./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.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 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 22:50:08,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 22:50:08,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 22:50:08,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 22:50:08,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 22:50:08,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 22:50:08,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 22:50:08,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 22:50:08,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 22:50:08,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 22:50:08,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 22:50:08,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 22:50:08,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 22:50:08,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 22:50:08,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 22:50:08,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 22:50:08,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 22:50:08,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 22:50:08,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 22:50:08,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 22:50:08,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 22:50:08,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 22:50:08,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 22:50:08,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 22:50:08,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 22:50:08,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 22:50:08,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 22:50:08,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 22:50:08,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 22:50:08,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 22:50:08,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 22:50:08,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 22:50:08,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 22:50:08,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 22:50:08,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 22:50:08,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 22:50:08,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 22:50:08,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 22:50:08,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 22:50:08,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 22:50:08,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 22:50:08,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 22:50:08,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 22:50:08,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 22:50:08,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 22:50:08,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 22:50:08,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 22:50:08,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 22:50:08,900 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 22:50:08,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 22:50:08,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 22:50:08,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 22:50:08,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 22:50:08,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 22:50:08,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 22:50:08,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 22:50:08,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 22:50:08,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 22:50:08,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 22:50:08,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 22:50:08,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 22:50:08,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:50:08,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 22:50:08,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 22:50:08,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 22:50:08,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 22:50:08,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 22:50:08,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 22:50:08,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 22:50:08,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 22:50:08,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 22:50:08,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d [2021-11-22 22:50:09,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 22:50:09,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 22:50:09,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 22:50:09,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 22:50:09,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 22:50:09,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-22 22:50:09,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c335a6336/7cac10ce29524a4a9199f922f5d7247d/FLAGf64a7cb6e [2021-11-22 22:50:09,837 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 22:50:09,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-22 22:50:09,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c335a6336/7cac10ce29524a4a9199f922f5d7247d/FLAGf64a7cb6e [2021-11-22 22:50:09,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c335a6336/7cac10ce29524a4a9199f922f5d7247d [2021-11-22 22:50:09,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 22:50:09,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 22:50:09,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 22:50:09,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 22:50:09,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 22:50:09,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:50:09" (1/1) ... [2021-11-22 22:50:09,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@befc522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:09, skipping insertion in model container [2021-11-22 22:50:09,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:50:09" (1/1) ... [2021-11-22 22:50:09,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 22:50:10,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 22:50:11,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-22 22:50:11,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:50:11,940 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 22:50:12,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-22 22:50:12,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:50:12,357 INFO L208 MainTranslator]: Completed translation [2021-11-22 22:50:12,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12 WrapperNode [2021-11-22 22:50:12,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 22:50:12,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 22:50:12,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 22:50:12,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 22:50:12,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:12,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:12,846 INFO L137 Inliner]: procedures = 318, calls = 3918, calls flagged for inlining = 797, calls inlined = 1443, statements flattened = 22086 [2021-11-22 22:50:12,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 22:50:12,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 22:50:12,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 22:50:12,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 