./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--hisax--hisax_st5481.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.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 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:03:19,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:03:19,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:03:19,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:03:19,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:03:19,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:03:19,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:03:19,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:03:19,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:03:19,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:03:19,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:03:19,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:03:19,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:03:19,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:03:19,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:03:19,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:03:19,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:03:19,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:03:19,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:03:19,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:03:19,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:03:19,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:03:19,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:03:19,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:03:19,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:03:19,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:03:19,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:03:19,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:03:19,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:03:19,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:03:19,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:03:19,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:03:19,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:03:19,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:03:19,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:03:19,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:03:19,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:03:19,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:03:19,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:03:19,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:03:19,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:03:19,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:03:19,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:03:19,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:03:19,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:03:19,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:03:19,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:03:19,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:03:19,978 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:03:19,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:03:19,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:03:19,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:03:19,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:03:19,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:03:19,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:03:19,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:03:19,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:03:19,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:03:19,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:03:19,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:03:19,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:03:19,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:03:19,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:03:19,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:03:19,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:03:19,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:03:19,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:03:19,982 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:03:19,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:03:19,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:03:19,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:03:19,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd [2021-11-06 14:03:20,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:03:20,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:03:20,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:03:20,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:03:20,196 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:03:20,197 INFO L432 ainManager$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--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-06 14:03:20,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3917ccd1/ec1f6359ec734b899a5f2677a42176ba/FLAG7cea965cb [2021-11-06 14:03:20,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:03:20,904 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--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-06 14:03:20,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3917ccd1/ec1f6359ec734b899a5f2677a42176ba/FLAG7cea965cb [2021-11-06 14:03:21,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3917ccd1/ec1f6359ec734b899a5f2677a42176ba [2021-11-06 14:03:21,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:03:21,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:03:21,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:03:21,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:03:21,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:03:21,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:03:21" (1/1) ... [2021-11-06 14:03:21,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c425092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:21, skipping insertion in model container [2021-11-06 14:03:21,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:03:21" (1/1) ... [2021-11-06 14:03:21,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:03:21,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:03:21,666 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-06 14:03:22,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:03:22,476 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:03:22,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-06 14:03:22,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:03:22,849 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:03:22,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22 WrapperNode [2021-11-06 14:03:22,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:03:22,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:03:22,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:03:22,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:03:22,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:22,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:03:23,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:03:23,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:03:23,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:03:23,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:03:23,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:03:23,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:03:23,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:03:23,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (1/1) ... [2021-11-06 14:03:23,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:03:23,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:03:23,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 14:03:23,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 14:03:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2021-11-06 14:03:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2021-11-06 14:03:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2021-11-06 14:03:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2021-11-06 14:03:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:03:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:03:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:03:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:03:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2021-11-06 14:03:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2021-11-06 14:03:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2021-11-06 14:03:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2021-11-06 14:03:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2021-11-06 14:03:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2021-11-06 14:03:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2021-11-06 14:03:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2021-11-06 14:03:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2021-11-06 14:03:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2021-11-06 14:03:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2021-11-06 14:03:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2021-11-06 14:03:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2021-11-06 14:03:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2021-11-06 14:03:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2021-11-06 14:03:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2021-11-06 14:03:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2021-11-06 14:03:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2021-11-06 14:03:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-06 14:03:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-06 14:03:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2021-11-06 14:03:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2021-11-06 14:03:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:03:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-06 14:03:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-06 14:03:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-06 14:03:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-06 14:03:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2021-11-06 14:03:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2021-11-06 14:03:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2021-11-06 14:03:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2021-11-06 14:03:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2021-11-06 14:03:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2021-11-06 14:03:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-06 14:03:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-06 14:03:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-06 14:03:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-06 14:03:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:03:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-06 14:03:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-06 14:03:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2021-11-06 14:03:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2021-11-06 14:03:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:03:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2021-11-06 14:03:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2021-11-06 14:03:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:03:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2021-11-06 14:03:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2021-11-06 14:03:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2021-11-06 14:03:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2021-11-06 14:03:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2021-11-06 14:03:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2021-11-06 14:03:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2021-11-06 14:03:23,641 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2021-11-06 14:03:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2021-11-06 14:03:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2021-11-06 14:03:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2021-11-06 14:03:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2021-11-06 14:03:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2021-11-06 14:03:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2021-11-06 14:03:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2021-11-06 14:03:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2021-11-06 14:03:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2021-11-06 14:03:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2021-11-06 14:03:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:03:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2021-11-06 14:03:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2021-11-06 14:03:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:03:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:03:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2021-11-06 14:03:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2021-11-06 14:03:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2021-11-06 14:03:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2021-11-06 14:03:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2021-11-06 14:03:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2021-11-06 14:03:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2021-11-06 14:03:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2021-11-06 14:03:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:03:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-06 14:03:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-06 14:03:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:03:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2021-11-06 14:03:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2021-11-06 14:03:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:03:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:03:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:03:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2021-11-06 14:03:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2021-11-06 14:03:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2021-11-06 14:03:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2021-11-06 14:03:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2021-11-06 14:03:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2021-11-06 14:03:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2021-11-06 14:03:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2021-11-06 14:03:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2021-11-06 14:03:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2021-11-06 14:03:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2021-11-06 14:03:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2021-11-06 14:03:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2021-11-06 14:03:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2021-11-06 14:03:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2021-11-06 14:03:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2021-11-06 14:03:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2021-11-06 14:03:23,651 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2021-11-06 14:03:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2021-11-06 14:03:23,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2021-11-06 14:03:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:03:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:03:23,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:03:46,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:03:46,658 INFO L299 CfgBuilder]: Removed 929 assume(true) statements. [2021-11-06 14:03:46,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:03:46 