00:13,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ee8a5b/de8a5046a701400bb033441693ed3a43 [2021-11-05 16:00:13,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:00:13,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:00:13,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:00:13,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:00:13,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:00:13,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:00:13" (1/1) ... [2021-11-05 16:00:13,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42944279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:13, skipping insertion in model container [2021-11-05 16:00:13,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:00:13" (1/1) ... [2021-11-05 16:00:13,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:00:13,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:00:14,455 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-05 16:00:14,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:00:14,893 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:00:14,946 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-05 16:00:15,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:00:15,139 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:00:15,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15 WrapperNode [2021-11-05 16:00:15,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:00:15,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:00:15,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:00:15,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:00:15,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:15,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:15,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:00:15,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:00:15,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:00:15,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:00:15,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:15,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:15,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:15,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:16,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:16,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:16,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:16,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:00:16,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:00:16,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:00:16,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:00:16,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (1/1) ... [2021-11-05 16:00:16,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:00:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:00:16,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 16:00:16,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 16:00:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:00:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:00:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:00:16,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:00:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:00:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:00:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-05 16:00:16,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-05 16:00:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:00:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:00:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:00:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:00:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:00:16,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:00:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2021-11-05 16:00:16,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2021-11-05 16:00:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:00:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:00:16,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:00:32,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:00:32,014 INFO L299 CfgBuilder]: Removed 2529 assume(true) statements. [2021-11-05 16:00:32,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:00:32 BoogieIcfgContainer [2021-11-05 16:00:32,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:00:32,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:00:32,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:00:32,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:00:32,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:00:13" (1/3) ... [2021-11-05 16:00:32,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f444b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:00:32, skipping insertion in model container [2021-11-05 16:00:32,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:00:15" (2/3) ... [2021-11-05 16:00:32,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f444b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:00:32, skipping insertion in model container [2021-11-05 16:00:32,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:00:32" (3/3) ... [2021-11-05 16:00:32,024 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-05 16:00:32,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:00:32,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 16:00:32,072 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:00:32,077 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 16:00:32,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 16:00:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 2894 states, 2873 states have (on average 1.4246432300730942) internal successors, (4093), 2879 states have internal predecessors, (4093), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-05 16:00:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 16:00:32,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:32,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:32,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:32,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1256768685, now seen corresponding path program 1 times [2021-11-05 16:00:32,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:32,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256193258] [2021-11-05 16:00:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:32,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:32,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:32,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256193258] [2021-11-05 16:00:32,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256193258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:32,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:32,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:00:32,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833397530] [2021-11-05 16:00:32,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:32,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:32,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:32,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:32,619 INFO L87 Difference]: Start difference. First operand has 2894 states, 2873 states have (on average 1.4246432300730942) internal successors, (4093), 2879 states have internal predecessors, (4093), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:34,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:00:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:35,106 INFO L93 Difference]: Finished difference Result 8456 states and 12037 transitions. [2021-11-05 16:00:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-05 16:00:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:35,132 INFO L225 Difference]: With dead ends: 8456 [2021-11-05 16:00:35,132 INFO L226 Difference]: Without dead ends: 5533 [2021-11-05 16:00:35,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:35,142 INFO L933 BasicCegarLoop]: 4069 mSDtfsCounter, 3796 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2104.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3796 SdHoareTripleChecker+Valid, 8108 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2239.20ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:35,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3796 Valid, 8108 Invalid, 15 Unknown, 0 Unchecked, 42.04ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2239.20ms Time] [2021-11-05 16:00:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-11-05 16:00:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2021-11-05 16:00:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 5498 states have (on average 1.4099672608221172) internal successors, (7752), 5504 states have internal predecessors, (7752), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-05 16:00:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 7796 transitions. [2021-11-05 16:00:35,436 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 7796 transitions. Word has length 71 [2021-11-05 16:00:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:35,437 INFO L470 AbstractCegarLoop]: Abstraction has 5533 states and 7796 transitions. [2021-11-05 16:00:35,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 7796 transitions. [2021-11-05 16:00:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 16:00:35,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:35,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:35,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:00:35,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 317054977, now seen corresponding path program 1 times [2021-11-05 16:00:35,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:35,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278784635] [2021-11-05 16:00:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:35,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:35,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:35,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278784635] [2021-11-05 16:00:35,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278784635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:35,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:35,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:00:35,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227170179] [2021-11-05 16:00:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:35,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:35,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:35,835 INFO L87 Difference]: Start difference. First operand 5533 states and 7796 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:36,093 INFO L93 Difference]: Finished difference Result 16347 states and 23153 transitions. [2021-11-05 16:00:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:36,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78 [2021-11-05 16:00:36,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:36,129 INFO L225 Difference]: With dead ends: 16347 [2021-11-05 16:00:36,129 INFO L226 Difference]: Without dead ends: 10939 [2021-11-05 16:00:36,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:36,144 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 3949 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3949 SdHoareTripleChecker+Valid, 8584 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.82ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.73ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:36,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3949 Valid, 8584 Invalid, 57 Unknown, 0 Unchecked, 12.82ms Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 71.73ms Time] [2021-11-05 16:00:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-11-05 16:00:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10927. [2021-11-05 16:00:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10927 states, 10862 states have (on average 1.4106978457006076) internal successors, (15323), 10870 states have internal predecessors, (15323), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-05 16:00:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10927 states to 10927 states and 15433 transitions. [2021-11-05 16:00:36,410 INFO L78 