./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:50:13,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:50:13,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:50:13,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:50:13,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:50:13,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:50:13,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:50:13,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:50:13,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:50:13,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:50:13,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:50:13,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:50:13,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:50:13,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:50:13,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:50:13,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:50:13,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:50:13,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:50:13,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:50:13,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:50:13,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:50:13,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:50:13,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:50:13,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:50:13,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:50:13,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:50:13,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:50:13,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:50:13,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:50:13,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:50:13,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:50:13,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:50:13,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:50:13,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:50:13,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:50:13,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:50:13,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:50:13,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:50:13,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:50:13,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:50:13,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:50:13,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:50:13,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:50:13,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:50:13,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:50:13,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:50:13,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:50:13,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:50:13,530 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:50:13,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:50:13,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:50:13,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:50:13,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:50:13,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:50:13,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:50:13,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:50:13,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:50:13,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:50:13,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:50:13,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:50:13,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:50:13,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:50:13,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:50:13,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:50:13,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:50:13,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:50:13,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:50:13,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:50:13,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:50:13,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:50:13,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:50:13,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2021-11-05 18:50:13,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:50:13,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:50:13,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:50:13,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:50:13,876 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:50:13,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-05 18:50:13,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86d400ab/0b382d3edc3b47f898b98b310be00871/FLAG2f066feb7 [2021-11-05 18:50:14,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:50:14,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-05 18:50:14,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86d400ab/0b382d3edc3b47f898b98b310be00871/FLAG2f066feb7 [2021-11-05 18:50:14,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86d400ab/0b382d3edc3b47f898b98b310be00871 [2021-11-05 18:50:14,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:50:14,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:50:14,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:50:14,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:50:14,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:50:14,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58561aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14, skipping insertion in model container [2021-11-05 18:50:14,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:50:14,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:50:16,289 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2021-11-05 18:50:16,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:50:16,466 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:50:16,768 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2021-11-05 18:50:16,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:50:16,863 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:50:16,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16 WrapperNode [2021-11-05 18:50:16,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:50:16,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:50:16,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:50:16,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:50:16,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:16,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:17,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:50:17,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:50:17,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:50:17,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:50:17,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:17,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:17,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:17,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:18,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:18,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:18,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:18,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:50:18,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:50:18,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:50:18,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:50:18,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (1/1) ... [2021-11-05 18:50:18,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:50:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:50:18,340 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 18:50:18,367 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 18:50:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-11-05 18:50:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-11-05 18:50:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:50:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:50:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:50:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:50:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:50:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:50:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-11-05 18:50:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-11-05 18:50:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:50:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-11-05 18:50:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-11-05 18:50:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:50:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:50:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-11-05 18:50:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-11-05 18:50:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:50:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-11-05 18:50:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-11-05 18:50:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:50:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:50:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:50:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:50:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:50:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:50:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:50:34,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:50:34,464 INFO L299 CfgBuilder]: Removed 2604 assume(true) statements. [2021-11-05 18:50:34,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:50:34 BoogieIcfgContainer [2021-11-05 18:50:34,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:50:34,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:50:34,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:50:34,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:50:34,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:50:14" (1/3) ... [2021-11-05 