22:50:12,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:12,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:12,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:12,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:13,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:13,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:13,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:13,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 22:50:13,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 22:50:13,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 22:50:13,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 22:50:13,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (1/1) ... [2021-11-22 22:50:13,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:50:13,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:50:13,497 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) [2021-11-22 22:50:13,561 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 [2021-11-22 22:50:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-22 22:50:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-22 22:50:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2021-11-22 22:50:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2021-11-22 22:50:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-11-22 22:50:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-11-22 22:50:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2021-11-22 22:50:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2021-11-22 22:50:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 22:50:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 22:50:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 22:50:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-22 22:50:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-22 22:50:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-22 22:50:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-22 22:50:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_18 [2021-11-22 22:50:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_18 [2021-11-22 22:50:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2021-11-22 22:50:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2021-11-22 22:50:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 22:50:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure read_int_callback [2021-11-22 22:50:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure read_int_callback [2021-11-22 22:50:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 22:50:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure read_ctrl_callback [2021-11-22 22:50:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ctrl_callback [2021-11-22 22:50:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-22 22:50:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-22 22:50:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-22 22:50:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-22 22:50:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2021-11-22 22:50:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2021-11-22 22:50:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 22:50:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2021-11-22 22:50:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2021-11-22 22:50:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 22:50:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 22:50:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2021-11-22 22:50:13,590 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2021-11-22 22:50:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 22:50:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write_command_callback [2021-11-22 22:50:13,590 INFO L138 BoogieDeclarations]: Found implementation of procedure write_command_callback [2021-11-22 22:50:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 22:50:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 22:50:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 22:50:13,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 22:50:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write_ctrl_callback [2021-11-22 22:50:13,591 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ctrl_callback [2021-11-22 22:50:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure read_iso_callback [2021-11-22 22:50:13,591 INFO L138 BoogieDeclarations]: Found implementation of procedure read_iso_callback [2021-11-22 22:50:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 22:50:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2021-11-22 22:50:13,592 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2021-11-22 22:50:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 22:50:13,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 22:50:14,396 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 22:50:14,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 22:50:21,636 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 22:50:21,660 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 22:50:21,660 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 22:50:21,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:50:21 BoogieIcfgContainer [2021-11-22 22:50:21,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 22:50:21,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 22:50:21,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 22:50:21,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 22:50:21,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:50:09" (1/3) ... [2021-11-22 22:50:21,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330573ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:50:21, skipping insertion in model container [2021-11-22 22:50:21,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:12" (2/3) ... [2021-11-22 22:50:21,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330573ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:50:21, skipping insertion in model container [2021-11-22 22:50:21,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:50:21" (3/3) ... [2021-11-22 22:50:21,671 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-22 22:50:21,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 22:50:21,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 22:50:21,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 22:50:21,743 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 [2021-11-22 22:50:21,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 22:50:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 3957 states, 3846 states have (on average 1.4864794591783672) internal successors, (5717), 3884 states have internal predecessors, (5717), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-22 22:50:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 22:50:21,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:21,830 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] [2021-11-22 22:50:21,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1328521866, now seen corresponding path program 1 times [2021-11-22 22:50:21,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:21,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605946150] [2021-11-22 22:50:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:21,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605946150] [2021-11-22 22:50:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605946150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:22,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:50:22,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905878178] [2021-11-22 22:50:22,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:22,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:22,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:22,420 INFO L87 Difference]: Start difference. First operand has 3957 states, 3846 states have (on average 1.4864794591783672) internal successors, (5717), 