Accepts]: Start accepts. Automaton has 10927 states and 15433 transitions. Word has length 78 [2021-11-05 16:00:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:36,412 INFO L470 AbstractCegarLoop]: Abstraction has 10927 states and 15433 transitions. [2021-11-05 16:00:36,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10927 states and 15433 transitions. [2021-11-05 16:00:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 16:00:36,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:36,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:36,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:00:36,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:36,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1238777568, now seen corresponding path program 1 times [2021-11-05 16:00:36,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:36,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469517206] [2021-11-05 16:00:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:36,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:36,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:36,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469517206] [2021-11-05 16:00:36,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469517206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:36,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:36,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:00:36,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135572396] [2021-11-05 16:00:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:36,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:36,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:36,611 INFO L87 Difference]: Start difference. First operand 10927 states and 15433 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:36,749 INFO L93 Difference]: Finished difference Result 10927 states and 15433 transitions. [2021-11-05 16:00:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:36,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-05 16:00:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:36,810 INFO L225 Difference]: With dead ends: 10927 [2021-11-05 16:00:36,810 INFO L226 Difference]: Without dead ends: 10925 [2021-11-05 16:00:36,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:36,822 INFO L933 BasicCegarLoop]: 4024 mSDtfsCounter, 3948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.60ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:36,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3948 Valid, 4024 Invalid, 1 Unknown, 0 Unchecked, 7.71ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.60ms Time] [2021-11-05 16:00:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10925 states. [2021-11-05 16:00:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10925 to 10925. [2021-11-05 16:00:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10925 states, 10861 states have (on average 1.4106435871466716) internal successors, (15321), 10868 states have internal predecessors, (15321), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-05 16:00:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10925 states to 10925 states and 15431 transitions. [2021-11-05 16:00:37,221 INFO L78 Accepts]: Start accepts. Automaton has 10925 states and 15431 transitions. Word has length 79 [2021-11-05 16:00:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:37,222 INFO L470 AbstractCegarLoop]: Abstraction has 10925 states and 15431 transitions. [2021-11-05 16:00:37,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 10925 states and 15431 transitions. [2021-11-05 16:00:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 16:00:37,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:37,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:37,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:00:37,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -252593173, now seen corresponding path program 1 times [2021-11-05 16:00:37,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:37,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913325234] [2021-11-05 16:00:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:37,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:37,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:37,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913325234] [2021-11-05 16:00:37,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913325234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:37,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:37,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:00:37,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226412831] [2021-11-05 16:00:37,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:37,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:37,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:37,444 INFO L87 Difference]: Start difference. First operand 10925 states and 15431 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:37,589 INFO L93 Difference]: Finished difference Result 10925 states and 15431 transitions. [2021-11-05 16:00:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-11-05 16:00:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:37,611 INFO L225 Difference]: With dead ends: 10925 [2021-11-05 16:00:37,611 INFO L226 Difference]: Without dead ends: 10923 [2021-11-05 16:00:37,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:37,616 INFO L933 BasicCegarLoop]: 4022 mSDtfsCounter, 3945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 4022 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.98ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:37,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3945 Valid, 4022 Invalid, 1 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.98ms Time] [2021-11-05 16:00:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2021-11-05 16:00:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 10923. [2021-11-05 16:00:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10860 states have (on average 1.4105893186003684) internal successors, (15319), 10866 states have internal predecessors, (15319), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-05 16:00:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 15429 transitions. [2021-11-05 16:00:37,812 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 15429 transitions. Word has length 80 [2021-11-05 16:00:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:37,814 INFO L470 AbstractCegarLoop]: Abstraction has 10923 states and 15429 transitions. [2021-11-05 16:00:37,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 15429 transitions. [2021-11-05 16:00:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 16:00:37,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:37,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:37,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:00:37,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash 759554122, now seen corresponding path program 1 times [2021-11-05 16:00:37,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:37,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424427274] [2021-11-05 16:00:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:37,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:37,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:37,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424427274] [2021-11-05 16:00:37,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424427274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:37,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:37,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:00:37,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887761395] [2021-11-05 16:00:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:37,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:37,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:37,956 INFO L87 Difference]: Start difference. First operand 10923 states and 15429 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:38,198 INFO L93 Difference]: Finished difference Result 10923 states and 15429 transitions. [2021-11-05 16:00:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:38,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-05 16:00:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:38,219 INFO L225 Difference]: With dead ends: 10923 [2021-11-05 16:00:38,219 INFO L226 Difference]: Without dead ends: 10921 [2021-11-05 16:00:38,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:38,222 INFO L933 BasicCegarLoop]: 4020 mSDtfsCounter, 3942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3942 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:38,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3942 Valid, 4020 Invalid, 1 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.29ms Time] [2021-11-05 16:00:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2021-11-05 16:00:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 10921. [2021-11-05 16:00:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 10859 states have (on average 1.4105350400589374) internal successors, (15317), 10864 states have internal predecessors, (15317), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-05 16:00:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 15427 transitions. [2021-11-05 16:00:38,489 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 15427 transitions. Word has length 81 [2021-11-05 16:00:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:38,489 INFO L470 AbstractCegarLoop]: Abstraction has 10921 states and 15427 transitions. [2021-11-05 16:00:38,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 15427 transitions. [2021-11-05 16:00:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 16:00:38,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:38,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:38,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:00:38,492 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:38,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2071349205, now seen corresponding path program 1 times [2021-11-05 16:00:38,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:38,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668724479] [2021-11-05 16:00:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:38,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:38,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:38,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668724479] [2021-11-05 16:00:38,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668724479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:38,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:38,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:00:38,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537965591] [2021-11-05 16:00:38,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:38,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:38,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:38,631 INFO L87 Difference]: Start difference. First operand 10921 states and 15427 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:38,831 INFO L93 Difference]: Finished difference Result 10921 states and 15427 transitions. [2021-11-05 16:00:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:38,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-05 16:00:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:38,852 INFO L225 Difference]: With dead ends: 10921 [2021-11-05 16:00:38,853 INFO L226 Difference]: Without dead ends: 10912 [2021-11-05 16:00:38,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:38,858 INFO L933 BasicCegarLoop]: 4019 mSDtfsCounter, 3939 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:38,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3939 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:00:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2021-11-05 16:00:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10912. [2021-11-05 16:00:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10851 states have (on average 1.4104690811906737) internal successors, (15305), 10855 states have internal