18:50:34,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5765ccb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:50:34, skipping insertion in model container [2021-11-05 18:50:34,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:16" (2/3) ... [2021-11-05 18:50:34,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5765ccb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:50:34, skipping insertion in model container [2021-11-05 18:50:34,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:50:34" (3/3) ... [2021-11-05 18:50:34,479 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-05 18:50:34,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:50:34,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-05 18:50:34,549 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:50:34,556 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 18:50:34,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-05 18:50:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 4099 states, 4072 states have (on average 1.4211689587426326) internal successors, (5787), 4081 states have internal predecessors, (5787), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-05 18:50:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 18:50:34,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:34,655 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] [2021-11-05 18:50:34,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1748794963, now seen corresponding path program 1 times [2021-11-05 18:50:34,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:34,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107473592] [2021-11-05 18:50:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:34,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:35,248 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 18:50:35,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:35,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107473592] [2021-11-05 18:50:35,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107473592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:35,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:35,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:35,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745608080] [2021-11-05 18:50:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:35,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:50:35,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:50:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:50:35,308 INFO L87 Difference]: Start difference. First operand has 4099 states, 4072 states have (on average 1.4211689587426326) internal successors, (5787), 4081 states have internal predecessors, (5787), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 18:50:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:35,503 INFO L93 Difference]: Finished difference Result 8194 states and 11639 transitions. [2021-11-05 18:50:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:50:35,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-11-05 18:50:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:35,547 INFO L225 Difference]: With dead ends: 8194 [2021-11-05 18:50:35,547 INFO L226 Difference]: Without dead ends: 4089 [2021-11-05 18:50:35,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:50:35,572 INFO L933 BasicCegarLoop]: 5721 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5721 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:35,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5721 Invalid, 0 Unknown, 0 Unchecked, 22.11ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:50:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2021-11-05 18:50:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4089. [2021-11-05 18:50:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 4063 states have (on average 1.3972434161949299) internal successors, (5677), 4071 states have internal predecessors, (5677), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-05 18:50:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5705 transitions. [2021-11-05 18:50:35,985 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5705 transitions. Word has length 29 [2021-11-05 18:50:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:35,985 INFO L470 AbstractCegarLoop]: Abstraction has 4089 states and 5705 transitions. [2021-11-05 18:50:35,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 18:50:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5705 transitions. [2021-11-05 18:50:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 18:50:35,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:35,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:50:35,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:50:35,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash 614067241, now seen corresponding path program 1 times [2021-11-05 18:50:35,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:35,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382561564] [2021-11-05 18:50:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:35,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:36,302 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 18:50:36,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:36,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382561564] [2021-11-05 18:50:36,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382561564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:36,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:36,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:36,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310061463] [2021-11-05 18:50:36,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:36,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:36,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:36,306 INFO L87 Difference]: Start difference. First operand 4089 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 18:50:38,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:50:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:38,722 INFO L93 Difference]: Finished difference Result 12206 states and 17052 transitions. [2021-11-05 18:50:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-05 18:50:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:38,761 INFO L225 Difference]: With dead ends: 12206 [2021-11-05 18:50:38,761 INFO L226 Difference]: Without dead ends: 8136 [2021-11-05 18:50:38,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:38,775 INFO L933 BasicCegarLoop]: 5718 mSDtfsCounter, 5662 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2107.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 11403 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.45ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2192.20ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:38,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 11403 Invalid, 16 Unknown, 0 Unchecked, 21.45ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2192.20ms Time] [2021-11-05 18:50:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2021-11-05 18:50:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 8132. [2021-11-05 18:50:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8132 states, 8086 states have (on average 1.3982191441998515) internal successors, (11306), 8097 states have internal predecessors, (11306), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 18:50:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 11362 transitions. [2021-11-05 18:50:39,018 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 11362 transitions. Word has length 29 [2021-11-05 18:50:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:39,018 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 11362 transitions. [2021-11-05 18:50:39,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 18:50:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 11362 transitions. [2021-11-05 18:50:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 18:50:39,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:39,022 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] [2021-11-05 18:50:39,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:50:39,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash -847670758, now seen corresponding path program 1 times [2021-11-05 18:50:39,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:39,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753182486] [2021-11-05 18:50:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:39,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:39,209 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 18:50:39,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:39,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753182486] [2021-11-05 18:50:39,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753182486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:39,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:39,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:39,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243090489] [2021-11-05 18:50:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:39,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:39,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:39,213 INFO L87 Difference]: Start difference. First operand 8132 states and 11362 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 18:50:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:39,597 INFO L93 Difference]: Finished difference Result 23500 states and 32877 transitions. [2021-11-05 18:50:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:39,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-11-05 