BoogieIcfgContainer [2021-11-06 14:03:46,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:03:46,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:03:46,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:03:46,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:03:46,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:03:21" (1/3) ... [2021-11-06 14:03:46,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bd1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:03:46, skipping insertion in model container [2021-11-06 14:03:46,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:03:22" (2/3) ... [2021-11-06 14:03:46,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bd1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:03:46, skipping insertion in model container [2021-11-06 14:03:46,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:03:46" (3/3) ... [2021-11-06 14:03:46,668 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-06 14:03:46,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:03:46,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:03:46,713 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:03:46,718 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 14:03:46,718 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:03:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 1442 states, 1277 states have (on average 1.4064212999216914) internal successors, (1796), 1317 states have internal predecessors, (1796), 108 states have call successors, (108), 51 states have call predecessors, (108), 51 states have return successors, (108), 87 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-06 14:03:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-06 14:03:46,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:46,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:46,764 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)] === [2021-11-06 14:03:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1160909501, now seen corresponding path program 1 times [2021-11-06 14:03:46,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:46,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053971621] [2021-11-06 14:03:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:46,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:47,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:47,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053971621] [2021-11-06 14:03:47,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053971621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:47,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:47,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:03:47,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813992379] [2021-11-06 14:03:47,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:47,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:47,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:47,465 INFO L87 Difference]: Start difference. First operand has 1442 states, 1277 states have (on average 1.4064212999216914) internal successors, (1796), 1317 states have internal predecessors, (1796), 108 states have call successors, (108), 51 states have call predecessors, (108), 51 states have return successors, (108), 87 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:49,957 INFO L93 Difference]: Finished difference Result 4262 states and 6171 transitions. [2021-11-06 14:03:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-06 14:03:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:49,992 INFO L225 Difference]: With dead ends: 4262 [2021-11-06 14:03:49,993 INFO L226 Difference]: Without dead ends: 2807 [2021-11-06 14:03:50,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-06 14:03:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2807. [2021-11-06 14:03:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2484 states have (on average 1.3719806763285025) internal successors, (3408), 2558 states have internal predecessors, (3408), 216 states have call successors, (216), 102 states have call predecessors, (216), 102 states have return successors, (216), 174 states have call predecessors, (216), 216 states have call successors, (216) [2021-11-06 14:03:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3840 transitions. [2021-11-06 14:03:50,192 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3840 transitions. Word has length 17 [2021-11-06 14:03:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:50,193 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3840 transitions. [2021-11-06 14:03:50,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3840 transitions. [2021-11-06 14:03:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 14:03:50,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:50,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:50,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:03:50,198 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)] === [2021-11-06 14:03:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1148775864, now seen corresponding path program 1 times [2021-11-06 14:03:50,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:50,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110209498] [2021-11-06 14:03:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:50,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:50,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:50,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110209498] [2021-11-06 14:03:50,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110209498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:50,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:50,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:03:50,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636372302] [2021-11-06 14:03:50,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:50,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:50,520 INFO L87 Difference]: Start difference. First operand 2807 states and 3840 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:50,688 INFO L93 Difference]: Finished difference Result 2837 states and 3868 transitions. [2021-11-06 14:03:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-06 14:03:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:50,703 INFO L225 Difference]: With dead ends: 2837 [2021-11-06 14:03:50,703 INFO L226 Difference]: Without dead ends: 2822 [2021-11-06 14:03:50,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-11-06 14:03:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2807. [2021-11-06 14:03:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2484 states have (on average 1.3715780998389695) internal successors, (3407), 2558 states have internal predecessors, (3407), 216 states have call successors, (216), 102 states have call predecessors, (216), 102 states have return successors, (216), 174 states have call predecessors, (216), 216 states have call successors, (216) [2021-11-06 14:03:50,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3839 transitions. [2021-11-06 14:03:50,796 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3839 transitions. Word has length 23 [2021-11-06 14:03:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:50,796 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3839 transitions. [2021-11-06 14:03:50,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3839 transitions. [2021-11-06 14:03:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 14:03:50,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:50,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:50,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:03:50,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:03:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1148835446, now seen corresponding path program 1 times [2021-11-06 14:03:50,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:50,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894532892] [2021-11-06 14:03:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:50,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:51,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:51,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894532892] [2021-11-06 14:03:51,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894532892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:51,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:51,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:03:51,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877935486] [2021-11-06 14:03:51,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:51,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:51,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:51,237 INFO L87 Difference]: Start difference. First operand 2807 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:51,670 INFO L93 Difference]: Finished difference Result 8403 states and 12146 transitions. [2021-11-06 14:03:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:51,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-11-06 14:03:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:51,701 INFO L225 Difference]: With dead ends: 8403 [2021-11-06 14:03:51,702 INFO L226 Difference]: Without dead ends: 5604 [2021-11-06 14:03:51,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2021-11-06 14:03:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5592. [2021-11-06 14:03:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 4951 states have (on average 1.3609371844071905) internal successors, (6738), 5095 states have internal predecessors, (6738), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7818 transitions. [2021-11-06 14:03:51,915 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7818 transitions. Word has length 23 [2021-11-06 14:03:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:51,916 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 7818 transitions. [2021-11-06 14:03:51,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7818 transitions. [2021-11-06 14:03:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 14:03:51,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:51,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:51,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:03:51,925 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:03:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1254163039, now seen corresponding path program 1 times [2021-11-06 14:03:51,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:51,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768360752] [2021-11-06 14:03:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:51,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:52,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:52,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768360752] [2021-11-06 14:03:52,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768360752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:52,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:52,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:03:52,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29724741] [2021-11-06 14:03:52,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:52,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:52,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:52,414 INFO L87 Difference]: Start difference. First operand 5592 states and 7818 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:52,537 INFO L93 Difference]: Finished difference Result 5592 states and 7818 transitions. [2021-11-06 14:03:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-11-06 14:03:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:52,573 INFO L225 Difference]: With dead ends: 5592 [2021-11-06 14:03:52,573 INFO L226 Difference]: Without dead ends: 5590 [2021-11-06 14:03:52,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-11-06 14:03:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5590. [2021-11-06 14:03:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4950 states have (on average 1.360808080808081) internal successors, (6736), 5093 states have internal predecessors, (6736), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7816 transitions. [2021-11-06 14:03:52,771 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7816 transitions. Word has length 24 [2021-11-06 14:03:52,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:52,772 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7816 transitions. [2021-11-06 14:03:52,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7816 transitions. [2021-11-06 14:03:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 14:03:52,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:52,773 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:52,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:03:52,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:03:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 224351136, now seen corresponding path program 1 times [2021-11-06 14:03:52,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:52,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204596380] [2021-11-06 14:03:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:52,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:53,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:53,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204596380] [2021-11-06 14:03:53,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204596380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:53,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:53,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:03:53,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057963280] [2021-11-06 14:03:53,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:53,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:53,005 INFO L87 Difference]: Start difference. First operand 5590 states and 7816 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:53,118 INFO L93 Difference]: Finished difference Result 5590 states and 7816 transitions. [2021-11-06 14:03:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:53,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-11-06 14:03:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:53,147 INFO L225 Difference]: With dead ends: 5590 [2021-11-06 14:03:53,148 INFO L226 Difference]: Without dead ends: 5588 [2021-11-06 14:03:53,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2021-11-06 14:03:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5588. [2021-11-06 14:03:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 4949 states have (on average 1.3606789250353606) internal successors, (6734), 5091 states have internal predecessors, (6734), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 7814 transitions. [2021-11-06 14:03:53,358 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 7814 transitions. Word has length 25 [2021-11-06 14:03:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:53,358 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 7814 transitions. [2021-11-06 14:03:53,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 7814 transitions. [2021-11-06 14:03:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 14:03:53,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:53,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:03:53,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:03:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1635046775, now seen corresponding path program 1 times [2021-11-06 14:03:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:53,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615411197] [2021-11-06 14:03:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:53,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:53,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:53,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615411197] [2021-11-06 