predecessors, (15305), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-05 16:00:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 15415 transitions. [2021-11-05 16:00:39,179 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 15415 transitions. Word has length 82 [2021-11-05 16:00:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:39,179 INFO L470 AbstractCegarLoop]: Abstraction has 10912 states and 15415 transitions. [2021-11-05 16:00:39,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 15415 transitions. [2021-11-05 16:00:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 16:00:39,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:39,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:39,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:00:39,191 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1181693351, now seen corresponding path program 1 times [2021-11-05 16:00:39,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:39,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149264316] [2021-11-05 16:00:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:39,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:00:39,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:39,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149264316] [2021-11-05 16:00:39,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149264316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:39,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:39,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:00:39,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739194286] [2021-11-05 16:00:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:39,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:39,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:39,346 INFO L87 Difference]: Start difference. First operand 10912 states and 15415 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:39,812 INFO L93 Difference]: Finished difference Result 28473 states and 40498 transitions. [2021-11-05 16:00:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:39,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2021-11-05 16:00:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:39,843 INFO L225 Difference]: With dead ends: 28473 [2021-11-05 16:00:39,844 INFO L226 Difference]: Without dead ends: 17686 [2021-11-05 16:00:39,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:39,861 INFO L933 BasicCegarLoop]: 4020 mSDtfsCounter, 2596 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 7862 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.03ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2596 Valid, 7862 Invalid, 24 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 60.03ms Time] [2021-11-05 16:00:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17686 states. [2021-11-05 16:00:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17686 to 17678. [2021-11-05 16:00:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17617 states have (on average 1.4254413350740762) internal successors, (25112), 17621 states have internal predecessors, (25112), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-05 16:00:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 25222 transitions. [2021-11-05 16:00:40,236 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 25222 transitions. Word has length 139 [2021-11-05 16:00:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:40,237 INFO L470 AbstractCegarLoop]: Abstraction has 17678 states and 25222 transitions. [2021-11-05 16:00:40,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 25222 transitions. [2021-11-05 16:00:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 16:00:40,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:40,254 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:40,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:00:40,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1278191310, now seen corresponding path program 1 times [2021-11-05 16:00:40,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:40,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426300499] [2021-11-05 16:00:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:40,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:40,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:40,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426300499] [2021-11-05 16:00:40,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426300499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:40,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:40,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:00:40,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912556898] [2021-11-05 16:00:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:40,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:00:40,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:00:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:40,393 INFO L87 Difference]: Start difference. First operand 17678 states and 25222 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:42,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:00:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:42,795 INFO L93 Difference]: Finished difference Result 28230 states and 40311 transitions. [2021-11-05 16:00:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:00:42,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 162 [2021-11-05 16:00:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:42,813 INFO L225 Difference]: With dead ends: 28230 [2021-11-05 16:00:42,813 INFO L226 Difference]: Without dead ends: 10676 [2021-11-05 16:00:42,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:00:42,838 INFO L933 BasicCegarLoop]: 4016 mSDtfsCounter, 3 mSDsluCounter, 4009 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2036.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8025 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2163.05ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:42,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 8025 Invalid, 6 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2163.05ms Time] [2021-11-05 16:00:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10676 states. [2021-11-05 16:00:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10676 to 10673. [2021-11-05 16:00:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10673 states, 10642 states have (on average 1.4263296372862244) internal successors, (15179), 10644 states have internal predecessors, (15179), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:00:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10673 states to 10673 states and 15234 transitions. [2021-11-05 16:00:43,047 INFO L78 Accepts]: Start accepts. Automaton has 10673 states and 15234 transitions. Word has length 162 [2021-11-05 16:00:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:43,047 INFO L470 AbstractCegarLoop]: Abstraction has 10673 states and 15234 transitions. [2021-11-05 16:00:43,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10673 states and 15234 transitions. [2021-11-05 16:00:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-05 16:00:43,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:43,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:43,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:00:43,058 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1388499896, now seen corresponding path program 1 times [2021-11-05 16:00:43,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:43,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93858750] [2021-11-05 16:00:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:43,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:43,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:43,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93858750] [2021-11-05 16:00:43,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93858750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:43,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:43,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:00:43,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595452876] [2021-11-05 16:00:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:43,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:00:43,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:43,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:00:43,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:00:43,252 INFO L87 Difference]: Start difference. First operand 10673 states and 15234 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:43,825 INFO L93 Difference]: Finished difference Result 33963 states and 48643 transitions. [2021-11-05 16:00:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:00:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 184 [2021-11-05 16:00:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:43,878 INFO L225 Difference]: With dead ends: 33963 [2021-11-05 16:00:43,878 INFO L226 Difference]: Without dead ends: 25107 [2021-11-05 16:00:43,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:00:43,902 INFO L933 BasicCegarLoop]: 6769 mSDtfsCounter, 8168 mSDsluCounter, 10734 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8172 SdHoareTripleChecker+Valid, 17503 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.84ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:43,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8172 Valid, 17503 Invalid, 45 Unknown, 0 Unchecked, 61.37ms Time], IncrementalHoareTripleChecker [13 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 50.84ms Time] [2021-11-05 16:00:43,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25107 states. [2021-11-05 16:00:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25107 to 10677. [2021-11-05 16:00:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10677 states, 10646 states have (on average 1.4261694533157994) internal successors, (15183), 10648 states have internal predecessors, (15183), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:00:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10677 states to 10677 states and 15238 transitions. [2021-11-05 16:00:44,236 INFO L78 Accepts]: Start accepts. Automaton has 10677 states and 15238 transitions. Word has length 184 [2021-11-05 16:00:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:44,236 INFO L470 AbstractCegarLoop]: Abstraction has 10677 states and 15238 transitions. [2021-11-05 16:00:44,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10677 states and 15238 transitions. [2021-11-05 16:00:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-05 16:00:44,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:44,249 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:44,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:00:44,250 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 278785786, now seen corresponding path program 1 times [2021-11-05 16:00:44,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:44,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594758504] [2021-11-05 16:00:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:44,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:44,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:44,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594758504] [2021-11-05 16:00:44,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594758504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:44,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:44,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:00:44,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478613724] [2021-11-05 16:00:44,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:44,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:00:44,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:00:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:00:44,436 INFO L87 Difference]: Start difference. First operand 10677 states and 15238 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:45,364 INFO L93 Difference]: Finished difference Result 41315 states and 59194 transitions. [2021-11-05 