18:50:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:39,685 INFO L225 Difference]: With dead ends: 23500 [2021-11-05 18:50:39,686 INFO L226 Difference]: Without dead ends: 15387 [2021-11-05 18:50:39,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:39,715 INFO L933 BasicCegarLoop]: 7274 mSDtfsCounter, 5129 mSDsluCounter, 5644 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5129 SdHoareTripleChecker+Valid, 12918 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.02ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.12ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:39,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5129 Valid, 12918 Invalid, 25 Unknown, 0 Unchecked, 19.02ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 94.12ms Time] [2021-11-05 18:50:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15387 states. [2021-11-05 18:50:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15387 to 12997. [2021-11-05 18:50:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12997 states, 12951 states have (on average 1.3979615473708593) internal successors, (18105), 12962 states have internal predecessors, (18105), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 18:50:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 18161 transitions. [2021-11-05 18:50:40,139 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 18161 transitions. Word has length 34 [2021-11-05 18:50:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:40,140 INFO L470 AbstractCegarLoop]: Abstraction has 12997 states and 18161 transitions. [2021-11-05 18:50:40,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 18:50:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 18161 transitions. [2021-11-05 18:50:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 18:50:40,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:40,147 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] [2021-11-05 18:50:40,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:50:40,148 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:40,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:40,149 INFO L85 PathProgramCache]: Analyzing trace with hash -406509849, now seen corresponding path program 1 times [2021-11-05 18:50:40,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:40,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736428772] [2021-11-05 18:50:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:40,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:40,365 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 18:50:40,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:40,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736428772] [2021-11-05 18:50:40,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736428772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:40,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:40,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:40,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113311001] [2021-11-05 18:50:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:40,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:40,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:40,472 INFO L87 Difference]: Start difference. First operand 12997 states and 18161 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:50:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:40,714 INFO L93 Difference]: Finished difference Result 13021 states and 18183 transitions. [2021-11-05 18:50:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-05 18:50:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:40,758 INFO L225 Difference]: With dead ends: 13021 [2021-11-05 18:50:40,758 INFO L226 Difference]: Without dead ends: 13009 [2021-11-05 18:50:40,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:40,767 INFO L933 BasicCegarLoop]: 5715 mSDtfsCounter, 5700 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5700 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.54ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:40,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5700 Valid, 5726 Invalid, 6 Unknown, 0 Unchecked, 10.50ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 63.54ms Time] [2021-11-05 18:50:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13009 states. [2021-11-05 18:50:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13009 to 12997. [2021-11-05 18:50:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12997 states, 12951 states have (on average 1.397807119141379) internal successors, (18103), 12962 states have internal predecessors, (18103), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 18:50:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 18159 transitions. [2021-11-05 18:50:41,124 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 18159 transitions. Word has length 38 [2021-11-05 18:50:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 12997 states and 18159 transitions. [2021-11-05 18:50:41,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:50:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 18159 transitions. [2021-11-05 18:50:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 18:50:41,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:41,126 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] [2021-11-05 18:50:41,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:50:41,127 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash -406450267, now seen corresponding path program 1 times [2021-11-05 18:50:41,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:41,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088846841] [2021-11-05 18:50:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:41,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:41,359 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 18:50:41,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:41,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088846841] [2021-11-05 18:50:41,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088846841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:41,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:41,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:41,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264527335] [2021-11-05 18:50:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:41,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:41,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:41,362 INFO L87 Difference]: Start difference. First operand 12997 states and 18159 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 18:50:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:41,574 INFO L93 Difference]: Finished difference Result 12997 states and 18159 transitions. [2021-11-05 18:50:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 38 [2021-11-05 18:50:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:41,619 INFO L225 Difference]: With dead ends: 12997 [2021-11-05 18:50:41,620 INFO L226 Difference]: Without dead ends: 12995 [2021-11-05 18:50:41,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:41,628 INFO L933 BasicCegarLoop]: 5702 mSDtfsCounter, 5667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.64ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:41,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 5702 Invalid, 1 Unknown, 0 Unchecked, 11.96ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.64ms Time] [2021-11-05 18:50:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12995 states. [2021-11-05 18:50:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12995 to 12995. [2021-11-05 18:50:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12995 states, 12950 states have (on average 1.3977606177606177) internal successors, (18101), 12960 states have internal predecessors, (18101), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 18:50:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12995 states to 12995 states and 18157 transitions. [2021-11-05 18:50:41,992 INFO L78 Accepts]: Start accepts. Automaton has 12995 states and 18157 transitions. Word has length 38 [2021-11-05 18:50:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:41,993 INFO L470 AbstractCegarLoop]: Abstraction has 12995 states and 18157 transitions. [2021-11-05 18:50:41,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 18:50:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 12995 states and 18157 transitions. [2021-11-05 18:50:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 18:50:41,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:41,995 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] [2021-11-05 18:50:41,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:50:41,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash 284963038, now seen corresponding path program 1 times [2021-11-05 18:50:41,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:41,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768118463] [2021-11-05 18:50:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:41,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:42,271 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 18:50:42,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:42,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768118463] [2021-11-05 18:50:42,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768118463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:42,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:42,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:42,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252174299] [2021-11-05 18:50:42,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:42,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:42,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:42,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:42,274 INFO L87 