14:03:53,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615411197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:53,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:53,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:03:53,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530645019] [2021-11-06 14:03:53,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:53,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:53,553 INFO L87 Difference]: Start difference. First operand 5588 states and 7814 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:53,711 INFO L93 Difference]: Finished difference Result 5588 states and 7814 transitions. [2021-11-06 14:03:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:53,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-06 14:03:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:53,743 INFO L225 Difference]: With dead ends: 5588 [2021-11-06 14:03:53,744 INFO L226 Difference]: Without dead ends: 5586 [2021-11-06 14:03:53,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-11-06 14:03:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5586. [2021-11-06 14:03:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4948 states have (on average 1.360549717057397) internal successors, (6732), 5089 states have internal predecessors, (6732), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7812 transitions. [2021-11-06 14:03:53,943 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7812 transitions. Word has length 26 [2021-11-06 14:03:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:53,946 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 7812 transitions. [2021-11-06 14:03:53,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7812 transitions. [2021-11-06 14:03:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 14:03:53,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:53,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:53,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:03:53,948 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:03:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash 853160138, now seen corresponding path program 1 times [2021-11-06 14:03:53,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:53,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717629687] [2021-11-06 14:03:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:53,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:54,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:54,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717629687] [2021-11-06 14:03:54,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717629687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:54,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:54,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:03:54,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258523587] [2021-11-06 14:03:54,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:54,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:54,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:54,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:54,170 INFO L87 Difference]: Start difference. First operand 5586 states and 7812 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:54,292 INFO L93 Difference]: Finished difference Result 5586 states and 7812 transitions. [2021-11-06 14:03:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-06 14:03:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:54,325 INFO L225 Difference]: With dead ends: 5586 [2021-11-06 14:03:54,325 INFO L226 Difference]: Without dead ends: 5575 [2021-11-06 14:03:54,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-11-06 14:03:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5575. [2021-11-06 14:03:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 4938 states have (on average 1.3606723369785338) internal successors, (6719), 5078 states have internal predecessors, (6719), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 7799 transitions. [2021-11-06 14:03:54,516 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 7799 transitions. Word has length 27 [2021-11-06 14:03:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:54,517 INFO L470 AbstractCegarLoop]: Abstraction has 5575 states and 7799 transitions. [2021-11-06 14:03:54,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:54,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 7799 transitions. [2021-11-06 14:03:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 14:03:54,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:54,524 INFO L513 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] [2021-11-06 14:03:54,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:03:54,524 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)] === [2021-11-06 14:03:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash -848641613, now seen corresponding path program 1 times [2021-11-06 14:03:54,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:54,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160834457] [2021-11-06 14:03:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:54,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:03:54,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:54,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160834457] [2021-11-06 14:03:54,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160834457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:54,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:54,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:03:54,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598041091] [2021-11-06 14:03:54,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:54,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:54,733 INFO L87 Difference]: Start difference. First operand 5575 states and 7799 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:55,083 INFO L93 Difference]: Finished difference Result 11226 states and 15706 transitions. [2021-11-06 14:03:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 14:03:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:55,106 INFO L225 Difference]: With dead ends: 11226 [2021-11-06 14:03:55,106 INFO L226 Difference]: Without dead ends: 5659 [2021-11-06 14:03:55,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2021-11-06 14:03:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5653. [2021-11-06 14:03:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 5016 states have (on average 1.3610446570972887) internal successors, (6827), 5156 states have internal predecessors, (6827), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 7907 transitions. [2021-11-06 14:03:55,318 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 7907 transitions. Word has length 68 [2021-11-06 14:03:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:55,318 INFO L470 AbstractCegarLoop]: Abstraction has 5653 states and 7907 transitions. [2021-11-06 14:03:55,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 7907 transitions. [2021-11-06 14:03:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 14:03:55,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:55,323 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-06 14:03:55,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:03:55,324 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)] === [2021-11-06 14:03:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash 381165906, now seen corresponding path program 1 times [2021-11-06 14:03:55,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:55,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014352656] [2021-11-06 14:03:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:55,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:03:55,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:55,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014352656] [2021-11-06 14:03:55,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014352656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:55,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:55,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:03:55,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709617020] [2021-11-06 14:03:55,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:03:55,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:03:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:55,536 INFO L87 Difference]: Start difference. First operand 5653 states and 7907 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:55,750 INFO L93 Difference]: Finished difference Result 11314 states and 15829 transitions. [2021-11-06 14:03:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:03:55,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 14:03:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:55,776 INFO L225 Difference]: With dead ends: 11314 [2021-11-06 14:03:55,776 INFO L226 Difference]: Without dead ends: 5669 [2021-11-06 14:03:55,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:03:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-11-06 14:03:56,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5661. [2021-11-06 14:03:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5661 states, 5024 states have (on average 1.36046974522293) internal successors, (6835), 5164 states have internal predecessors, (6835), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 7915 transitions. [2021-11-06 14:03:56,077 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 7915 transitions. Word has length 83 [2021-11-06 14:03:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:56,079 INFO L470 AbstractCegarLoop]: Abstraction has 5661 states and 7915 transitions. [2021-11-06 14:03:56,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 7915 transitions. [2021-11-06 14:03:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 14:03:56,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:56,088 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:03:56,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:03:56,089 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)] === [2021-11-06 14:03:56,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1712946834, now seen corresponding path program 1 times [2021-11-06 14:03:56,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:56,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302521546] [2021-11-06 14:03:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:56,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:03:56,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:56,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302521546] [2021-11-06 14:03:56,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302521546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:03:56,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346571279] [2021-11-06 14:03:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:56,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:03:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:03:56,378 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) [2021-11-06 14:03:56,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:03:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:57,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 3910 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:03:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:03:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:03:58,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346571279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:03:58,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:03:58,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:03:58,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636325367] [2021-11-06 14:03:58,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:03:58,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:03:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:03:58,182 INFO L87 Difference]: Start difference. First operand 5661 states and 7915 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:58,415 INFO L93 Difference]: Finished difference Result 11330 states and 15845 transitions. [2021-11-06 14:03:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:03:58,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 85 [2021-11-06 14:03:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:58,440 INFO L225 Difference]: With dead ends: 11330 [2021-11-06 14:03:58,441 INFO L226 Difference]: Without dead ends: 5677 [2021-11-06 14:03:58,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:03:58,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-11-06 14:03:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5677. [2021-11-06 14:03:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5040 states have (on average 1.3593253968253969) internal successors, (6851), 5180 states have internal predecessors, (6851), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:03:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7931 transitions. [2021-11-06 14:03:58,657 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7931 transitions. Word has length 85 [2021-11-06 14:03:58,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:58,658 INFO L470 AbstractCegarLoop]: Abstraction has 5677 states and 7931 transitions. [2021-11-06 14:03:58,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:03:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7931 transitions. [2021-11-06 14:03:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 14:03:58,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:58,663 INFO L513 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] [2021-11-06 14:03:58,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 14:03:58,887 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,SelfDestructingSolverStorable9 [2021-11-06 14:03:58,888 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)] === [2021-11-06 14:03:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash 184371850, now seen corresponding path program 2 times [2021-11-06 14:03:58,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:58,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505148522] [2021-11-06 14:03:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:58,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:03:59,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:59,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505148522] [2021-11-06 14:03:59,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505148522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:03:59,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:03:59,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:03:59,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929391111] [2021-11-06 14:03:59,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:03:59,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:03:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:03:59,151 INFO L87 Difference]: Start difference. First operand 5677 states and 7931 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:01,794 INFO L93 Difference]: Finished difference Result 17023 states and 23783 transitions. [2021-11-06 14:04:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:04:01,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 87 [2021-11-06 14:04:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:01,843 INFO L225 Difference]: With dead ends: 17023 [2021-11-06 14:04:01,843 INFO L226 Difference]: Without dead ends: 11354 [2021-11-06 14:04:01,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:04:01,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2021-11-06 14:04:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 5685. [2021-11-06 14:04:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5048 states have (on average 