16:00:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:00:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 206 [2021-11-05 16:00:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:45,422 INFO L225 Difference]: With dead ends: 41315 [2021-11-05 16:00:45,422 INFO L226 Difference]: Without dead ends: 32455 [2021-11-05 16:00:45,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.84ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:00:45,448 INFO L933 BasicCegarLoop]: 6835 mSDtfsCounter, 16490 mSDsluCounter, 20266 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16494 SdHoareTripleChecker+Valid, 27101 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.43ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.58ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:45,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16494 Valid, 27101 Invalid, 38 Unknown, 0 Unchecked, 33.43ms Time], IncrementalHoareTripleChecker [22 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 33.58ms Time] [2021-11-05 16:00:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32455 states. [2021-11-05 16:00:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32455 to 10683. [2021-11-05 16:00:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10652 states have (on average 1.4259294029290275) internal successors, (15189), 10654 states have internal predecessors, (15189), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:00:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 15244 transitions. [2021-11-05 16:00:45,859 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 15244 transitions. Word has length 206 [2021-11-05 16:00:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:45,859 INFO L470 AbstractCegarLoop]: Abstraction has 10683 states and 15244 transitions. [2021-11-05 16:00:45,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 15244 transitions. [2021-11-05 16:00:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-05 16:00:45,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:45,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:45,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 16:00:45,873 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash -130836703, now seen corresponding path program 1 times [2021-11-05 16:00:45,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:45,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301494989] [2021-11-05 16:00:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:45,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:46,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:46,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301494989] [2021-11-05 16:00:46,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301494989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:46,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:46,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:00:46,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529439834] [2021-11-05 16:00:46,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:46,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:00:46,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:46,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:00:46,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:00:46,052 INFO L87 Difference]: Start difference. First operand 10683 states and 15244 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:47,046 INFO L93 Difference]: Finished difference Result 41351 states and 59238 transitions. [2021-11-05 16:00:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:00:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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 208 [2021-11-05 16:00:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:47,099 INFO L225 Difference]: With dead ends: 41351 [2021-11-05 16:00:47,100 INFO L226 Difference]: Without dead ends: 32485 [2021-11-05 16:00:47,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.19ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:00:47,132 INFO L933 BasicCegarLoop]: 6828 mSDtfsCounter, 16573 mSDsluCounter, 20338 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16577 SdHoareTripleChecker+Valid, 27166 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.40ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.60ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:47,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16577 Valid, 27166 Invalid, 38 Unknown, 0 Unchecked, 33.40ms Time], IncrementalHoareTripleChecker [22 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 50.60ms Time] [2021-11-05 16:00:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32485 states. [2021-11-05 16:00:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32485 to 10689. [2021-11-05 16:00:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10658 states have (on average 1.42568962281854) internal successors, (15195), 10660 states have internal predecessors, (15195), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:00:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 15250 transitions. [2021-11-05 16:00:47,695 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 15250 transitions. Word has length 208 [2021-11-05 16:00:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:47,695 INFO L470 AbstractCegarLoop]: Abstraction has 10689 states and 15250 transitions. [2021-11-05 16:00:47,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 15250 transitions. [2021-11-05 16:00:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-05 16:00:47,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:47,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:47,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 16:00:47,708 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2010053830, now seen corresponding path program 1 times [2021-11-05 16:00:47,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:47,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983242381] [2021-11-05 16:00:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:47,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:47,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:47,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983242381] [2021-11-05 16:00:47,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983242381] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:00:47,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564032824] [2021-11-05 16:00:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:47,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:00:47,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:00:47,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:00:47,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:00:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:48,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:00:48,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:00:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:49,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:00:49,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564032824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:49,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:00:49,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-05 16:00:49,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474973271] [2021-11-05 16:00:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:49,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:00:49,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:00:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:00:49,310 INFO L87 Difference]: Start difference. First operand 10689 states and 15250 transitions. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:51,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:00:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:54,691 INFO L93 Difference]: Finished difference Result 72301 states and 103612 transitions. [2021-11-05 16:00:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 16:00:54,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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 210 [2021-11-05 16:00:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:54,811 INFO L225 Difference]: With dead ends: 72301 [2021-11-05 16:00:54,812 INFO L226 Difference]: Without dead ends: 63429 [2021-11-05 16:00:54,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 208.62ms TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-05 16:00:54,859 INFO L933 BasicCegarLoop]: 13445 mSDtfsCounter, 26086 mSDsluCounter, 52365 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2273.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26090 SdHoareTripleChecker+Valid, 65810 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.51ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2493.34ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:54,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26090 Valid, 65810 Invalid, 289 Unknown, 0 Unchecked, 80.51ms Time], IncrementalHoareTripleChecker [72 Valid, 216 Invalid, 1 Unknown, 0 Unchecked, 2493.34ms Time] [2021-11-05 16:00:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63429 states. [2021-11-05 16:00:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63429 to 10719. [2021-11-05 16:00:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10688 states have (on average 1.4245883233532934) internal successors, (15226), 10690 states have internal predecessors, (15226), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:00:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15281 transitions. [2021-11-05 16:00:55,716 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15281 transitions. Word has length 210 [2021-11-05 16:00:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:55,718 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 15281 transitions. [2021-11-05 16:00:55,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15281 transitions. [2021-11-05 16:00:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-05 16:00:55,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:55,729 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:55,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 16:00:55,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-05 16:00:55,944 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 595969724, now seen corresponding path program 1 times [2021-11-05 16:00:55,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:55,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388849983] [2021-11-05 16:00:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:55,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:56,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:56,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388849983] [2021-11-05 16:00:56,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388849983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:56,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:56,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:00:56,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9525335] [2021-11-05 16:00:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:56,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:00:56,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:00:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:00:56,266 INFO L87 Difference]: Start difference. First operand 10719 states and 15281 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:57,274 INFO L93 Difference]: Finished difference Result 28081 states and 40042 transitions. [2021-11-05 16:00:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:00:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 210 [2021-11-05 16:00:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:57,305 INFO L225 Difference]: With dead ends: 28081 [2021-11-05 16:00:57,306 INFO L226 Difference]: Without dead ends: 19175 [2021-11-05 16:00:57,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:00:57,324 INFO L933 BasicCegarLoop]: 6715 mSDtfsCounter, 3543 mSDsluCounter, 10682 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 17397 