Difference]: Start difference. First operand 12995 states and 18157 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 18:50:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:42,516 INFO L93 Difference]: Finished difference Result 12995 states and 18157 transitions. [2021-11-05 18:50:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2021-11-05 18:50:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:42,558 INFO L225 Difference]: With dead ends: 12995 [2021-11-05 18:50:42,558 INFO L226 Difference]: Without dead ends: 12993 [2021-11-05 18:50:42,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:42,569 INFO L933 BasicCegarLoop]: 5700 mSDtfsCounter, 5664 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 5700 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.64ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:42,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5664 Valid, 5700 Invalid, 1 Unknown, 0 Unchecked, 12.83ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.64ms Time] [2021-11-05 18:50:42,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2021-11-05 18:50:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 12993. [2021-11-05 18:50:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12993 states, 12949 states have (on average 1.3977141091976215) internal successors, (18099), 12958 states have internal predecessors, (18099), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 18:50:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12993 states to 12993 states and 18155 transitions. [2021-11-05 18:50:42,985 INFO L78 Accepts]: Start accepts. Automaton has 12993 states and 18155 transitions. Word has length 39 [2021-11-05 18:50:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:42,985 INFO L470 AbstractCegarLoop]: Abstraction has 12993 states and 18155 transitions. [2021-11-05 18:50:42,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 18:50:42,986 INFO L276 IsEmpty]: Start isEmpty. Operand 12993 states and 18155 transitions. [2021-11-05 18:50:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 18:50:42,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:42,987 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] [2021-11-05 18:50:42,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:50:42,988 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash 243939023, now seen corresponding path program 1 times [2021-11-05 18:50:42,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:42,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283930448] [2021-11-05 18:50:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:42,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:43,195 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 18:50:43,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:43,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283930448] [2021-11-05 18:50:43,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283930448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:43,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:43,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:43,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485095379] [2021-11-05 18:50:43,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:43,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:43,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:43,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:43,199 INFO L87 Difference]: Start difference. First operand 12993 states and 18155 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 18:50:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:43,445 INFO L93 Difference]: Finished difference Result 12993 states and 18155 transitions. [2021-11-05 18:50:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 40 [2021-11-05 18:50:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:43,478 INFO L225 Difference]: With dead ends: 12993 [2021-11-05 18:50:43,478 INFO L226 Difference]: Without dead ends: 12991 [2021-11-05 18:50:43,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:43,486 INFO L933 BasicCegarLoop]: 5698 mSDtfsCounter, 5661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.68ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:43,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 5698 Invalid, 1 Unknown, 0 Unchecked, 12.16ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.68ms Time] [2021-11-05 18:50:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12991 states. [2021-11-05 18:50:43,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12991 to 12991. [2021-11-05 18:50:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12991 states, 12948 states have (on average 1.3976675934507259) internal successors, (18097), 12956 states have internal predecessors, (18097), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 18:50:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 18153 transitions. [2021-11-05 18:50:43,950 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 18153 transitions. Word has length 40 [2021-11-05 18:50:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:43,951 INFO L470 AbstractCegarLoop]: Abstraction has 12991 states and 18153 transitions. [2021-11-05 18:50:43,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 18:50:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 18153 transitions. [2021-11-05 18:50:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 18:50:43,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:43,953 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] [2021-11-05 18:50:43,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 18:50:43,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1027805432, now seen corresponding path program 1 times [2021-11-05 18:50:43,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:43,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582356319] [2021-11-05 18:50:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:43,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:44,111 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 18:50:44,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:44,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582356319] [2021-11-05 18:50:44,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582356319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:44,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:44,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:44,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665731089] [2021-11-05 18:50:44,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:44,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:44,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:44,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:44,116 INFO L87 Difference]: Start difference. First operand 12991 states and 18153 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 18:50:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:44,599 INFO L93 Difference]: Finished difference Result 38923 states and 54407 transitions. [2021-11-05 18:50:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-05 18:50:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:44,668 INFO L225 Difference]: With dead ends: 38923 [2021-11-05 18:50:44,668 INFO L226 Difference]: Without dead ends: 25945 [2021-11-05 18:50:44,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:44,709 INFO L933 BasicCegarLoop]: 5731 mSDtfsCounter, 5652 mSDsluCounter, 5670 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5652 SdHoareTripleChecker+Valid, 11401 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.24ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.35ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:44,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5652 Valid, 11401 Invalid, 11 Unknown, 0 Unchecked, 24.24ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 11.35ms Time] [2021-11-05 18:50:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25945 states. [2021-11-05 18:50:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25945 to 25936. [2021-11-05 18:50:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25936 states, 25853 states have (on average 1.3979035315050479) internal successors, (36140), 25868 states have internal predecessors, (36140), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 47 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-05 18:50:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25936 states to 25936 states and 36252 transitions. [2021-11-05 18:50:45,365 INFO L78 Accepts]: Start accepts. Automaton has 25936 states and 36252 transitions. Word has length 41 [2021-11-05 18:50:45,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:45,366 INFO L470 AbstractCegarLoop]: Abstraction has 25936 states and 36252 transitions. [2021-11-05 18:50:45,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 18:50:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 25936 states and 36252 transitions. [2021-11-05 18:50:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 18:50:45,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:45,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-05 18:50:45,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 18:50:45,384 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 833821888, now seen corresponding path program 1 times [2021-11-05 18:50:45,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:45,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872623411] [2021-11-05 18:50:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:45,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 18:50:45,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:45,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872623411] [2021-11-05 