1.358755942947702) internal successors, (6859), 5188 states have internal predecessors, (6859), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7939 transitions. [2021-11-06 14:04:02,152 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7939 transitions. Word has length 87 [2021-11-06 14:04:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:02,153 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 7939 transitions. [2021-11-06 14:04:02,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7939 transitions. [2021-11-06 14:04:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 14:04:02,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:02,164 INFO L513 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] [2021-11-06 14:04:02,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:04:02,164 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)] === [2021-11-06 14:04:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -402434164, now seen corresponding path program 1 times [2021-11-06 14:04:02,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:02,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969107090] [2021-11-06 14:04:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:02,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:02,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:02,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969107090] [2021-11-06 14:04:02,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969107090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:02,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:02,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:04:02,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188253264] [2021-11-06 14:04:02,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:04:02,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:04:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:04:02,596 INFO L87 Difference]: Start difference. First operand 5685 states and 7939 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:03,102 INFO L93 Difference]: Finished difference Result 13355 states and 18527 transitions. [2021-11-06 14:04:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:04:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 87 [2021-11-06 14:04:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:03,130 INFO L225 Difference]: With dead ends: 13355 [2021-11-06 14:04:03,130 INFO L226 Difference]: Without dead ends: 7670 [2021-11-06 14:04:03,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:04:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7670 states. [2021-11-06 14:04:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7670 to 5685. [2021-11-06 14:04:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5048 states have (on average 1.3579635499207607) internal successors, (6855), 5188 states have internal predecessors, (6855), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7935 transitions. [2021-11-06 14:04:03,472 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7935 transitions. Word has length 87 [2021-11-06 14:04:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:03,473 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 7935 transitions. [2021-11-06 14:04:03,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7935 transitions. [2021-11-06 14:04:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 14:04:03,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:03,480 INFO L513 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] [2021-11-06 14:04:03,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:04:03,480 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)] === [2021-11-06 14:04:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1875368696, now seen corresponding path program 1 times [2021-11-06 14:04:03,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:03,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236318964] [2021-11-06 14:04:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:03,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:03,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:03,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236318964] [2021-11-06 14:04:03,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236318964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:03,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:03,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:04:03,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501669432] [2021-11-06 14:04:03,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:04:03,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:04:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:04:03,969 INFO L87 Difference]: Start difference. First operand 5685 states and 7935 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:11,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:11,179 INFO L93 Difference]: Finished difference Result 16742 states and 23071 transitions. [2021-11-06 14:04:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:04:11,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 89 [2021-11-06 14:04:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:11,221 INFO L225 Difference]: With dead ends: 16742 [2021-11-06 14:04:11,221 INFO L226 Difference]: Without dead ends: 11065 [2021-11-06 14:04:11,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:04:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-11-06 14:04:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 5705. [2021-11-06 14:04:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5068 states have (on average 1.35655090765588) internal successors, (6875), 5208 states have internal predecessors, (6875), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7955 transitions. [2021-11-06 14:04:11,652 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7955 transitions. Word has length 89 [2021-11-06 14:04:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:11,653 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7955 transitions. [2021-11-06 14:04:11,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7955 transitions. [2021-11-06 14:04:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 14:04:11,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:11,659 INFO L513 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] [2021-11-06 14:04:11,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 14:04:11,659 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)] === [2021-11-06 14:04:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 445986628, now seen corresponding path program 1 times [2021-11-06 14:04:11,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:11,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113054101] [2021-11-06 14:04:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:11,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:12,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:12,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113054101] [2021-11-06 14:04:12,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113054101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:12,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:12,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:04:12,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566550828] [2021-11-06 14:04:12,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:04:12,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:04:12,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:04:12,083 INFO L87 Difference]: Start difference. First operand 5705 states and 7955 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:12,436 INFO L93 Difference]: Finished difference Result 13519 states and 18715 transitions. [2021-11-06 14:04:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:04:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 91 [2021-11-06 14:04:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:12,465 INFO L225 Difference]: With dead ends: 13519 [2021-11-06 14:04:12,465 INFO L226 Difference]: Without dead ends: 7822 [2021-11-06 14:04:12,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:04:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-11-06 14:04:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 5709. [2021-11-06 14:04:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5709 states, 5072 states have (on average 1.3562697160883281) internal successors, (6879), 5212 states have internal predecessors, (6879), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 7959 transitions. [2021-11-06 14:04:12,793 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 7959 transitions. Word has length 91 [2021-11-06 14:04:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:12,793 INFO L470 AbstractCegarLoop]: Abstraction has 5709 states and 7959 transitions. [2021-11-06 14:04:12,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 7959 transitions. [2021-11-06 14:04:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 14:04:12,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:12,800 INFO L513 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] [2021-11-06 14:04:12,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 14:04:12,800 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -540204671, now seen corresponding path program 1 times [2021-11-06 14:04:12,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:12,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048736226] [2021-11-06 14:04:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:12,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:13,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:13,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048736226] [2021-11-06 14:04:13,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048736226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:13,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:13,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:04:13,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122286695] [2021-11-06 14:04:13,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:04:13,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:04:13,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:04:13,249 INFO L87 Difference]: Start difference. First operand 5709 states and 7959 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:14,889 INFO L93 Difference]: Finished difference Result 24657 states and 33563 transitions. [2021-11-06 14:04:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:04:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 14:04:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:14,944 INFO L225 Difference]: With dead ends: 24657 [2021-11-06 14:04:14,944 INFO L226 Difference]: Without dead ends: 18956 [2021-11-06 14:04:14,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:04:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2021-11-06 14:04:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 5721. [2021-11-06 14:04:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 5084 states have (on average 1.3554287962234461) internal successors, (6891), 5224 states have internal predecessors, (6891), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 7971 transitions. [2021-11-06 14:04:15,342 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 7971 transitions. Word has length 94 [2021-11-06 14:04:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:15,342 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 7971 transitions. [2021-11-06 14:04:15,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 7971 transitions. [2021-11-06 14:04:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 14:04:15,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:15,350 INFO L513 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] [2021-11-06 14:04:15,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 14:04:15,350 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2050509027, now seen corresponding path program 1 times [2021-11-06 14:04:15,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:15,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736737735] [2021-11-06 14:04:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:15,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:15,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:15,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736737735] [2021-11-06 14:04:15,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736737735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:15,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:15,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:04:15,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849989956] [2021-11-06 14:04:15,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:04:15,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:15,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:04:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:04:15,697 INFO L87 Difference]: Start difference. First operand 5721 states and 7971 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:17,593 INFO L93 Difference]: Finished difference Result 24745 states and 33699 transitions. [2021-11-06 14:04:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:04:17,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 96 [2021-11-06 14:04:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:17,657 INFO L225 Difference]: With dead ends: 24745 [2021-11-06 14:04:17,657 INFO L226 Difference]: Without dead ends: 19032 [2021-11-06 14:04:17,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:04:17,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19032 states. [2021-11-06 14:04:18,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19032 to 5729. [2021-11-06 14:04:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5729 states, 5092 states have (on average 1.3548703849175177) internal successors, (6899), 5232 states have internal predecessors, (6899), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5729 states to 5729 states and 7979 transitions. [2021-11-06 14:04:18,148 INFO L78 Accepts]: Start accepts. Automaton has 5729 states and 7979 transitions. Word has length 96 [2021-11-06 14:04:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:18,149 INFO L470 AbstractCegarLoop]: Abstraction has 5729 states and 7979 transitions. [2021-11-06 14:04:18,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5729 states and 7979 transitions. [2021-11-06 14:04:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 14:04:18,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:18,156 INFO L513 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] [2021-11-06 14:04:18,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 14:04:18,157 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1050932583, now seen corresponding path program 1 times [2021-11-06 14:04:18,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:18,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710443780] [2021-11-06 14:04:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:18,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:18,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:18,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710443780] [2021-11-06 14:04:18,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710443780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:18,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:18,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:04:18,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070164596] [2021-11-06 14:04:18,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:04:18,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:18,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:04:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:04:18,536 INFO L87 Difference]: Start difference. First operand 5729 