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.51ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.13ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:57,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3549 Valid, 17397 Invalid, 76 Unknown, 0 Unchecked, 16.51ms Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 68.13ms Time] [2021-11-05 16:00:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19175 states. [2021-11-05 16:00:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19175 to 10719. [2021-11-05 16:00:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10688 states have (on average 1.4244011976047903) internal successors, (15224), 10690 states have internal predecessors, (15224), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:00:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15279 transitions. [2021-11-05 16:00:57,965 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15279 transitions. Word has length 210 [2021-11-05 16:00:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:00:57,965 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 15279 transitions. [2021-11-05 16:00:57,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:00:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15279 transitions. [2021-11-05 16:00:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-05 16:00:57,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:00:57,975 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:00:57,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 16:00:57,975 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:00:57,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:00:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash 213664640, now seen corresponding path program 1 times [2021-11-05 16:00:57,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:00:57,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005915822] [2021-11-05 16:00:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:00:57,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:00:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:00:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:00:58,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:00:58,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005915822] [2021-11-05 16:00:58,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005915822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:00:58,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:00:58,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 16:00:58,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499688575] [2021-11-05 16:00:58,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:00:58,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:00:58,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:00:58,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:00:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:00:58,311 INFO L87 Difference]: Start difference. First operand 10719 states and 15279 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:01:01,749 INFO L93 Difference]: Finished difference Result 58861 states and 84238 transitions. [2021-11-05 16:01:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 16:01:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 212 [2021-11-05 16:01:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:01:01,874 INFO L225 Difference]: With dead ends: 58861 [2021-11-05 16:01:01,874 INFO L226 Difference]: Without dead ends: 49959 [2021-11-05 16:01:01,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 94.70ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:01:01,902 INFO L933 BasicCegarLoop]: 6813 mSDtfsCounter, 34202 mSDsluCounter, 42281 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34208 SdHoareTripleChecker+Valid, 49094 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.65ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.30ms IncrementalHoareTripleChecker+Time [2021-11-05 16:01:01,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34208 Valid, 49094 Invalid, 285 Unknown, 0 Unchecked, 65.65ms Time], IncrementalHoareTripleChecker [89 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 249.30ms Time] [2021-11-05 16:01:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49959 states. [2021-11-05 16:01:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49959 to 10729. [2021-11-05 16:01:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10729 states, 10698 states have (on average 1.4240044868199664) internal successors, (15234), 10700 states have internal predecessors, (15234), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:01:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10729 states to 10729 states and 15289 transitions. [2021-11-05 16:01:02,824 INFO L78 Accepts]: Start accepts. Automaton has 10729 states and 15289 transitions. Word has length 212 [2021-11-05 16:01:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:01:02,825 INFO L470 AbstractCegarLoop]: Abstraction has 10729 states and 15289 transitions. [2021-11-05 16:01:02,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10729 states and 15289 transitions. [2021-11-05 16:01:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-05 16:01:02,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:01:02,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:01:02,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 16:01:02,835 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:01:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:01:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1253720964, now seen corresponding path program 1 times [2021-11-05 16:01:02,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:01:02,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224678757] [2021-11-05 16:01:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:01:02,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:01:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:01:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:01:03,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:01:03,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224678757] [2021-11-05 16:01:03,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224678757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:01:03,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:01:03,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:01:03,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737484300] [2021-11-05 16:01:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:01:03,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:01:03,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:01:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:01:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:01:03,068 INFO L87 Difference]: Start difference. First operand 10729 states and 15289 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:01:04,244 INFO L93 Difference]: Finished difference Result 26901 states and 38410 transitions. [2021-11-05 16:01:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:01:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 214 [2021-11-05 16:01:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:01:04,274 INFO L225 Difference]: With dead ends: 26901 [2021-11-05 16:01:04,275 INFO L226 Difference]: Without dead ends: 17989 [2021-11-05 16:01:04,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:01:04,296 INFO L933 BasicCegarLoop]: 6758 mSDtfsCounter, 5497 mSDsluCounter, 8025 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 14783 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.62ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.76ms IncrementalHoareTripleChecker+Time [2021-11-05 16:01:04,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5497 Valid, 14783 Invalid, 22 Unknown, 0 Unchecked, 13.62ms Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 25.76ms Time] [2021-11-05 16:01:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17989 states. [2021-11-05 16:01:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17989 to 10733. [2021-11-05 16:01:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 10702 states have (on average 1.4238460100915717) internal successors, (15238), 10704 states have internal predecessors, (15238), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:01:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15293 transitions. [2021-11-05 16:01:05,083 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15293 transitions. Word has length 214 [2021-11-05 16:01:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:01:05,084 INFO L470 AbstractCegarLoop]: Abstraction has 10733 states and 15293 transitions. [2021-11-05 16:01:05,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15293 transitions. [2021-11-05 16:01:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-05 16:01:05,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:01:05,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:01:05,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 16:01:05,100 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:01:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:01:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2082002527, now seen corresponding path program 1 times [2021-11-05 16:01:05,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:01:05,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174369165] [2021-11-05 16:01:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:01:05,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:01:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:01:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:01:05,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:01:05,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174369165] [2021-11-05 16:01:05,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174369165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:01:05,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:01:05,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:01:05,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141077825] [2021-11-05 16:01:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:01:05,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:01:05,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:01:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:01:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:01:05,367 INFO L87 Difference]: Start difference. First operand 10733 states and 15293 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:01:08,280 INFO L93 Difference]: Finished difference Result 44913 states and 64066 transitions. [2021-11-05 16:01:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:01:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 222 [2021-11-05 16:01:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:01:08,335 INFO L225 Difference]: With dead ends: 44913 [2021-11-05 16:01:08,335 INFO L226 Difference]: Without dead ends: 35997 [2021-11-05 16:01:08,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:01:08,353 INFO L933 BasicCegarLoop]: 10918 mSDtfsCounter, 9983 mSDsluCounter, 13625 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9995 SdHoareTripleChecker+Valid, 24543 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.51ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.77ms IncrementalHoareTripleChecker+Time [2021-11-05 16:01:08,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9995 Valid, 24543 Invalid, 127 Unknown, 0 Unchecked, 27.51ms Time], IncrementalHoareTripleChecker [26 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 167.77ms Time] [2021-11-05 16:01:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35997 states. [2021-11-05 16:01:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35997 to 10749. [2021-11-05 16:01:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10749 states, 10718 states have (on average 1.4235864900167943) internal successors, (15258), 10720 states have internal predecessors, (15258), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:01:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10749 states to 10749 states and 15313 transitions. [2021-11-05 16:01:09,194 INFO L78 Accepts]: Start accepts. Automaton has 10749 states and 