3884 states have internal predecessors, (5717), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-22 22:50:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:22,879 INFO L93 Difference]: Finished difference Result 11739 states and 17662 transitions. [2021-11-22 22:50:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:22,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-22 22:50:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:22,934 INFO L225 Difference]: With dead ends: 11739 [2021-11-22 22:50:22,934 INFO L226 Difference]: Without dead ends: 7763 [2021-11-22 22:50:22,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:22,955 INFO L933 BasicCegarLoop]: 5913 mSDtfsCounter, 5707 mSDsluCounter, 5793 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5707 SdHoareTripleChecker+Valid, 11706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:22,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5707 Valid, 11706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:50:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7763 states. [2021-11-22 22:50:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7763 to 7763. [2021-11-22 22:50:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7763 states, 7548 states have (on average 1.4754901960784315) internal successors, (11137), 7618 states have internal predecessors, (11137), 170 states have call successors, (170), 40 states have call predecessors, (170), 40 states have return successors, (170), 128 states have call predecessors, (170), 170 states have call successors, (170) [2021-11-22 22:50:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7763 states to 7763 states and 11477 transitions. [2021-11-22 22:50:23,246 INFO L78 Accepts]: Start accepts. Automaton has 7763 states and 11477 transitions. Word has length 37 [2021-11-22 22:50:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:23,247 INFO L470 AbstractCegarLoop]: Abstraction has 7763 states and 11477 transitions. [2021-11-22 22:50:23,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-22 22:50:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7763 states and 11477 transitions. [2021-11-22 22:50:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 22:50:23,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:23,250 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] [2021-11-22 22:50:23,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 22:50:23,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash 877730426, now seen corresponding path program 1 times [2021-11-22 22:50:23,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891460113] [2021-11-22 22:50:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:23,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:23,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:23,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891460113] [2021-11-22 22:50:23,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891460113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:23,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:23,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:50:23,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467824936] [2021-11-22 22:50:23,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:23,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:23,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:23,522 INFO L87 Difference]: Start difference. First operand 7763 states and 11477 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) [2021-11-22 22:50:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:24,002 INFO L93 Difference]: Finished difference Result 23219 states and 34860 transitions. [2021-11-22 22:50:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:24,002 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 [2021-11-22 22:50:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:24,069 INFO L225 Difference]: With dead ends: 23219 [2021-11-22 22:50:24,069 INFO L226 Difference]: Without dead ends: 15490 [2021-11-22 22:50:24,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:24,101 INFO L933 BasicCegarLoop]: 5984 mSDtfsCounter, 5816 mSDsluCounter, 5689 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5816 SdHoareTripleChecker+Valid, 11673 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:24,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5816 Valid, 11673 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:50:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15490 states. [2021-11-22 22:50:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15490 to 15478. [2021-11-22 22:50:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15478 states, 15053 states have (on average 1.4721982329103833) internal successors, (22161), 15189 states have internal predecessors, (22161), 340 states have call successors, (340), 80 states have call predecessors, (340), 80 states have return successors, (510), 256 states have call predecessors, (510), 340 states have call successors, (510) [2021-11-22 22:50:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15478 states to 15478 states and 23011 transitions. [2021-11-22 22:50:24,519 INFO L78 Accepts]: Start accepts. Automaton has 15478 states and 23011 transitions. Word has length 40 [2021-11-22 22:50:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 15478 states and 23011 transitions. [2021-11-22 22:50:24,520 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) [2021-11-22 22:50:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15478 states and 23011 transitions. [2021-11-22 22:50:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 22:50:24,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:24,522 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] [2021-11-22 22:50:24,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 22:50:24,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1439849856, now seen corresponding path program 1 times [2021-11-22 22:50:24,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134576019] [2021-11-22 22:50:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:24,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:24,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:24,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134576019] [2021-11-22 22:50:24,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134576019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:24,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:24,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:50:24,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939158184] [2021-11-22 22:50:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:24,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:24,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:24,750 INFO L87 Difference]: Start difference. First operand 15478 states and 23011 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) [2021-11-22 22:50:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:25,378 INFO L93 Difference]: Finished difference Result 46348 states and 70450 transitions. [2021-11-22 22:50:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:25,379 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 [2021-11-22 22:50:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:25,497 INFO L225 Difference]: With dead ends: 46348 [2021-11-22 22:50:25,498 INFO L226 Difference]: Without dead ends: 30904 [2021-11-22 22:50:25,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:25,554 INFO L933 BasicCegarLoop]: 6202 mSDtfsCounter, 5838 mSDsluCounter, 5750 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 11952 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:25,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5838 Valid, 11952 