states and 7979 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:19,546 INFO L93 Difference]: Finished difference Result 16981 states and 23295 transitions. [2021-11-06 14:04:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:04:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 98 [2021-11-06 14:04:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:19,590 INFO L225 Difference]: With dead ends: 16981 [2021-11-06 14:04:19,590 INFO L226 Difference]: Without dead ends: 11260 [2021-11-06 14:04:19,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:04:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2021-11-06 14:04:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 5857. [2021-11-06 14:04:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5220 states have (on average 1.3522988505747127) internal successors, (7059), 5360 states have internal predecessors, (7059), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8139 transitions. [2021-11-06 14:04:20,147 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8139 transitions. Word has length 98 [2021-11-06 14:04:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 8139 transitions. [2021-11-06 14:04:20,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8139 transitions. [2021-11-06 14:04:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 14:04:20,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:20,156 INFO L513 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] [2021-11-06 14:04:20,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 14:04:20,156 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2052678435, now seen corresponding path program 1 times [2021-11-06 14:04:20,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:20,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264698926] [2021-11-06 14:04:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:20,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:20,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:20,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264698926] [2021-11-06 14:04:20,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264698926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:20,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:20,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 14:04:20,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390094791] [2021-11-06 14:04:20,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:04:20,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:04:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:04:20,975 INFO L87 Difference]: Start difference. First operand 5857 states and 8139 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:30,268 INFO L93 Difference]: Finished difference Result 22056 states and 29916 transitions. [2021-11-06 14:04:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-06 14:04:30,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 100 [2021-11-06 14:04:30,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:30,318 INFO L225 Difference]: With dead ends: 22056 [2021-11-06 14:04:30,318 INFO L226 Difference]: Without dead ends: 16207 [2021-11-06 14:04:30,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=627, Invalid=2343, Unknown=0, NotChecked=0, Total=2970 [2021-11-06 14:04:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2021-11-06 14:04:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 5857. [2021-11-06 14:04:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5220 states have (on average 1.3519157088122606) internal successors, (7057), 5360 states have internal predecessors, (7057), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8137 transitions. [2021-11-06 14:04:31,030 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8137 transitions. Word has length 100 [2021-11-06 14:04:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:31,031 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 8137 transitions. [2021-11-06 14:04:31,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8137 transitions. [2021-11-06 14:04:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 14:04:31,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:31,042 INFO L513 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] [2021-11-06 14:04:31,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 14:04:31,042 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:31,043 INFO L85 PathProgramCache]: Analyzing trace with hash -262262845, now seen corresponding path program 1 times [2021-11-06 14:04:31,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:31,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108775320] [2021-11-06 14:04:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:31,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:31,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:31,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108775320] [2021-11-06 14:04:31,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108775320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:31,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:31,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:04:31,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455243577] [2021-11-06 14:04:31,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:04:31,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:04:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:04:31,515 INFO L87 Difference]: Start difference. First operand 5857 states and 8137 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:33,450 INFO L93 Difference]: Finished difference Result 18539 states and 25266 transitions. [2021-11-06 14:04:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:04:33,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 116 [2021-11-06 14:04:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:33,491 INFO L225 Difference]: With dead ends: 18539 [2021-11-06 14:04:33,492 INFO L226 Difference]: Without dead ends: 12690 [2021-11-06 14:04:33,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-06 14:04:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12690 states. [2021-11-06 14:04:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12690 to 5793. [2021-11-06 14:04:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5156 states have (on average 1.3527928626842514) internal successors, (6975), 5296 states have internal predecessors, (6975), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8055 transitions. [2021-11-06 14:04:34,094 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8055 transitions. Word has length 116 [2021-11-06 14:04:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:34,094 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8055 transitions. [2021-11-06 14:04:34,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8055 transitions. [2021-11-06 14:04:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 14:04:34,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:34,104 INFO L513 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] [2021-11-06 14:04:34,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 14:04:34,104 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:34,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash 852425825, now seen corresponding path program 1 times [2021-11-06 14:04:34,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:34,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915772422] [2021-11-06 14:04:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:34,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:35,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:35,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915772422] [2021-11-06 14:04:35,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915772422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:35,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:35,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 14:04:35,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072848831] [2021-11-06 14:04:35,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:04:35,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:04:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:04:35,115 INFO L87 Difference]: Start difference. First operand 5793 states and 8055 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:47,400 INFO L93 Difference]: Finished difference Result 27160 states and 36660 transitions. [2021-11-06 14:04:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-06 14:04:47,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 116 [2021-11-06 14:04:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:47,449 INFO L225 Difference]: With dead ends: 27160 [2021-11-06 14:04:47,449 INFO L226 Difference]: Without dead ends: 21375 [2021-11-06 14:04:47,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-06 14:04:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21375 states. [2021-11-06 14:04:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21375 to 5793. [2021-11-06 14:04:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5156 states have (on average 1.3524049650892165) internal successors, (6973), 5296 states have internal predecessors, (6973), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8053 transitions. [2021-11-06 14:04:48,103 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8053 transitions. Word has length 116 [2021-11-06 14:04:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:48,103 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8053 transitions. [2021-11-06 14:04:48,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8053 transitions. [2021-11-06 14:04:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 14:04:48,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:48,113 INFO L513 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] [2021-11-06 14:04:48,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 14:04:48,114 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 143688362, now seen corresponding path program 1 times [2021-11-06 14:04:48,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:48,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730186718] [2021-11-06 14:04:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:48,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:48,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:48,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730186718] [2021-11-06 14:04:48,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730186718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:48,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:48,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:04:48,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205836679] [2021-11-06 14:04:48,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:04:48,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:04:48,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:04:48,329 INFO L87 Difference]: Start difference. First operand 5793 states and 8053 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:53,237 INFO L93 Difference]: Finished difference Result 12418 states and 17213 transitions. [2021-11-06 14:04:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:04:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 14:04:53,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:53,273 INFO L225 Difference]: With dead ends: 12418 [2021-11-06 14:04:53,273 INFO L226 Difference]: Without dead ends: 6633 [2021-11-06 14:04:53,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:04:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-11-06 14:04:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5841. [2021-11-06 14:04:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5841 states, 5204 states have (on average 1.3491544965411222) internal successors, (7021), 5344 states have internal predecessors, (7021), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8101 transitions. [2021-11-06 14:04:53,774 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 8101 transitions. Word has length 118 [2021-11-06 14:04:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:53,775 INFO L470 AbstractCegarLoop]: Abstraction has 5841 states and 8101 transitions. [2021-11-06 14:04:53,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 8101 transitions. [2021-11-06 14:04:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 14:04:53,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:53,786 INFO L513 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] [2021-11-06 14:04:53,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 14:04:53,786 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1159778289, now seen corresponding path program 1 times [2021-11-06 14:04:53,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:53,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163532056] [2021-11-06 14:04:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:53,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:54,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:54,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163532056] [2021-11-06 14:04:54,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163532056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:54,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:04:54,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:04:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511882365] [2021-11-06 14:04:54,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:04:54,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:04:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:04:54,009 INFO L87 Difference]: Start difference. First operand 5841 states and 8101 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:55,062 INFO L93 Difference]: Finished difference Result 13829 states and 19031 transitions. [2021-11-06 14:04:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:04:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 121 [2021-11-06 14:04:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:55,087 INFO L225 Difference]: With dead ends: 13829 [2021-11-06 14:04:55,088 INFO L226 Difference]: Without dead ends: 7996 [2021-11-06 14:04:55,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:04:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-11-06 14:04:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 5845. [2021-11-06 14:04:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5208 states have (on average 1.3488863287250383) internal successors, (7025), 5348 states have internal predecessors, (7025), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8105 transitions. [2021-11-06 14:04:55,607 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8105 transitions. Word has length 121 [2021-11-06 14:04:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:55,607 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 8105 transitions. [2021-11-06 14:04:55,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:55,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8105 transitions. [2021-11-06 14:04:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 14:04:55,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:55,619 INFO L513 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] [2021-11-06 14:04:55,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 14:04:55,619 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash -76519722, now seen corresponding path program 1 times [2021-11-06 14:04:55,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:55,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797000955] [2021-11-06 14:04:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:55,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:04:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:04:55,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:04:55,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797000955] [2021-11-06 