15313 transitions. Word has length 222 [2021-11-05 16:01:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:01:09,195 INFO L470 AbstractCegarLoop]: Abstraction has 10749 states and 15313 transitions. [2021-11-05 16:01:09,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 10749 states and 15313 transitions. [2021-11-05 16:01:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-05 16:01:09,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:01:09,204 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:01:09,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 16:01:09,204 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:01:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:01:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1411220379, now seen corresponding path program 1 times [2021-11-05 16:01:09,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:01:09,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304580309] [2021-11-05 16:01:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:01:09,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:01:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:01:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:01:09,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:01:09,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304580309] [2021-11-05 16:01:09,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304580309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:01:09,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:01:09,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:01:09,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90205376] [2021-11-05 16:01:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:01:09,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:01:09,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:01:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:01:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:01:09,462 INFO L87 Difference]: Start difference. First operand 10749 states and 15313 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:01:12,657 INFO L93 Difference]: Finished difference Result 44909 states and 64058 transitions. [2021-11-05 16:01:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:01:12,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 224 [2021-11-05 16:01:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:01:12,711 INFO L225 Difference]: With dead ends: 44909 [2021-11-05 16:01:12,712 INFO L226 Difference]: Without dead ends: 35977 [2021-11-05 16:01:12,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.63ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:01:12,733 INFO L933 BasicCegarLoop]: 9562 mSDtfsCounter, 11299 mSDsluCounter, 23090 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11311 SdHoareTripleChecker+Valid, 32652 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.67ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.53ms IncrementalHoareTripleChecker+Time [2021-11-05 16:01:12,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11311 Valid, 32652 Invalid, 132 Unknown, 0 Unchecked, 33.67ms Time], IncrementalHoareTripleChecker [29 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 131.53ms Time] [2021-11-05 16:01:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35977 states. [2021-11-05 16:01:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35977 to 10755. [2021-11-05 16:01:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10755 states, 10724 states have (on average 1.423349496456546) internal successors, (15264), 10726 states have internal predecessors, (15264), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:01:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10755 states to 10755 states and 15319 transitions. [2021-11-05 16:01:13,675 INFO L78 Accepts]: Start accepts. Automaton has 10755 states and 15319 transitions. Word has length 224 [2021-11-05 16:01:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:01:13,675 INFO L470 AbstractCegarLoop]: Abstraction has 10755 states and 15319 transitions. [2021-11-05 16:01:13,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 10755 states and 15319 transitions. [2021-11-05 16:01:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-05 16:01:13,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:01:13,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:01:13,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 16:01:13,685 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:01:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:01:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash 748951241, now seen corresponding path program 1 times [2021-11-05 16:01:13,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:01:13,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092082852] [2021-11-05 16:01:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:01:13,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:01:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:01:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-05 16:01:14,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:01:14,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092082852] [2021-11-05 16:01:14,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092082852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:01:14,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:01:14,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:01:14,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581120323] [2021-11-05 16:01:14,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:01:14,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:01:14,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:01:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:01:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:01:14,040 INFO L87 Difference]: Start difference. First operand 10755 states and 15319 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:01:14,941 INFO L93 Difference]: Finished difference Result 21387 states and 30491 transitions. [2021-11-05 16:01:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:01:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 226 [2021-11-05 16:01:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:01:14,956 INFO L225 Difference]: With dead ends: 21387 [2021-11-05 16:01:14,956 INFO L226 Difference]: Without dead ends: 10756 [2021-11-05 16:01:14,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:01:14,969 INFO L933 BasicCegarLoop]: 4013 mSDtfsCounter, 0 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7997 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.46ms IncrementalHoareTripleChecker+Time [2021-11-05 16:01:14,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7997 Invalid, 30 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 40.46ms Time] [2021-11-05 16:01:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10756 states. [2021-11-05 16:01:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10756 to 10756. [2021-11-05 16:01:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10756 states, 10725 states have (on average 1.4233100233100233) internal successors, (15265), 10727 states have internal predecessors, (15265), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:01:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 15320 transitions. [2021-11-05 16:01:15,793 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 15320 transitions. Word has length 226 [2021-11-05 16:01:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:01:15,793 INFO L470 AbstractCegarLoop]: Abstraction has 10756 states and 15320 transitions. [2021-11-05 16:01:15,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:01:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 15320 transitions. [2021-11-05 16:01:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-05 16:01:15,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:01:15,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:01:15,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 16:01:15,802 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:01:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:01:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 135552706, now seen corresponding path program 1 times [2021-11-05 16:01:15,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:01:15,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991330402] [2021-11-05 16:01:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:01:15,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:01:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:01:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-05 16:01:16,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:01:16,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991330402] [2021-11-05 16:01:16,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991330402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:01:16,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983585421] [2021-11-05 16:01:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:01:16,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:01:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:01:16,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:01:16,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:03:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:09,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 3893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 16:03:09,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:03:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-05 16:03:09,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:03:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-05 16:03:09,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983585421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:03:09,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:03:09,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:03:09,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880685329] [2021-11-05 16:03:09,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:03:09,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:03:09,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:03:09,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:03:09,927 INFO L87 Difference]: Start difference. First operand 10756 states and 15320 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:03:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:10,877 INFO L93 Difference]: Finished difference Result 21402 states and 30520 transitions. [2021-11-05 16:03:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:03:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 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 227 [2021-11-05 16:03:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:10,892 INFO L225 Difference]: With dead ends: 21402 [2021-11-05 16:03:10,892 INFO L226 Difference]: Without dead ends: 10771 [2021-11-05 16:03:10,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 37.00ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:03:10,904 INFO L933 BasicCegarLoop]: 4010 mSDtfsCounter, 0 mSDsluCounter, 7968 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11978 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.81ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:10,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11978 Invalid, 81 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [18 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 73.81ms Time] [2021-11-05 16:03:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-11-05 16:03:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 10771. [2021-11-05 16:03:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10771 states, 10740 states have (on average 1.4227188081936686) internal successors, (15280), 10742 states have internal predecessors, (15280), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-05 16:03:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10771 states to 10771 states and 15335 transitions. [2021-11-05 16:03:11,702 INFO L78 Accepts]: Start accepts. Automaton has 10771 states and 15335 transitions. Word