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:50:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30904 states. [2021-11-22 22:50:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30904 to 30893. [2021-11-22 22:50:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30893 states, 30048 states have (on average 1.4717452076677315) internal successors, (44223), 30316 states have internal predecessors, (44223), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-22 22:50:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30893 states to 30893 states and 46433 transitions. [2021-11-22 22:50:26,342 INFO L78 Accepts]: Start accepts. Automaton has 30893 states and 46433 transitions. Word has length 41 [2021-11-22 22:50:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:26,342 INFO L470 AbstractCegarLoop]: Abstraction has 30893 states and 46433 transitions. [2021-11-22 22:50:26,343 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) [2021-11-22 22:50:26,343 INFO L276 IsEmpty]: Start isEmpty. Operand 30893 states and 46433 transitions. [2021-11-22 22:50:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 22:50:26,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:26,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:26,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 22:50:26,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1685683013, now seen corresponding path program 1 times [2021-11-22 22:50:26,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140785456] [2021-11-22 22:50:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:26,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:26,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140785456] [2021-11-22 22:50:26,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140785456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:26,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:26,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:50:26,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741924752] [2021-11-22 22:50:26,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:26,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:26,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:26,578 INFO L87 Difference]: Start difference. First operand 30893 states and 46433 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-22 22:50:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:27,008 INFO L93 Difference]: Finished difference Result 30898 states and 46437 transitions. [2021-11-22 22:50:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:27,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-22 22:50:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:27,116 INFO L225 Difference]: With dead ends: 30898 [2021-11-22 22:50:27,116 INFO L226 Difference]: Without dead ends: 30896 [2021-11-22 22:50:27,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:27,139 INFO L933 BasicCegarLoop]: 6206 mSDtfsCounter, 5835 mSDsluCounter, 5749 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5835 SdHoareTripleChecker+Valid, 11955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:27,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5835 Valid, 11955 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:50:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30896 states. [2021-11-22 22:50:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30896 to 30894. [2021-11-22 22:50:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30894 states, 30049 states have (on average 1.4717295084695) internal successors, (44224), 30317 states have internal predecessors, (44224), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-22 22:50:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30894 states to 30894 states and 46434 transitions. [2021-11-22 22:50:28,037 INFO L78 Accepts]: Start accepts. Automaton has 30894 states and 46434 transitions. Word has length 42 [2021-11-22 22:50:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:28,038 INFO L470 AbstractCegarLoop]: Abstraction has 30894 states and 46434 transitions. [2021-11-22 22:50:28,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-22 22:50:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 30894 states and 46434 transitions. [2021-11-22 22:50:28,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 22:50:28,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:28,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:28,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 22:50:28,044 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:28,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash 716576299, now seen corresponding path program 1 times [2021-11-22 22:50:28,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630402469] [2021-11-22 22:50:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:28,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:28,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:28,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630402469] [2021-11-22 22:50:28,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630402469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:28,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:28,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:50:28,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721701008] [2021-11-22 22:50:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:28,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:28,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:28,259 INFO L87 Difference]: Start difference. First operand 30894 states and 46434 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-22 22:50:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:28,710 INFO L93 Difference]: Finished difference Result 30894 states and 46434 transitions. [2021-11-22 22:50:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:28,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-11-22 22:50:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:28,815 INFO L225 Difference]: With dead ends: 30894 [2021-11-22 22:50:28,816 INFO L226 Difference]: Without dead ends: 30892 [2021-11-22 22:50:28,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:28,831 INFO L933 BasicCegarLoop]: 5804 mSDtfsCounter, 5764 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5764 SdHoareTripleChecker+Valid, 5804 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:28,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5764 Valid, 5804 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:50:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30892 states. [2021-11-22 22:50:29,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30892 to 30892. [2021-11-22 22:50:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30892 states, 30048 states have (on average 1.4717119275825346) internal successors, (44222), 30315 states have internal predecessors, (44222), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-22 22:50:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30892 states to 30892 states and 46432 transitions. [2021-11-22 22:50:29,765 INFO L78 Accepts]: Start accepts. Automaton has 30892 states and 46432 transitions. Word has length 43 [2021-11-22 22:50:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:29,767 INFO L470 AbstractCegarLoop]: Abstraction has 30892 states and 46432 transitions. [2021-11-22 22:50:29,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-22 22:50:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 30892 states and 46432 transitions. [2021-11-22 22:50:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 22:50:29,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:29,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:29,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 