14:04:55,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797000955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:04:55,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242053875] [2021-11-06 14:04:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:55,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:04:55,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:04:55,841 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) [2021-11-06 14:04:55,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:04:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:04:57,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 4199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 14:04:57,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:04:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:04:57,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242053875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:04:57,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:04:57,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 14:04:57,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226623464] [2021-11-06 14:04:57,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:04:57,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:04:57,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:04:57,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:04:57,362 INFO L87 Difference]: Start difference. First operand 5845 states and 8105 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:04:58,026 INFO L93 Difference]: Finished difference Result 12583 states and 17405 transitions. [2021-11-06 14:04:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:04:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-06 14:04:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:04:58,044 INFO L225 Difference]: With dead ends: 12583 [2021-11-06 14:04:58,044 INFO L226 Difference]: Without dead ends: 6746 [2021-11-06 14:04:58,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:04:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-11-06 14:04:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 5747. [2021-11-06 14:04:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5110 states have (on average 1.34853228962818) internal successors, (6891), 5250 states have internal predecessors, (6891), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-06 14:04:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 7971 transitions. [2021-11-06 14:04:58,525 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 7971 transitions. Word has length 122 [2021-11-06 14:04:58,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:04:58,526 INFO L470 AbstractCegarLoop]: Abstraction has 5747 states and 7971 transitions. [2021-11-06 14:04:58,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:04:58,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 7971 transitions. [2021-11-06 14:04:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 14:04:58,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:04:58,532 INFO L513 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] [2021-11-06 14:04:58,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:04:58,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-06 14:04:58,760 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:04:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:04:58,760 INFO L85 PathProgramCache]: Analyzing trace with hash 851412063, now seen corresponding path program 1 times [2021-11-06 14:04:58,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:04:58,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286499911] [2021-11-06 14:04:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:04:58,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:05:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:05:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:05:04,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:05:04,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286499911] [2021-11-06 14:05:04,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286499911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:05:04,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:05:04,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 14:05:04,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416743066] [2021-11-06 14:05:04,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 14:05:04,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:05:04,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 14:05:04,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 14:05:04,047 INFO L87 Difference]: Start difference. First operand 5747 states and 7971 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:00,400 INFO L93 Difference]: Finished difference Result 20946 states and 28726 transitions. [2021-11-06 14:06:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-06 14:06:00,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 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 124 [2021-11-06 14:06:00,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:00,461 INFO L225 Difference]: With dead ends: 20946 [2021-11-06 14:06:00,461 INFO L226 Difference]: Without dead ends: 15153 [2021-11-06 14:06:00,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3032 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1571, Invalid=6261, Unknown=0, NotChecked=0, Total=7832 [2021-11-06 14:06:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2021-11-06 14:06:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 7688. [2021-11-06 14:06:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 6739 states have (on average 1.3515358361774743) internal successors, (9108), 6947 states have internal predecessors, (9108), 642 states have call successors, (642), 306 states have call predecessors, (642), 306 states have return successors, (858), 516 states have call predecessors, (858), 642 states have call successors, (858) [2021-11-06 14:06:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 10608 transitions. [2021-11-06 14:06:01,437 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 10608 transitions. Word has length 124 [2021-11-06 14:06:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:01,437 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 10608 transitions. [2021-11-06 14:06:01,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 10608 transitions. [2021-11-06 14:06:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 14:06:01,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:01,446 INFO L513 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] [2021-11-06 14:06:01,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 14:06:01,447 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:06:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash -325152332, now seen corresponding path program 1 times [2021-11-06 14:06:01,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:01,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192629560] [2021-11-06 14:06:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:01,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:06:01,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:01,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192629560] [2021-11-06 14:06:01,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192629560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:01,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:01,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 14:06:01,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030178366] [2021-11-06 14:06:01,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:06:01,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:06:01,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:06:01,887 INFO L87 Difference]: Start difference. First operand 7688 states and 10608 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:04,092 INFO L93 Difference]: Finished difference Result 20957 states and 28569 transitions. [2021-11-06 14:06:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 14:06:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 146 [2021-11-06 14:06:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:04,132 INFO L225 Difference]: With dead ends: 20957 [2021-11-06 14:06:04,133 INFO L226 Difference]: Without dead ends: 13277 [2021-11-06 14:06:04,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:06:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2021-11-06 14:06:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 7696. [2021-11-06 14:06:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7696 states, 6747 states have (on average 1.3511190158589002) internal successors, (9116), 6955 states have internal predecessors, (9116), 642 states have call successors, (642), 306 states have call predecessors, (642), 306 states have return successors, (858), 516 states have call predecessors, (858), 642 states have call successors, (858) [2021-11-06 14:06:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7696 states to 7696 states and 10616 transitions. [2021-11-06 14:06:04,916 INFO L78 Accepts]: Start accepts. Automaton has 7696 states and 10616 transitions. Word has length 146 [2021-11-06 14:06:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:04,917 INFO L470 AbstractCegarLoop]: Abstraction has 7696 states and 10616 transitions. [2021-11-06 14:06:04,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7696 states and 10616 transitions. [2021-11-06 14:06:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 14:06:04,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:04,925 INFO L513 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] [2021-11-06 14:06:04,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 14:06:04,925 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:06:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash -572329288, now seen corresponding path program 1 times [2021-11-06 14:06:04,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:04,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638913195] [2021-11-06 14:06:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:04,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:06:18,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:18,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638913195] [2021-11-06 14:06:18,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638913195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:18,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:18,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-06 14:06:18,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861013893] [2021-11-06 14:06:18,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-06 14:06:18,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-06 14:06:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-11-06 14:06:18,272 INFO L87 Difference]: Start difference. First operand 7696 states and 10616 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:07:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:07:34,581 INFO L93 Difference]: Finished difference Result 32922 states and 45079 transitions. [2021-11-06 14:07:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-11-06 14:07:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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 148 [2021-11-06 14:07:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:07:34,673 INFO L225 Difference]: With dead ends: 32922 [2021-11-06 14:07:34,674 INFO L226 Difference]: Without dead ends: 25146 [2021-11-06 14:07:34,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10671 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4753, Invalid=21329, Unknown=0, NotChecked=0, Total=26082 [2021-11-06 14:07:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25146 states. [2021-11-06 14:07:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25146 to 11820. [2021-11-06 14:07:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11820 states, 10243 states have (on average 1.3548765010250903) internal successors, (13878), 10587 states have internal predecessors, (13878), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-06 14:07:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11820 states to 11820 states and 16226 transitions. [2021-11-06 14:07:36,026 INFO L78 Accepts]: Start accepts. Automaton has 11820 states and 16226 transitions. Word has length 148 [2021-11-06 14:07:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:07:36,026 INFO L470 AbstractCegarLoop]: Abstraction has 11820 states and 16226 transitions. [2021-11-06 14:07:36,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:07:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 11820 states and 16226 transitions. [2021-11-06 14:07:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 14:07:36,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:07:36,035 INFO L513 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] [2021-11-06 14:07:36,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 14:07:36,035 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:07:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:07:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1703838082, now seen corresponding path program 1 times [2021-11-06 14:07:36,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:07:36,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167581183] [2021-11-06 14:07:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:07:36,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:07:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:07:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:07:50,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:07:50,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167581183] [2021-11-06 14:07:50,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167581183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:07:50,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:07:50,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-06 14:07:50,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588614115] [2021-11-06 14:07:50,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-06 14:07:50,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:07:50,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-06 14:07:50,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-06 14:07:50,372 INFO L87 Difference]: Start difference. First operand 11820 states and 16226 transitions. Second operand has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:09:29,861 INFO L93 Difference]: Finished difference Result 42821 states and 58622 transitions. [2021-11-06 14:09:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-11-06 14:09:29,863 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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 151 [2021-11-06 14:09:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:09:29,946 INFO L225 Difference]: With dead ends: 42821 [2021-11-06 14:09:29,947 INFO L226 Difference]: Without dead ends: 30945 [2021-11-06 14:09:29,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9708 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=4936, Invalid=21146, Unknown=0, NotChecked=0, Total=26082 [2021-11-06 14:09:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30945 states. [2021-11-06 14:09:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30945 to 13957. [2021-11-06 14:09:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13957 states, 12068 states have (on average 1.3567285382830627) internal successors, (16373), 12480 states have internal predecessors, (16373), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:09:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13957 states to 13957 states and 19141 transitions. [2021-11-06 14:09:31,537 INFO L78 Accepts]: Start