has length 227 [2021-11-05 16:03:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:11,702 INFO L470 AbstractCegarLoop]: Abstraction has 10771 states and 15335 transitions. [2021-11-05 16:03:11,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:03:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 10771 states and 15335 transitions. [2021-11-05 16:03:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-05 16:03:11,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:11,710 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:03:11,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 16:03:11,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:03:11,924 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:03:11,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:11,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1435316983, now seen corresponding path program 2 times [2021-11-05 16:03:11,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:11,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946221456] [2021-11-05 16:03:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:11,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 16:03:12,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:12,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946221456] [2021-11-05 16:03:12,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946221456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:12,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:03:12,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 16:03:12,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253946180] [2021-11-05 16:03:12,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:12,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 16:03:12,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 16:03:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:03:12,628 INFO L87 Difference]: Start difference. First operand 10771 states and 15335 transitions. Second operand has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:03:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:20,199 INFO L93 Difference]: Finished difference Result 62312 states and 89097 transitions. [2021-11-05 16:03:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-05 16:03:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 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 230 [2021-11-05 16:03:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:20,298 INFO L225 Difference]: With dead ends: 62312 [2021-11-05 16:03:20,299 INFO L226 Difference]: Without dead ends: 53354 [2021-11-05 16:03:20,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 676.95ms TimeCoverageRelationStatistics Valid=420, Invalid=1140, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 16:03:20,327 INFO L933 BasicCegarLoop]: 15811 mSDtfsCounter, 79006 mSDsluCounter, 40871 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 984.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79006 SdHoareTripleChecker+Valid, 56682 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 116.90ms SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1175.88ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:20,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79006 Valid, 56682 Invalid, 1249 Unknown, 0 Unchecked, 116.90ms Time], IncrementalHoareTripleChecker [637 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 1175.88ms Time] [2021-11-05 16:03:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53354 states. [2021-11-05 16:03:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53354 to 15243. [2021-11-05 16:03:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15243 states, 15197 states have (on average 1.4218595775482004) internal successors, (21608), 15200 states have internal predecessors, (21608), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-05 16:03:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15243 states to 15243 states and 21685 transitions. [2021-11-05 16:03:21,969 INFO L78 Accepts]: Start accepts. Automaton has 15243 states and 21685 transitions. Word has length 230 [2021-11-05 16:03:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:21,969 INFO L470 AbstractCegarLoop]: Abstraction has 15243 states and 21685 transitions. [2021-11-05 16:03:21,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:03:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15243 states and 21685 transitions. [2021-11-05 16:03:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-05 16:03:21,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:21,979 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:03:21,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 16:03:21,979 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:03:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash 26683508, now seen corresponding path program 1 times [2021-11-05 16:03:21,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:21,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988134492] [2021-11-05 16:03:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:21,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 16:03:23,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:23,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988134492] [2021-11-05 16:03:23,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988134492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:23,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:03:23,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:03:23,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121547281] [2021-11-05 16:03:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:23,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:03:23,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:03:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:03:23,293 INFO L87 Difference]: Start difference. First operand 15243 states and 21685 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:03:25,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:27,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:29,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:04:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:04:06,311 INFO L93 Difference]: Finished difference Result 65613 states and 94302 transitions. [2021-11-05 16:04:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 16:04:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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 241 [2021-11-05 16:04:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:04:06,457 INFO L225 Difference]: With dead ends: 65613 [2021-11-05 16:04:06,459 INFO L226 Difference]: Without dead ends: 52163 [2021-11-05 16:04:06,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 204.47ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-05 16:04:06,485 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 14206 mSDsluCounter, 21907 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 195 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33565.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14206 SdHoareTripleChecker+Valid, 28642 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.10ms SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36624.39ms IncrementalHoareTripleChecker+Time [2021-11-05 16:04:06,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14206 Valid, 28642 Invalid, 3941 Unknown, 0 Unchecked, 65.10ms Time], IncrementalHoareTripleChecker [195 Valid, 3743 Invalid, 3 Unknown, 0 Unchecked, 36624.39ms Time] [2021-11-05 16:04:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52163 states. [2021-11-05 16:04:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52163 to 15282. [2021-11-05 16:04:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15282 states, 15236 states have (on average 1.4215017064846416) internal successors, (21658), 15239 states have internal predecessors, (21658), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-05 16:04:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 21735 transitions. [2021-11-05 16:04:08,542 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 21735 transitions. Word has length 241 [2021-11-05 16:04:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:04:08,543 INFO L470 AbstractCegarLoop]: Abstraction has 15282 states and 21735 transitions. [2021-11-05 16:04:08,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:04:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 21735 transitions. [2021-11-05 16:04:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-05 16:04:08,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:04:08,552 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:04:08,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 16:04:08,552 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:04:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:04:08,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1002675790, now seen corresponding path program 1 times [2021-11-05 16:04:08,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:04:08,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102802944] [2021-11-05 16:04:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:08,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:04:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 16:04:10,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:04:10,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102802944] [2021-11-05 16:04:10,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102802944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:04:10,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875640634] [2021-11-05 16:04:10,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:10,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:04:10,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:04:10,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:04:10,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:07:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:07:37,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 4092 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-05 16:07:37,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:07:38,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-05 16:07:38,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-05 16:07:38,521 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-05 16:07:38,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 181 [2021-11-05 16:07:38,534 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-05 16:07:38,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 138 [2021-11-05 16:07:38,546 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-05 16:07:38,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 83 [2021-11-05 16:07:38,556 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-05 16:07:38,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 40 [2021-11-05 16:07:38,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-05 16:07:38,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-05 16:07:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 16:07:38,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:07:38,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875640634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:07:38,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:07:38,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [22] total 37 [2021-11-05 16:07:38,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978961466] [2021-11-05 16:07:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:07:38,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 16:07:38,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:07:38,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 16:07:38,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 16:07:38,679 INFO L87 Difference]: Start difference. First operand 15282 states and 21735 transitions. Second operand has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:07:40,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:08:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:08:29,411 INFO L93 Difference]: Finished difference Result 117846 states and 168959 transitions. [2021-11-05 16:08:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2021-11-05 16:08:29,412 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 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 241 [2021-11-05 16:08:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:08:29,614 INFO L225 Difference]: With dead ends: 117846 [2021-11-05 16:08:29,614 INFO L226 Difference]: Without dead ends: 104385 [2021-11-05 16:08:29,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15238 ImplicationChecksByTransitivity, 6209.28ms TimeCoverageRelationStatistics Valid=6106, Invalid=37784, Unknown=0, NotChecked=0, Total=43890 [2021-11-05 16:08:29,662 INFO L933 BasicCegarLoop]: 28910 mSDtfsCounter, 68844 mSDsluCounter, 128320 mSDsCounter, 0 mSdLazyCounter, 5068 mSolverCounterSat, 1345 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25079.