18:50:45,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872623411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:45,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:45,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:45,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466706529] [2021-11-05 18:50:45,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:45,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:45,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:45,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:45,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:45,533 INFO L87 Difference]: Start difference. First operand 25936 states and 36252 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 18:50:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:46,463 INFO L93 Difference]: Finished difference Result 66833 states and 93493 transitions. [2021-11-05 18:50:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:46,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 94 [2021-11-05 18:50:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:46,585 INFO L225 Difference]: With dead ends: 66833 [2021-11-05 18:50:46,586 INFO L226 Difference]: Without dead ends: 40916 [2021-11-05 18:50:46,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:46,652 INFO L933 BasicCegarLoop]: 7941 mSDtfsCounter, 3768 mSDsluCounter, 5647 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3768 SdHoareTripleChecker+Valid, 13588 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.31ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:46,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3768 Valid, 13588 Invalid, 33 Unknown, 0 Unchecked, 19.29ms Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 86.31ms Time] [2021-11-05 18:50:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40916 states. [2021-11-05 18:50:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40916 to 40890. [2021-11-05 18:50:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40890 states, 40735 states have (on average 1.3998281576040261) internal successors, (57022), 40764 states have internal predecessors, (57022), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:50:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40890 states to 40890 states and 57230 transitions. [2021-11-05 18:50:47,583 INFO L78 Accepts]: Start accepts. Automaton has 40890 states and 57230 transitions. Word has length 94 [2021-11-05 18:50:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:47,584 INFO L470 AbstractCegarLoop]: Abstraction has 40890 states and 57230 transitions. [2021-11-05 18:50:47,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 18:50:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40890 states and 57230 transitions. [2021-11-05 18:50:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-05 18:50:47,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:47,609 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:50:47,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 18:50:47,610 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:47,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash -865762240, now seen corresponding path program 1 times [2021-11-05 18:50:47,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:47,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151389557] [2021-11-05 18:50:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:47,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 18:50:47,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:47,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151389557] [2021-11-05 18:50:47,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151389557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:47,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:47,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:50:47,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119059837] [2021-11-05 18:50:47,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:47,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:50:47,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:50:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:50:47,906 INFO L87 Difference]: Start difference. First operand 40890 states and 57230 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 18:50:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:49,991 INFO L93 Difference]: Finished difference Result 141847 states and 198508 transitions. [2021-11-05 18:50:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:50:49,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-05 18:50:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:50,288 INFO L225 Difference]: With dead ends: 141847 [2021-11-05 18:50:50,289 INFO L226 Difference]: Without dead ends: 100976 [2021-11-05 18:50:50,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:50:50,361 INFO L933 BasicCegarLoop]: 9474 mSDtfsCounter, 11277 mSDsluCounter, 15159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11282 SdHoareTripleChecker+Valid, 24633 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.89ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.68ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:50,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11282 Valid, 24633 Invalid, 25 Unknown, 0 Unchecked, 41.89ms Time], IncrementalHoareTripleChecker [15 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 46.68ms Time] [2021-11-05 18:50:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100976 states. [2021-11-05 18:50:52,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100976 to 40906. [2021-11-05 18:50:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40906 states, 40751 states have (on average 1.3996711737135286) internal successors, (57038), 40780 states have internal predecessors, (57038), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:50:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40906 states to 40906 states and 57246 transitions. [2021-11-05 18:50:52,290 INFO L78 Accepts]: Start accepts. Automaton has 40906 states and 57246 transitions. Word has length 109 [2021-11-05 18:50:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:52,291 INFO L470 AbstractCegarLoop]: Abstraction has 40906 states and 57246 transitions. [2021-11-05 18:50:52,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 18:50:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 40906 states and 57246 transitions. [2021-11-05 18:50:52,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 18:50:52,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:52,319 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:50:52,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 18:50:52,319 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2088522138, now seen corresponding path program 1 times [2021-11-05 18:50:52,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:52,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298254398] [2021-11-05 18:50:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:52,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 18:50:52,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:52,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298254398] [2021-11-05 18:50:52,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298254398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:52,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:52,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:50:52,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776212150] [2021-11-05 18:50:52,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:52,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:50:52,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:50:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:50:52,728 INFO L87 Difference]: Start difference. First operand 40906 states and 57246 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 18:50:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:55,185 INFO L93 Difference]: Finished difference Result 142823 states and 199748 transitions. [2021-11-05 18:50:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 18:50:55,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-05 18:50:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:55,559 INFO L225 Difference]: With dead ends: 142823 [2021-11-05 18:50:55,560 INFO L226 Difference]: Without dead ends: 101936 [2021-11-05 18:50:55,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:50:55,624 INFO L933 BasicCegarLoop]: 9473 mSDtfsCounter, 10863 mSDsluCounter, 14581 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10868 SdHoareTripleChecker+Valid, 24054 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.34ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.44ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:55,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10868 Valid, 24054 Invalid, 27 Unknown, 0 Unchecked, 40.34ms Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 47.44ms Time] [2021-11-05 18:50:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101936 states. [2021-11-05 18:50:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101936 to 40922. [2021-11-05 18:50:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40922 states, 40767 states have (on average 1.3995143130473178) internal successors, (57054), 40796 states have internal predecessors, (57054), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:50:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40922 states to 40922 states and 57262 transitions. [2021-11-05 18:50:57,042 INFO L78 Accepts]: Start accepts. Automaton has 40922 states and 57262 transitions. Word has length 128 [2021-11-05 18:50:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:57,043 INFO L470 AbstractCegarLoop]: Abstraction has 40922 states and 57262 transitions. [2021-11-05 18:50:57,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 18:50:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 40922 states and 57262 