accepts. Automaton has 13957 states and 19141 transitions. Word has length 151 [2021-11-06 14:09:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:09:31,538 INFO L470 AbstractCegarLoop]: Abstraction has 13957 states and 19141 transitions. [2021-11-06 14:09:31,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13957 states and 19141 transitions. [2021-11-06 14:09:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 14:09:31,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:09:31,547 INFO L513 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] [2021-11-06 14:09:31,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 14:09:31,547 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:09:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:09:31,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1732425486, now seen corresponding path program 1 times [2021-11-06 14:09:31,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:09:31,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213843852] [2021-11-06 14:09:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:31,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:09:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:09:31,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:09:31,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213843852] [2021-11-06 14:09:31,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213843852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:09:31,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:09:31,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:09:31,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893969964] [2021-11-06 14:09:31,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:09:31,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:09:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:09:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:09:31,764 INFO L87 Difference]: Start difference. First operand 13957 states and 19141 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:09:33,795 INFO L93 Difference]: Finished difference Result 28823 states and 39329 transitions. [2021-11-06 14:09:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:09:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 158 [2021-11-06 14:09:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:09:33,844 INFO L225 Difference]: With dead ends: 28823 [2021-11-06 14:09:33,844 INFO L226 Difference]: Without dead ends: 16791 [2021-11-06 14:09:33,870 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:09:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2021-11-06 14:09:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 13961. [2021-11-06 14:09:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13961 states, 12072 states have (on average 1.3562789927104042) internal successors, (16373), 12484 states have internal predecessors, (16373), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:09:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13961 states to 13961 states and 19141 transitions. [2021-11-06 14:09:35,134 INFO L78 Accepts]: Start accepts. Automaton has 13961 states and 19141 transitions. Word has length 158 [2021-11-06 14:09:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:09:35,135 INFO L470 AbstractCegarLoop]: Abstraction has 13961 states and 19141 transitions. [2021-11-06 14:09:35,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13961 states and 19141 transitions. [2021-11-06 14:09:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 14:09:35,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:09:35,145 INFO L513 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, 1, 1] [2021-11-06 14:09:35,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 14:09:35,145 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:09:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:09:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1594391245, now seen corresponding path program 1 times [2021-11-06 14:09:35,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:09:35,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743688960] [2021-11-06 14:09:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:35,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:09:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:09:35,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:09:35,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743688960] [2021-11-06 14:09:35,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743688960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:09:35,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056619301] [2021-11-06 14:09:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:35,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:09:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:09:35,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:09:35,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:09:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:36,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 4756 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:09:36,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:09:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:09:37,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056619301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:09:37,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:09:37,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:09:37,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943521290] [2021-11-06 14:09:37,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:09:37,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:09:37,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:09:37,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:09:37,037 INFO L87 Difference]: Start difference. First operand 13961 states and 19141 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:09:43,006 INFO L93 Difference]: Finished difference Result 26773 states and 36690 transitions. [2021-11-06 14:09:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:09:43,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 168 [2021-11-06 14:09:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:09:43,050 INFO L225 Difference]: With dead ends: 26773 [2021-11-06 14:09:43,051 INFO L226 Difference]: Without dead ends: 14737 [2021-11-06 14:09:43,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:09:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2021-11-06 14:09:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 14715. [2021-11-06 14:09:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14715 states, 12826 states have (on average 1.351707469203181) internal successors, (17337), 13238 states have internal predecessors, (17337), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:09:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14715 states to 14715 states and 20105 transitions. [2021-11-06 14:09:44,473 INFO L78 Accepts]: Start accepts. Automaton has 14715 states and 20105 transitions. Word has length 168 [2021-11-06 14:09:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:09:44,474 INFO L470 AbstractCegarLoop]: Abstraction has 14715 states and 20105 transitions. [2021-11-06 14:09:44,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 14715 states and 20105 transitions. [2021-11-06 14:09:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-06 14:09:44,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:09:44,485 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:09:44,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:09:44,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-06 14:09:44,687 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:09:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:09:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash -417753735, now seen corresponding path program 2 times [2021-11-06 14:09:44,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:09:44,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855408794] [2021-11-06 14:09:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:44,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:09:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:09:45,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:09:45,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855408794] [2021-11-06 14:09:45,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855408794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:09:45,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:09:45,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:09:45,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520784373] [2021-11-06 14:09:45,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:09:45,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:09:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:09:45,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:09:45,030 INFO L87 Difference]: Start difference. First operand 14715 states and 20105 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:09:47,358 INFO L93 Difference]: Finished difference Result 31139 states and 42313 transitions. [2021-11-06 14:09:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:09:47,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 172 [2021-11-06 14:09:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:09:47,402 INFO L225 Difference]: With dead ends: 31139 [2021-11-06 14:09:47,403 INFO L226 Difference]: Without dead ends: 18349 [2021-11-06 14:09:47,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:09:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2021-11-06 14:09:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 14721. [2021-11-06 14:09:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12832 states have (on average 1.3515430174563592) internal successors, (17343), 13244 states have internal predecessors, (17343), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:09:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 20111 transitions. [2021-11-06 14:09:48,882 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 20111 transitions. Word has length 172 [2021-11-06 14:09:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:09:48,882 INFO L470 AbstractCegarLoop]: Abstraction has 14721 states and 20111 transitions. [2021-11-06 14:09:48,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 20111 transitions. [2021-11-06 14:09:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-06 14:09:48,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:09:48,897 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:09:48,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 14:09:48,897 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:09:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:09:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 63707790, now seen corresponding path program 1 times [2021-11-06 14:09:48,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:09:48,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810037682] [2021-11-06 14:09:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:48,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:09:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:09:49,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:09:49,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810037682] [2021-11-06 14:09:49,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810037682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:09:49,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:09:49,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:09:49,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615765838] [2021-11-06 14:09:49,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:09:49,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:09:49,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:09:49,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:09:49,244 INFO L87 Difference]: Start difference. First operand 14721 states and 20111 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:09:56,117 INFO L93 Difference]: Finished difference Result 47028 states and 63174 transitions. [2021-11-06 14:09:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:09:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 175 [2021-11-06 14:09:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:09:56,305 INFO L225 Difference]: With dead ends: 47028 [2021-11-06 14:09:56,305 INFO L226 Difference]: Without dead ends: 34232 [2021-11-06 14:09:56,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:09:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34232 states. [2021-11-06 14:09:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34232 to 14739. [2021-11-06 14:09:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14739 states, 12850 states have (on average 1.3510505836575875) internal successors, (17361), 13262 states have internal predecessors, (17361), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:09:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14739 states to 14739 states and 20129 transitions. [2021-11-06 14:09:58,096 INFO L78 Accepts]: Start accepts. Automaton has 14739 states and 20129 transitions. Word has length 175 [2021-11-06 14:09:58,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:09:58,097 INFO L470 AbstractCegarLoop]: Abstraction has 14739 states and 20129 transitions. [2021-11-06 14:09:58,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:09:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14739 states and 20129 transitions. [2021-11-06 14:09:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-06 14:09:58,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:09:58,113 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:09:58,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 14:09:58,114 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:09:58,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:09:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash 496091690, now seen corresponding path program 1 times [2021-11-06 14:09:58,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:09:58,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807912235] [2021-11-06 14:09:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:58,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:09:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:09:58,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:09:58,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807912235] [2021-11-06 14:09:58,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807912235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:09:58,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:09:58,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:09:58,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645309516] [2021-11-06 14:09:58,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:09:58,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:09:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:09:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:09:58,447 INFO L87 Difference]: Start difference. First operand 14739 states and 20129 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:06,337 INFO L93 Difference]: Finished difference Result 47248 states and 63462 transitions. [2021-11-06 14:10:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:10:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 177 [2021-11-06 14:10:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:06,415 INFO L225 Difference]: With dead ends: 47248 [2021-11-06 14:10:06,415 INFO L226 Difference]: Without dead ends: 34434 [2021-11-06 14:10:06,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:10:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34434 states. [2021-11-06 14:10:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34434 