22:50:29,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash 739039248, now seen corresponding path program 1 times [2021-11-22 22:50:29,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675539740] [2021-11-22 22:50:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:29,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:29,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:29,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675539740] [2021-11-22 22:50:29,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675539740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:29,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:29,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:50:29,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535870672] [2021-11-22 22:50:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:29,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:29,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:29,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:29,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:29,975 INFO L87 Difference]: Start difference. First operand 30892 states and 46432 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-11-22 22:50:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:30,612 INFO L93 Difference]: Finished difference Result 30892 states and 46432 transitions. [2021-11-22 22:50:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2021-11-22 22:50:30,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:30,705 INFO L225 Difference]: With dead ends: 30892 [2021-11-22 22:50:30,706 INFO L226 Difference]: Without dead ends: 30852 [2021-11-22 22:50:30,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:30,722 INFO L933 BasicCegarLoop]: 5803 mSDtfsCounter, 5761 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5761 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:30,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5761 Valid, 5803 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:50:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30852 states. [2021-11-22 22:50:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30852 to 30852. [2021-11-22 22:50:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30852 states, 30009 states have (on average 1.4718917658035922) internal successors, (44170), 30275 states have internal predecessors, (44170), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-22 22:50:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30852 states to 30852 states and 46380 transitions. [2021-11-22 22:50:31,653 INFO L78 Accepts]: Start accepts. Automaton has 30852 states and 46380 transitions. Word has length 44 [2021-11-22 22:50:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 30852 states and 46380 transitions. [2021-11-22 22:50:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-11-22 22:50:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30852 states and 46380 transitions. [2021-11-22 22:50:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 22:50:31,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:31,701 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:31,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 22:50:31,702 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:31,703 INFO L85 PathProgramCache]: Analyzing trace with hash -556728302, now seen corresponding path program 1 times [2021-11-22 22:50:31,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:31,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149761773] [2021-11-22 22:50:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:31,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:50:32,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:32,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149761773] [2021-11-22 22:50:32,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149761773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:32,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:32,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:50:32,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318004867] [2021-11-22 22:50:32,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:32,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:32,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:32,120 INFO L87 Difference]: Start difference. First operand 30852 states and 46380 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:50:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:33,577 INFO L93 Difference]: Finished difference Result 87939 states and 132669 transitions. [2021-11-22 22:50:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-22 22:50:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:33,797 INFO L225 Difference]: With dead ends: 87939 [2021-11-22 22:50:33,797 INFO L226 Difference]: Without dead ends: 57121 [2021-11-22 22:50:33,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:33,857 INFO L933 BasicCegarLoop]: 5944 mSDtfsCounter, 4980 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 11680 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:33,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4980 Valid, 11680 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:50:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57121 states. [2021-11-22 22:50:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57121 to 57016. [2021-11-22 22:50:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57016 states, 55373 states have (on average 1.479114369819226) internal successors, (81903), 55903 states have internal predecessors, (81903), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-22 22:50:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57016 states to 57016 states and 86193 transitions. [2021-11-22 22:50:35,376 INFO L78 Accepts]: Start accepts. Automaton has 57016 states and 86193 transitions. Word has length 104 [2021-11-22 22:50:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:35,377 INFO L470 AbstractCegarLoop]: Abstraction has 57016 states and 86193 transitions. [2021-11-22 22:50:35,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:50:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 57016 states and 86193 transitions. [2021-11-22 22:50:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-22 22:50:35,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:35,442 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:35,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 22:50:35,443 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1117343723, now seen corresponding path program 1 times [2021-11-22 22:50:35,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637710406] [2021-11-22 22:50:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:35,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 22:50:35,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637710406] [2021-11-22 22:50:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637710406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:35,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:35,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:50:35,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469964122] [2021-11-22 22:50:35,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:35,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:50:35,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:50:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:50:35,630 INFO L87 Difference]: Start difference. First operand 57016 states and 86193 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:50:37,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:37,757 INFO L93 Difference]: Finished difference Result 130792 states and 197262 transitions. [2021-11-22 