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68844 SdHoareTripleChecker+Valid, 157230 SdHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 238.52ms SdHoareTripleChecker+Time, 1345 IncrementalHoareTripleChecker+Valid, 5068 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27748.89ms IncrementalHoareTripleChecker+Time [2021-11-05 16:08:29,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68844 Valid, 157230 Invalid, 6414 Unknown, 0 Unchecked, 238.52ms Time], IncrementalHoareTripleChecker [1345 Valid, 5068 Invalid, 1 Unknown, 0 Unchecked, 27748.89ms Time] [2021-11-05 16:08:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104385 states. [2021-11-05 16:08:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104385 to 26468. [2021-11-05 16:08:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26468 states, 26422 states have (on average 1.4254030731965786) internal successors, (37662), 26425 states have internal predecessors, (37662), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-05 16:08:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26468 states to 26468 states and 37739 transitions. [2021-11-05 16:08:34,324 INFO L78 Accepts]: Start accepts. Automaton has 26468 states and 37739 transitions. Word has length 241 [2021-11-05 16:08:34,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:08:34,325 INFO L470 AbstractCegarLoop]: Abstraction has 26468 states and 37739 transitions. [2021-11-05 16:08:34,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:08:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 26468 states and 37739 transitions. [2021-11-05 16:08:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-05 16:08:34,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:08:34,338 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:08:34,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 16:08:34,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:08:34,551 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:08:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:08:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2134234407, now seen corresponding path program 1 times [2021-11-05 16:08:34,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:08:34,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272795245] [2021-11-05 16:08:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:08:34,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:08:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:08:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 16:08:34,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:08:34,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272795245] [2021-11-05 16:08:34,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272795245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:08:34,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:08:34,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:08:34,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416385356] [2021-11-05 16:08:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:08:34,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:08:34,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:08:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:08:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:08:34,754 INFO L87 Difference]: Start difference. First operand 26468 states and 37739 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:08:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:08:46,431 INFO L93 Difference]: Finished difference Result 96098 states and 137460 transitions. [2021-11-05 16:08:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:08:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 251 [2021-11-05 16:08:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:08:46,544 INFO L225 Difference]: With dead ends: 96098 [2021-11-05 16:08:46,544 INFO L226 Difference]: Without dead ends: 71451 [2021-11-05 16:08:46,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:08:46,579 INFO L933 BasicCegarLoop]: 12920 mSDtfsCounter, 7092 mSDsluCounter, 12802 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7102 SdHoareTripleChecker+Valid, 25722 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.35ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.20ms IncrementalHoareTripleChecker+Time [2021-11-05 16:08:46,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7102 Valid, 25722 Invalid, 61 Unknown, 0 Unchecked, 28.35ms Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 86.20ms Time] [2021-11-05 16:08:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71451 states. [2021-11-05 16:08:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71451 to 26461. [2021-11-05 16:08:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26461 states, 26415 states have (on average 1.425364376301344) internal successors, (37651), 26418 states have internal predecessors, (37651), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-05 16:08:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26461 states to 26461 states and 37728 transitions. [2021-11-05 16:08:50,844 INFO L78 Accepts]: Start accepts. Automaton has 26461 states and 37728 transitions. Word has length 251 [2021-11-05 16:08:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:08:50,844 INFO L470 AbstractCegarLoop]: Abstraction has 26461 states and 37728 transitions. [2021-11-05 16:08:50,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:08:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26461 states and 37728 transitions. [2021-11-05 16:08:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-05 16:08:50,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:08:50,856 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:08:50,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 16:08:50,856 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:08:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:08:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1308802502, now seen corresponding path program 1 times [2021-11-05 16:08:50,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:08:50,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758572532] [2021-11-05 16:08:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:08:50,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:08:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:08:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 16:08:51,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:08:51,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758572532] [2021-11-05 16:08:51,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758572532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:08:51,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:08:51,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:08:51,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152291477] [2021-11-05 16:08:51,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:08:51,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:08:51,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:08:51,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:08:51,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:08:51,358 INFO L87 Difference]: Start difference. First operand 26461 states and 37728 transitions. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 5 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:08:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:08:57,025 INFO L93 Difference]: Finished difference Result 58364 states and 83281 transitions. [2021-11-05 16:08:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:08:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 5 states have internal predecessors, (246), 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 257 [2021-11-05 16:08:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:08:57,079 INFO L225 Difference]: With dead ends: 58364 [2021-11-05 16:08:57,080 INFO L226 Difference]: Without dead ends: 33724 [2021-11-05 16:08:57,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.52ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:08:57,118 INFO L933 BasicCegarLoop]: 7528 mSDtfsCounter, 9439 mSDsluCounter, 20838 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9439 SdHoareTripleChecker+Valid, 28366 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.21ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.13ms IncrementalHoareTripleChecker+Time [2021-11-05 16:08:57,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9439 Valid, 28366 Invalid, 112 Unknown, 0 Unchecked, 30.21ms Time], IncrementalHoareTripleChecker [21 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 140.13ms Time] [2021-11-05 16:08:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33724 states. [2021-11-05 16:09:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33724 to 22687. [2021-11-05 16:09:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22687 states, 22641 states have (on average 1.4250253964047523) internal successors, (32264), 22644 states have internal predecessors, (32264), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-05 16:09:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22687 states to 22687 states and 32341 transitions. [2021-11-05 16:09:00,696 INFO L78 Accepts]: Start accepts. Automaton has 22687 states and 32341 transitions. Word has length 257 [2021-11-05 16:09:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:00,697 INFO L470 AbstractCegarLoop]: Abstraction has 22687 states and 32341 transitions. [2021-11-05 16:09:00,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 5 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:09:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 22687 states and 32341 transitions. [2021-11-05 16:09:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-05 16:09:00,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:00,707 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:09:00,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 16:09:00,707 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash -244985870, now seen corresponding path program 1 times [2021-11-05 16:09:00,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:00,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040739922] [2021-11-05 16:09:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:00,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 16:09:00,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:00,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040739922] [2021-11-05 16:09:00,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040739922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:00,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:00,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:09:00,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177029534] [2021-11-05 16:09:00,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:00,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:09:00,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:09:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:09:00,976 INFO L87 Difference]: Start difference. First operand 22687 states and 32341 transitions. Second operand has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 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)