transitions. [2021-11-05 18:50:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 18:50:57,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:57,074 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:50:57,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 18:50:57,075 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:50:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1561441205, now seen corresponding path program 1 times [2021-11-05 18:50:57,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:57,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469639191] [2021-11-05 18:50:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:57,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 18:50:57,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:57,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469639191] [2021-11-05 18:50:57,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469639191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:57,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:57,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:50:57,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456481747] [2021-11-05 18:50:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:57,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:50:57,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:57,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:50:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:50:57,389 INFO L87 Difference]: Start difference. First operand 40922 states and 57262 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 18:50:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:58,533 INFO L93 Difference]: Finished difference Result 81889 states and 114584 transitions. [2021-11-05 18:50:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:50:58,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 135 [2021-11-05 18:50:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:58,730 INFO L225 Difference]: With dead ends: 81889 [2021-11-05 18:50:58,731 INFO L226 Difference]: Without dead ends: 40986 [2021-11-05 18:50:58,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:50:58,779 INFO L933 BasicCegarLoop]: 5695 mSDtfsCounter, 5 mSDsluCounter, 11378 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17073 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.03ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.28ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:58,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 17073 Invalid, 30 Unknown, 0 Unchecked, 18.03ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 28.28ms Time] [2021-11-05 18:50:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40986 states. [2021-11-05 18:50:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40986 to 40954. [2021-11-05 18:50:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40954 states, 40799 states have (on average 1.399200960807863) internal successors, (57086), 40828 states have internal predecessors, (57086), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:51:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40954 states to 40954 states and 57294 transitions. [2021-11-05 18:51:00,015 INFO L78 Accepts]: Start accepts. Automaton has 40954 states and 57294 transitions. Word has length 135 [2021-11-05 18:51:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:00,015 INFO L470 AbstractCegarLoop]: Abstraction has 40954 states and 57294 transitions. [2021-11-05 18:51:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 18:51:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 40954 states and 57294 transitions. [2021-11-05 18:51:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 18:51:00,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:00,041 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:51:00,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 18:51:00,041 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1408669897, now seen corresponding path program 1 times [2021-11-05 18:51:00,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:00,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065751350] [2021-11-05 18:51:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:00,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 18:51:00,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:00,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065751350] [2021-11-05 18:51:00,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065751350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:00,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:00,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:51:00,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364990601] [2021-11-05 18:51:00,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:00,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:51:00,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:51:00,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:51:00,221 INFO L87 Difference]: Start difference. First operand 40954 states and 57294 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 18:51:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:03,444 INFO L93 Difference]: Finished difference Result 172414 states and 241094 transitions. [2021-11-05 18:51:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:51:03,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 135 [2021-11-05 18:51:03,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:03,686 INFO L225 Difference]: With dead ends: 172414 [2021-11-05 18:51:03,686 INFO L226 Difference]: Without dead ends: 131479 [2021-11-05 18:51:03,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:51:03,751 INFO L933 BasicCegarLoop]: 13218 mSDtfsCounter, 11338 mSDsluCounter, 18901 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 32119 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.68ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.14ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:03,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 32119 Invalid, 39 Unknown, 0 Unchecked, 39.68ms Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 112.14ms Time] [2021-11-05 18:51:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131479 states. [2021-11-05 18:51:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131479 to 40970. [2021-11-05 18:51:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40970 states, 40815 states have (on average 1.3990444689452408) internal successors, (57102), 40844 states have internal predecessors, (57102), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:51:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40970 states to 40970 states and 57310 transitions. [2021-11-05 18:51:05,595 INFO L78 Accepts]: Start accepts. Automaton has 40970 states and 57310 transitions. Word has length 135 [2021-11-05 18:51:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:05,596 INFO L470 AbstractCegarLoop]: Abstraction has 40970 states and 57310 transitions. [2021-11-05 18:51:05,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 18:51:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 40970 states and 57310 transitions. [2021-11-05 18:51:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 18:51:05,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:05,614 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:51:05,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 18:51:05,614 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:05,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1918946745, now seen corresponding path program 1 times [2021-11-05 18:51:05,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:05,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150123124] [2021-11-05 18:51:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:05,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 18:51:05,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:05,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150123124] [2021-11-05 18:51:05,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150123124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:05,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:05,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:51:05,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739974524] [2021-11-05 18:51:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:05,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:05,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:05,779 INFO L87 Difference]: Start difference. First operand 40970 states and 57310 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 18:51:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:06,946 INFO L93 Difference]: Finished difference Result 81945 states and 114648 transitions. [2021-11-05 18:51:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:06,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 135 [2021-11-05 18:51:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:07,010 INFO L225 Difference]: With dead ends: 81945 [2021-11-05 18:51:07,011 INFO L226 Difference]: Without dead ends: 40994 [2021-11-05 18:51:07,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:07,052 INFO L933 BasicCegarLoop]: 5696 mSDtfsCounter, 0 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11377 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.08ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:07,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11377 Invalid, 22 Unknown, 0 Unchecked, 8.61ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 67.08ms Time] [2021-11-05 18:51:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40994 states. [2021-11-05 18:51:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40994 to 40994. [2021-11-05 18:51:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40994 states, 40839 