22:50:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:50:37,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-22 22:50:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:38,022 INFO L225 Difference]: With dead ends: 130792 [2021-11-22 22:50:38,022 INFO L226 Difference]: Without dead ends: 73810 [2021-11-22 22:50:38,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:50:38,128 INFO L933 BasicCegarLoop]: 9196 mSDtfsCounter, 9291 mSDsluCounter, 5867 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9291 SdHoareTripleChecker+Valid, 15063 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:38,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9291 Valid, 15063 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 22:50:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73810 states. [2021-11-22 22:50:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73810 to 57024. [2021-11-22 22:50:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57024 states, 55381 states have (on average 1.4789368194868275) internal successors, (81905), 55911 states have internal predecessors, (81905), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-22 22:50:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57024 states to 57024 states and 86195 transitions. [2021-11-22 22:50:39,995 INFO L78 Accepts]: Start accepts. Automaton has 57024 states and 86195 transitions. Word has length 126 [2021-11-22 22:50:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:39,996 INFO L470 AbstractCegarLoop]: Abstraction has 57024 states and 86195 transitions. [2021-11-22 22:50:39,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:50:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 57024 states and 86195 transitions. [2021-11-22 22:50:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-22 22:50:40,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:40,040 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:40,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 22:50:40,041 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash -157217401, now seen corresponding path program 1 times [2021-11-22 22:50:40,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:40,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557101199] [2021-11-22 22:50:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:40,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 22:50:40,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:40,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557101199] [2021-11-22 22:50:40,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557101199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:40,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:50:40,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836224261] [2021-11-22 22:50:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:40,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:40,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:40,272 INFO L87 Difference]: Start difference. First operand 57024 states and 86195 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-22 22:50:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:41,590 INFO L93 Difference]: Finished difference Result 114350 states and 172782 transitions. [2021-11-22 22:50:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:41,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 [2021-11-22 22:50:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:41,814 INFO L225 Difference]: With dead ends: 114350 [2021-11-22 22:50:41,814 INFO L226 Difference]: Without dead ends: 57360 [2021-11-22 22:50:41,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:41,929 INFO L933 BasicCegarLoop]: 5792 mSDtfsCounter, 51 mSDsluCounter, 5783 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 11575 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:41,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 11575 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:50:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57360 states. [2021-11-22 22:50:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57360 to 57048. [2021-11-22 22:50:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57048 states, 55405 states have (on average 1.4787293565562676) internal successors, (81929), 55935 states have internal predecessors, (81929), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-22 22:50:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57048 states to 57048 states and 86219 transitions. [2021-11-22 22:50:43,516 INFO L78 Accepts]: Start accepts. Automaton has 57048 states and 86219 transitions. Word has length 128 [2021-11-22 22:50:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:43,516 INFO L470 AbstractCegarLoop]: Abstraction has 57048 states and 86219 transitions. [2021-11-22 22:50:43,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-22 22:50:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 57048 states and 86219 transitions. [2021-11-22 22:50:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 22:50:43,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:43,555 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:43,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 22:50:43,555 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash -713213793, now seen corresponding path program 1 times [2021-11-22 22:50:43,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567831156] [2021-11-22 22:50:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:43,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 22:50:43,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:43,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567831156] [2021-11-22 22:50:43,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567831156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:43,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:43,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:50:43,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107787854] [2021-11-22 22:50:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:43,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:50:43,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:50:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:43,750 INFO L87 Difference]: Start difference. First operand 57048 states and 86219 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) [2021-11-22 22:50:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:45,066 INFO L93 Difference]: Finished difference Result 114350 states and 172758 transitions. [2021-11-22 22:50:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:50:45,067 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 132 [2021-11-22 22:50:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:45,461 INFO L225 Difference]: With dead ends: 114350 [2021-11-22 22:50:45,461 INFO L226 Difference]: Without dead ends: 57336 [2021-11-22 22:50:45,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:50:45,564 INFO L933 BasicCegarLoop]: 5777 mSDtfsCounter, 36 mSDsluCounter, 5765 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11542 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:45,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 11542 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:50:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57336 states. [2021-11-22 22:50:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57336 to 57096. [2021-11-22 22:50:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57096 states, 55453 states have (on average 1.4783149694335744) internal successors, (81977), 55983 states have internal predecessors, (81977), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-22 22:50:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57096 states to 57096 states and 86267 transitions. [2021-11-22 22:50:47,205 