to 14751. [2021-11-06 14:10:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14751 states, 12862 states have (on average 1.3507230601772664) internal successors, (17373), 13274 states have internal predecessors, (17373), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:10:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14751 states to 14751 states and 20141 transitions. [2021-11-06 14:10:08,509 INFO L78 Accepts]: Start accepts. Automaton has 14751 states and 20141 transitions. Word has length 177 [2021-11-06 14:10:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:08,509 INFO L470 AbstractCegarLoop]: Abstraction has 14751 states and 20141 transitions. [2021-11-06 14:10:08,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14751 states and 20141 transitions. [2021-11-06 14:10:08,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 14:10:08,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:08,522 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:08,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 14:10:08,522 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:08,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1425931458, now seen corresponding path program 1 times [2021-11-06 14:10:08,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:08,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25284475] [2021-11-06 14:10:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:08,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:10:08,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:08,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25284475] [2021-11-06 14:10:08,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25284475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:10:08,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402964020] [2021-11-06 14:10:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:08,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:10:08,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:10:08,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:10:08,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 14:10:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:10,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 4795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 14:10:10,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:10:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:10:10,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402964020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:10,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:10:10,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:10:10,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593981753] [2021-11-06 14:10:10,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:10,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:10:10,392 INFO L87 Difference]: Start difference. First operand 14751 states and 20141 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:12,294 INFO L93 Difference]: Finished difference Result 27761 states and 37880 transitions. [2021-11-06 14:10:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 178 [2021-11-06 14:10:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:12,341 INFO L225 Difference]: With dead ends: 27761 [2021-11-06 14:10:12,341 INFO L226 Difference]: Without dead ends: 14935 [2021-11-06 14:10:12,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:10:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14935 states. [2021-11-06 14:10:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14935 to 14539. [2021-11-06 14:10:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14539 states, 12650 states have (on average 1.3483794466403163) internal successors, (17057), 13062 states have internal predecessors, (17057), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:10:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14539 states to 14539 states and 19825 transitions. [2021-11-06 14:10:13,800 INFO L78 Accepts]: Start accepts. Automaton has 14539 states and 19825 transitions. Word has length 178 [2021-11-06 14:10:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:13,800 INFO L470 AbstractCegarLoop]: Abstraction has 14539 states and 19825 transitions. [2021-11-06 14:10:13,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 14539 states and 19825 transitions. [2021-11-06 14:10:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-06 14:10:13,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:13,814 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:13,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 14:10:14,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:10:14,014 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:14,015 INFO L85 PathProgramCache]: Analyzing trace with hash 455757734, now seen corresponding path program 1 times [2021-11-06 14:10:14,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:14,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728561802] [2021-11-06 14:10:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:14,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:10:14,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:14,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728561802] [2021-11-06 14:10:14,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728561802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:14,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:14,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 14:10:14,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407799326] [2021-11-06 14:10:14,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:10:14,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:14,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:10:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:10:14,973 INFO L87 Difference]: Start difference. First operand 14539 states and 19825 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:28,883 INFO L93 Difference]: Finished difference Result 36835 states and 49535 transitions. [2021-11-06 14:10:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-06 14:10:28,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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 179 [2021-11-06 14:10:28,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:28,948 INFO L225 Difference]: With dead ends: 36835 [2021-11-06 14:10:28,948 INFO L226 Difference]: Without dead ends: 24221 [2021-11-06 14:10:28,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=516, Invalid=1836, Unknown=0, NotChecked=0, Total=2352 [2021-11-06 14:10:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24221 states. [2021-11-06 14:10:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24221 to 14539. [2021-11-06 14:10:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14539 states, 12650 states have (on average 1.346482213438735) internal successors, (17033), 13062 states have internal predecessors, (17033), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:10:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14539 states to 14539 states and 19801 transitions. [2021-11-06 14:10:30,651 INFO L78 Accepts]: Start accepts. Automaton has 14539 states and 19801 transitions. Word has length 179 [2021-11-06 14:10:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:30,652 INFO L470 AbstractCegarLoop]: Abstraction has 14539 states and 19801 transitions. [2021-11-06 14:10:30,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14539 states and 19801 transitions. [2021-11-06 14:10:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-06 14:10:30,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:30,665 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:30,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 14:10:30,666 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:30,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1348380585, now seen corresponding path program 1 times [2021-11-06 14:10:30,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:30,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300641699] [2021-11-06 14:10:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:30,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:10:30,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:30,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300641699] [2021-11-06 14:10:30,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300641699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:10:30,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13281235] [2021-11-06 14:10:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:30,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:10:30,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:10:30,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:10:30,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 14:10:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:32,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 4851 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 14:10:32,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:10:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:10:32,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13281235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:32,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:10:32,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-06 14:10:32,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574926767] [2021-11-06 14:10:32,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:10:32,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:10:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:10:32,572 INFO L87 Difference]: Start difference. First operand 14539 states and 19801 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:34,651 INFO L93 Difference]: Finished difference Result 28889 states and 39224 transitions. [2021-11-06 14:10:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:10:34,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-06 14:10:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:34,692 INFO L225 Difference]: With dead ends: 28889 [2021-11-06 14:10:34,692 INFO L226 Difference]: Without dead ends: 16275 [2021-11-06 14:10:34,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:10:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16275 states. [2021-11-06 14:10:36,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16275 to 14545. [2021-11-06 14:10:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14545 states, 12656 states have (on average 1.3460018963337548) internal successors, (17035), 13068 states have internal predecessors, (17035), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:10:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14545 states to 14545 states and 19803 transitions. [2021-11-06 14:10:36,278 INFO L78 Accepts]: Start accepts. Automaton has 14545 states and 19803 transitions. Word has length 184 [2021-11-06 14:10:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:36,278 INFO L470 AbstractCegarLoop]: Abstraction has 14545 states and 19803 transitions. [2021-11-06 14:10:36,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 14545 states and 19803 transitions. [2021-11-06 14:10:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-06 14:10:36,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:36,294 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:36,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 14:10:36,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-06 14:10:36,512 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:36,512 INFO L85 PathProgramCache]: Analyzing trace with hash 98537875, now seen corresponding path program 1 times [2021-11-06 14:10:36,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:36,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198881282] [2021-11-06 14:10:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:36,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:10:48,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:48,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198881282] [2021-11-06 14:10:48,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198881282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:48,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:48,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 14:10:48,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136137080] [2021-11-06 14:10:48,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 14:10:48,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:48,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 14:10:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-06 14:10:48,885 INFO L87 Difference]: Start difference. First operand 14545 states and 19803 transitions. Second operand has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:12:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:12:35,254 INFO L93 Difference]: Finished difference Result 30855 states and 41703 transitions. [2021-11-06 14:12:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-06 14:12:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-06 14:12:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:12:35,302 INFO L225 Difference]: With dead ends: 30855 [2021-11-06 14:12:35,302 INFO L226 Difference]: Without dead ends: 18235 [2021-11-06 14:12:35,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 14:12:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18235 states. [2021-11-06 14:12:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18235 to 14703. [2021-11-06 14:12:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14703 states, 12814 states have (on average 1.3432963945684409) internal successors, (17213), 13226 states have internal predecessors, (17213), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-06 14:12:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14703 states to 14703 states and 19981 transitions. [2021-11-06 14:12:37,084 INFO L78 Accepts]: Start accepts. Automaton has 14703 states and 19981 transitions. Word has length 184 [2021-11-06 14:12:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:12:37,084 INFO L470 AbstractCegarLoop]: Abstraction has 14703 states and 19981 transitions. [2021-11-06 14:12:37,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:12:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14703 states and 19981 transitions. [2021-11-06 14:12:37,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-06 14:12:37,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:12:37,096 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:12:37,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 14:12:37,097 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:12:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:12:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash 387159323, now seen corresponding path program 1 times [2021-11-06 14:12:37,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:12:37,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049378531] [2021-11-06 14:12:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:37,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:12:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:12:56,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:12:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049378531] [2021-11-06 14:12:56,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049378531] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:12:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388681796] [2021-11-06 14:12:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:56,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:12:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:12:56,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:12:56,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15