states have (on average 1.3988099610666276) internal successors, (57126), 40868 states have internal predecessors, (57126), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:51:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40994 states to 40994 states and 57334 transitions. [2021-11-05 18:51:08,267 INFO L78 Accepts]: Start accepts. Automaton has 40994 states and 57334 transitions. Word has length 135 [2021-11-05 18:51:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 40994 states and 57334 transitions. [2021-11-05 18:51:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 18:51:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 40994 states and 57334 transitions. [2021-11-05 18:51:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 18:51:08,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:08,287 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:51:08,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 18:51:08,287 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:08,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:08,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1995847543, now seen corresponding path program 1 times [2021-11-05 18:51:08,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:08,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960566559] [2021-11-05 18:51:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:08,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 18:51:08,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:08,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960566559] [2021-11-05 18:51:08,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960566559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:08,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:08,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:51:08,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522388251] [2021-11-05 18:51:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:08,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:08,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:08,636 INFO L87 Difference]: Start difference. First operand 40994 states and 57334 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 18:51:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:10,725 INFO L93 Difference]: Finished difference Result 112040 states and 156714 transitions. [2021-11-05 18:51:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:10,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 135 [2021-11-05 18:51:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:10,838 INFO L225 Difference]: With dead ends: 112040 [2021-11-05 18:51:10,839 INFO L226 Difference]: Without dead ends: 71065 [2021-11-05 18:51:10,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:10,887 INFO L933 BasicCegarLoop]: 8881 mSDtfsCounter, 3878 mSDsluCounter, 5574 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 14455 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.69ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:10,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3883 Valid, 14455 Invalid, 10 Unknown, 0 Unchecked, 13.54ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 199.69ms Time] [2021-11-05 18:51:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71065 states. [2021-11-05 18:51:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71065 to 41018. [2021-11-05 18:51:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41018 states, 40863 states have (on average 1.398575728654284) internal successors, (57150), 40892 states have internal predecessors, (57150), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (104), 85 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:51:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41018 states to 41018 states and 57358 transitions. [2021-11-05 18:51:12,559 INFO L78 Accepts]: Start accepts. Automaton has 41018 states and 57358 transitions. Word has length 135 [2021-11-05 18:51:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:12,560 INFO L470 AbstractCegarLoop]: Abstraction has 41018 states and 57358 transitions. [2021-11-05 18:51:12,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 18:51:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 41018 states and 57358 transitions. [2021-11-05 18:51:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 18:51:12,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:12,573 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-05 18:51:12,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 18:51:12,573 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1309822470, now seen corresponding path program 1 times [2021-11-05 18:51:12,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:12,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697584538] [2021-11-05 18:51:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:12,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 18:51:12,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:12,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697584538] [2021-11-05 18:51:12,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697584538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:12,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:12,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:51:12,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771730835] [2021-11-05 18:51:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:12,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:51:12,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:51:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:51:12,743 INFO L87 Difference]: Start difference. First operand 41018 states and 57358 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 18:51:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:14,583 INFO L93 Difference]: Finished difference Result 97653 states and 136553 transitions. [2021-11-05 18:51:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 18:51:14,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 135 [2021-11-05 18:51:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:14,686 INFO L225 Difference]: With dead ends: 97653 [2021-11-05 18:51:14,686 INFO L226 Difference]: Without dead ends: 56654 [2021-11-05 18:51:14,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.20ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:51:14,732 INFO L933 BasicCegarLoop]: 13630 mSDtfsCounter, 11948 mSDsluCounter, 21026 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11949 SdHoareTripleChecker+Valid, 34656 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.64ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.46ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:14,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11949 Valid, 34656 Invalid, 46 Unknown, 0 Unchecked, 27.64ms Time], IncrementalHoareTripleChecker [25 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 65.46ms Time] [2021-11-05 18:51:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56654 states. [2021-11-05 18:51:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56654 to 25308. [2021-11-05 18:51:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25308 states, 25167 states have (on average 1.3992132554535701) internal successors, (35214), 25194 states have internal predecessors, (35214), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (92), 73 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-05 18:51:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25308 states to 25308 states and 35398 transitions. [2021-11-05 18:51:15,817 INFO L78 Accepts]: Start accepts. Automaton has 25308 states and 35398 transitions. Word has length 135 [2021-11-05 18:51:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:15,818 INFO L470 AbstractCegarLoop]: Abstraction has 25308 states and 35398 transitions. [2021-11-05 18:51:15,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 18:51:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 25308 states and 35398 transitions. [2021-11-05 18:51:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 18:51:15,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:15,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 18:51:15,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 18:51:15,836 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -121971086, now seen corresponding path program 1 times [2021-11-05 18:51:15,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:15,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115430888] [2021-11-05 18:51:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:15,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-05 18:51:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:51:16,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:16,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115430888] [2021-11-05 18:51:16,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115430888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:16,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:16,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:51:16,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642545334] [2021-11-05 18:51:16,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:16,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:51:16,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:51:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:51:16,061 INFO L87 Difference]: Start difference. First operand 25308 states and 35398 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:51:18,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:25,381 INFO L93 Difference]: Finished difference Result 53401 states and 74792 transitions. [2021-11-05 18:51:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 18:51:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2021-11-05 18:51:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:25,431 INFO L225 Difference]: With dead ends: 53401 [2021-11-05 18:51:25,432 INFO L226 Difference]: Without dead ends: 28112 [2021-11-05 18:51:25,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.56ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 18:51:25,468 INFO L933 BasicCegarLoop]: 5420 mSDtfsCounter, 755 mSDsluCounter, 14239 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7813.