INFO L78 Accepts]: Start accepts. Automaton has 57096 states and 86267 transitions. Word has length 132 [2021-11-22 22:50:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:47,206 INFO L470 AbstractCegarLoop]: Abstraction has 57096 states and 86267 transitions. [2021-11-22 22:50:47,206 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) [2021-11-22 22:50:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 57096 states and 86267 transitions. [2021-11-22 22:50:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 22:50:47,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:47,254 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:47,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 22:50:47,254 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:47,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1011170879, now seen corresponding path program 1 times [2021-11-22 22:50:47,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:47,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636363119] [2021-11-22 22:50:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:47,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 22:50:47,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:47,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636363119] [2021-11-22 22:50:47,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636363119] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:50:47,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624102740] [2021-11-22 22:50:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:47,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:50:47,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:50:47,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 22:50:47,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 22:50:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:48,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 6056 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 22:50:48,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:50:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 22:50:48,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 22:50:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 22:50:49,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624102740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 22:50:49,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 22:50:49,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 22:50:49,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544829108] [2021-11-22 22:50:49,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 22:50:49,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:50:49,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:50:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:50:49,111 INFO L87 Difference]: Start difference. First operand 57096 states and 86267 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2021-11-22 22:50:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:50:50,675 INFO L93 Difference]: Finished difference Result 114734 states and 173214 transitions. [2021-11-22 22:50:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:50:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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 144 [2021-11-22 22:50:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:50:50,874 INFO L225 Difference]: With dead ends: 114734 [2021-11-22 22:50:50,875 INFO L226 Difference]: Without dead ends: 57672 [2021-11-22 22:50:50,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:50:50,993 INFO L933 BasicCegarLoop]: 5777 mSDtfsCounter, 139 mSDsluCounter, 17277 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 23054 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:50:50,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 23054 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:50:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57672 states. [2021-11-22 22:50:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57672 to 57672. [2021-11-22 22:50:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57672 states, 56029 states have (on average 1.474254403969373) internal successors, (82601), 56559 states have internal predecessors, (82601), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-22 22:50:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57672 states to 57672 states and 86891 transitions. [2021-11-22 22:50:52,612 INFO L78 Accepts]: Start accepts. Automaton has 57672 states and 86891 transitions. Word has length 144 [2021-11-22 22:50:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:50:52,612 INFO L470 AbstractCegarLoop]: Abstraction has 57672 states and 86891 transitions. [2021-11-22 22:50:52,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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) [2021-11-22 22:50:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 57672 states and 86891 transitions. [2021-11-22 22:50:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-22 22:50:52,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:50:52,668 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:50:52,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 22:50:52,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 22:50:52,896 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:50:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:50:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1014127985, now seen corresponding path program 1 times [2021-11-22 22:50:52,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:50:52,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557281997] [2021-11-22 22:50:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:50:52,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:50:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-22 22:50:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-22 22:50:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:50:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 22:50:53,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:50:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557281997] [2021-11-22 22:50:53,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557281997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:50:53,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:50:53,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:50:53,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584737763] [2021-11-22 22:50:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:50:53,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:50:53,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:50:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:50:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:50:53,229 INFO L87 Difference]: Start difference. First operand 57672 states and 86891 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 22:51:02,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:51:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:04,799 INFO L93 Difference]: Finished difference Result 152496 states and 229201 transitions. [2021-11-22 22:51:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:51:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 162 [2021-11-22 22:51:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:05,083 INFO L225 Difference]: With dead ends: 152496 [2021-11-22 22:51:05,083 INFO L226 Difference]: Without dead ends: 94858 [2021-11-22 22:51:05,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:51:05,188 INFO L933 BasicCegarLoop]: 8832 mSDtfsCounter, 3732 mSDsluCounter, 11325 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 104 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3803 SdHoareTripleChecker+Valid, 20157 