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 19659 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.78ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8460.39ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:25,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 19659 Invalid, 2820 Unknown, 0 Unchecked, 35.78ms Time], IncrementalHoareTripleChecker [25 Valid, 2794 Invalid, 1 Unknown, 0 Unchecked, 8460.39ms Time] [2021-11-05 18:51:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28112 states. [2021-11-05 18:51:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28112 to 25332. [2021-11-05 18:51:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25332 states, 25191 states have (on average 1.398832916517804) internal successors, (35238), 25218 states have internal predecessors, (35238), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (92), 73 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-05 18:51:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25332 states to 25332 states and 35422 transitions. [2021-11-05 18:51:26,320 INFO L78 Accepts]: Start accepts. Automaton has 25332 states and 35422 transitions. Word has length 142 [2021-11-05 18:51:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:26,320 INFO L470 AbstractCegarLoop]: Abstraction has 25332 states and 35422 transitions. [2021-11-05 18:51:26,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:51:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 25332 states and 35422 transitions. [2021-11-05 18:51:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 18:51:26,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:26,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 18:51:26,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 18:51:26,340 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1179809164, now seen corresponding path program 1 times [2021-11-05 18:51:26,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:26,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301528992] [2021-11-05 18:51:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:26,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-05 18:51:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 18:51:26,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:26,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301528992] [2021-11-05 18:51:26,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301528992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:26,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:26,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:51:26,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941126971] [2021-11-05 18:51:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:26,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:51:26,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:51:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:51:26,570 INFO L87 Difference]: Start difference. First operand 25332 states and 35422 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:51:28,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:30,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:40,101 INFO L93 Difference]: Finished difference Result 28102 states and 39391 transitions. [2021-11-05 18:51:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:51:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2021-11-05 18:51:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:40,172 INFO L225 Difference]: With dead ends: 28102 [2021-11-05 18:51:40,172 INFO L226 Difference]: Without dead ends: 28100 [2021-11-05 18:51:40,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:51:40,191 INFO L933 BasicCegarLoop]: 6831 mSDtfsCounter, 2851 mSDsluCounter, 9719 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11411.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 16550 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.03ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12434.60ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:40,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 16550 Invalid, 3307 Unknown, 0 Unchecked, 46.03ms Time], IncrementalHoareTripleChecker [61 Valid, 3245 Invalid, 1 Unknown, 0 Unchecked, 12434.60ms Time] [2021-11-05 18:51:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28100 states. [2021-11-05 18:51:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28100 to 25332. [2021-11-05 18:51:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25332 states, 25191 states have (on average 1.398674129649478) internal successors, (35234), 25218 states have internal predecessors, (35234), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (92), 73 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-05 18:51:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25332 states to 25332 states and 35418 transitions. [2021-11-05 18:51:41,144 INFO L78 Accepts]: Start accepts. Automaton has 25332 states and 35418 transitions. Word has length 142 [2021-11-05 18:51:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:41,144 INFO L470 AbstractCegarLoop]: Abstraction has 25332 states and 35418 transitions. [2021-11-05 18:51:41,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:51:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 25332 states and 35418 transitions. [2021-11-05 18:51:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 18:51:41,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:41,166 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 18:51:41,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 18:51:41,167 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 18:51:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 135226363, now seen corresponding path program 1 times [2021-11-05 18:51:41,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:41,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268828140] [2021-11-05 18:51:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:41,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-05 18:51:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 18:51:41,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:41,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268828140] [2021-11-05 18:51:41,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268828140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:41,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:41,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 18:51:41,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357559484] [2021-11-05 18:51:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:41,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 18:51:41,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 18:51:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:51:41,477 INFO L87 Difference]: Start difference. First operand 25332 states and 35418 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:51:43,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:58,587 INFO L93 Difference]: Finished difference Result 95708 states and 133890 transitions. [2021-11-05 18:51:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 18:51:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-11-05 18:51:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:58,589 INFO L225 Difference]: With dead ends: 95708 [2021-11-05 18:51:58,589 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 18:51:58,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 124.34ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-05 18:51:58,642 INFO L933 BasicCegarLoop]: 9441 mSDtfsCounter, 40442 mSDsluCounter, 60981 mSDsCounter, 0 mSdLazyCounter, 5034 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12627.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40446 SdHoareTripleChecker+Valid, 70422 SdHoareTripleChecker+Invalid, 5096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.27ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5034 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13769.95ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:58,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40446 Valid, 70422 Invalid, 5096 Unknown, 0 Unchecked, 107.27ms Time], IncrementalHoareTripleChecker [61 Valid, 5034 Invalid, 1 Unknown, 0 Unchecked, 13769.95ms Time] [2021-11-05 18:51:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 18:51:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 18:51:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:51:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 18:51:58,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2021-11-05 18:51:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:58,643 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 18:51:58,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:51:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 18:51:58,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 18:51:58,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-05 18:51:58,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-05 18:51:58,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-05 18:51:58,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-05 18:51:58,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-05 18:51:58,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-05 18:51:58,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 18:51:58,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.