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:05,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3803 Valid, 20157 Invalid, 3515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 3410 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-11-22 22:51:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94858 states. [2021-11-22 22:51:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94858 to 59516. [2021-11-22 22:51:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59516 states, 57693 states have (on average 1.4734716516735133) internal successors, (85009), 58295 states have internal predecessors, (85009), 1332 states have call successors, (1332), 320 states have call predecessors, (1332), 488 states have return successors, (3524), 1104 states have call predecessors, (3524), 1332 states have call successors, (3524) [2021-11-22 22:51:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59516 states to 59516 states and 89865 transitions. [2021-11-22 22:51:07,309 INFO L78 Accepts]: Start accepts. Automaton has 59516 states and 89865 transitions. Word has length 162 [2021-11-22 22:51:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:07,309 INFO L470 AbstractCegarLoop]: Abstraction has 59516 states and 89865 transitions. [2021-11-22 22:51:07,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 22:51:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 59516 states and 89865 transitions. [2021-11-22 22:51:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 22:51:07,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:07,361 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:51:07,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 22:51:07,362 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:51:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1518287231, now seen corresponding path program 1 times [2021-11-22 22:51:07,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:07,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016531736] [2021-11-22 22:51:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:07,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-22 22:51:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-22 22:51:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 22:51:07,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:07,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016531736] [2021-11-22 22:51:07,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016531736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:07,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:07,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:51:07,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030070539] [2021-11-22 22:51:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:07,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:51:07,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:51:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:51:07,607 INFO L87 Difference]: Start difference. First operand 59516 states and 89865 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 22:51:15,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:51:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:18,104 INFO L93 Difference]: Finished difference Result 154332 states and 232159 transitions. [2021-11-22 22:51:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:51:18,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2021-11-22 22:51:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:18,509 INFO L225 Difference]: With dead ends: 154332 [2021-11-22 22:51:18,509 INFO L226 Difference]: Without dead ends: 94850 [2021-11-22 22:51:18,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:51:18,596 INFO L933 BasicCegarLoop]: 8765 mSDtfsCounter, 3727 mSDsluCounter, 11289 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3798 SdHoareTripleChecker+Valid, 20054 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:18,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3798 Valid, 20054 Invalid, 3491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 3385 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-22 22:51:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94850 states. [2021-11-22 22:51:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94850 to 59532. [2021-11-22 22:51:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59532 states, 57709 states have (on average 1.4733403801833336) internal successors, (85025), 58311 states have internal predecessors, (85025), 1332 states have call successors, (1332), 320 states have call predecessors, (1332), 488 states have return successors, (3524), 1104 states have call predecessors, (3524), 1332 states have call successors, (3524) [2021-11-22 22:51:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59532 states to 59532 states and 89881 transitions. [2021-11-22 22:51:20,663 INFO L78 Accepts]: Start accepts. Automaton has 59532 states and 89881 transitions. Word has length 166 [2021-11-22 22:51:20,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:20,664 INFO L470 AbstractCegarLoop]: Abstraction has 59532 states and 89881 transitions. [2021-11-22 22:51:20,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 22:51:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 59532 states and 89881 transitions. [2021-11-22 22:51:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-22 22:51:20,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:20,711 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:51:20,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 22:51:20,711 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:51:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1292337407, now seen corresponding path program 2 times [2021-11-22 22:51:20,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:20,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278316648] [2021-11-22 22:51:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:20,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-22 22:51:20,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:20,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278316648] [2021-11-22 22:51:20,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278316648] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:51:20,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57998535] [2021-11-22 22:51:20,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 22:51:20,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:51:20,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:51:20,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 22:51:20,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 22:51:22,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 22:51:22,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 22:51:22,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 5132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 22:51:22,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:51:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 22:51:22,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:51:22,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57998535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:22,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:51:22,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 22:51:22,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278459778] [2021-11-22 22:51:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:22,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:22,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:51:22,400 INFO L87 Difference]: Start difference. First operand 59532 states and 89881 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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)