./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--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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--media--rc--imon.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 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:43:32,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:43:32,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:43:32,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:43:32,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:43:32,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:43:32,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:43:32,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:43:32,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:43:32,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:43:32,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:43:32,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:43:32,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:43:32,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:43:32,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:43:32,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:43:32,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:43:32,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:43:32,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:43:32,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:43:32,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:43:32,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:43:32,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:43:32,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:43:32,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:43:32,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:43:32,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:43:32,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:43:32,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:43:32,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:43:32,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:43:32,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:43:32,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:43:32,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:43:32,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:43:32,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:43:32,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:43:32,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:43:32,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:43:32,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:43:32,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:43:32,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:43:33,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:43:33,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:43:33,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:43:33,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:43:33,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:43:33,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:43:33,025 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:43:33,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:43:33,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:43:33,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:43:33,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:43:33,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:43:33,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:43:33,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:43:33,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:43:33,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:43:33,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:43:33,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:43:33,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:43:33,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:43:33,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:43:33,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:43:33,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:43:33,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2021-11-07 12:43:33,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:43:33,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:43:33,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:43:33,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:43:33,314 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:43:33,315 INFO L432 ainManager$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--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 12:43:33,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05bddd952/61d75647d86446129e74b9b5ff60bdae/FLAG703e246aa [2021-11-07 12:43:34,049 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:43:34,050 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--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 12:43:34,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05bddd952/61d75647d86446129e74b9b5ff60bdae/FLAG703e246aa [2021-11-07 12:43:34,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05bddd952/61d75647d86446129e74b9b5ff60bdae [2021-11-07 12:43:34,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:43:34,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:43:34,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:43:34,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:43:34,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:43:34,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:34" (1/1) ... [2021-11-07 12:43:34,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d10600d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:34, skipping insertion in model container [2021-11-07 12:43:34,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:34" (1/1) ... [2021-11-07 12:43:34,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:43:34,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:43:35,039 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-07 12:43:35,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:43:35,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:43:35,823 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-07 12:43:35,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:43:36,056 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:43:36,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36 WrapperNode [2021-11-07 12:43:36,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:43:36,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:43:36,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:43:36,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:43:36,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:43:36,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:43:36,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:43:36,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:43:36,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:36,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:37,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:43:37,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:43:37,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:43:37,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:43:37,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (1/1) ... [2021-11-07 12:43:37,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:43:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:43:37,129 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) [2021-11-07 12:43:37,186 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 [2021-11-07 12:43:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 12:43:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:43:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:43:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 12:43:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 12:43:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:43:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-07 12:43:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-07 12:43:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:43:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-07 12:43:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-07 12:43:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:43:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:43:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2021-11-07 12:43:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2021-11-07 12:43:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2021-11-07 12:43:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2021-11-07 12:43:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:43:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:43:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:43:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:43:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:43:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:43:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 12:43:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:43:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:43:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:43:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:43:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:44:54,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:44:54,172 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2021-11-07 12:44:54,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:54 BoogieIcfgContainer [2021-11-07 12:44:54,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:44:54,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:44:54,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:44:54,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:44:54,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:43:34" (1/3) ... [2021-11-07 12:44:54,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd58dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:54, skipping insertion in model container [2021-11-07 12:44:54,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:36" (2/3) ... [2021-11-07 12:44:54,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd58dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:54, skipping insertion in model container [2021-11-07 12:44:54,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:54" (3/3) ... [2021-11-07 12:44:54,182 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 12:44:54,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:44:54,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 12:44:54,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:44:54,232 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 [2021-11-07 12:44:54,233 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 12:44:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 2464 states, 2431 states have (on average 1.4619498148909913) internal successors, (3554), 2438 states have internal predecessors, (3554), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-07 12:44:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 12:44:54,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:54,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:54,298 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)] === [2021-11-07 12:44:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash 351109344, now seen corresponding path program 1 times [2021-11-07 12:44:54,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328855429] [2021-11-07 12:44:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:54,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:44:54,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:54,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328855429] [2021-11-07 12:44:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328855429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:54,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:54,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:44:54,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082423534] [2021-11-07 12:44:54,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:54,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:44:54,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:44:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:54,958 INFO L87 Difference]: Start difference. First operand has 2464 states, 2431 states have (on average 1.4619498148909913) internal successors, (3554), 2438 states have internal predecessors, (3554), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:57,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:44:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:57,383 INFO L93 Difference]: Finished difference Result 7262 states and 10613 transitions. [2021-11-07 12:44:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:44:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-07 12:44:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:57,422 INFO L225 Difference]: With dead ends: 7262 [2021-11-07 12:44:57,423 INFO L226 Difference]: Without dead ends: 4777 [2021-11-07 12:44:57,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:57,439 INFO L933 BasicCegarLoop]: 3563 mSDtfsCounter, 3402 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2137.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 7085 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2227.89ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:57,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3402 Valid, 7085 Invalid, 15 Unknown, 0 Unchecked, 21.67ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2227.89ms Time] [2021-11-07 12:44:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2021-11-07 12:44:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4777. [2021-11-07 12:44:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4718 states have (on average 1.443408223823654) internal successors, (6810), 4726 states have internal predecessors, (6810), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-07 12:44:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 6894 transitions. [2021-11-07 12:44:57,642 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 6894 transitions. Word has length 35 [2021-11-07 12:44:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:57,643 INFO L470 AbstractCegarLoop]: Abstraction has 4777 states and 6894 transitions. [2021-11-07 12:44:57,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 6894 transitions. [2021-11-07 12:44:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 12:44:57,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:57,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:57,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:44:57,650 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)] === [2021-11-07 12:44:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1121474417, now seen corresponding path program 1 times [2021-11-07 12:44:57,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:57,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825795490] [2021-11-07 12:44:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:57,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:44:58,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:58,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825795490] [2021-11-07 12:44:58,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825795490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:58,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:58,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:44:58,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386903971] [2021-11-07 12:44:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:58,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:44:58,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:58,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:44:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:58,232 INFO L87 Difference]: Start difference. First operand 4777 states and 6894 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:58,630 INFO L93 Difference]: Finished difference Result 14229 states and 20687 transitions. [2021-11-07 12:44:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:44:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 12:44:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:58,669 INFO L225 Difference]: With dead ends: 14229 [2021-11-07 12:44:58,669 INFO L226 Difference]: Without dead ends: 9502 [2021-11-07 12:44:58,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:58,684 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 3484 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.11ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.52ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:58,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3484 Valid, 6916 Invalid, 116 Unknown, 0 Unchecked, 15.11ms Time], IncrementalHoareTripleChecker [24 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 198.52ms Time] [2021-11-07 12:44:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9502 states. [2021-11-07 12:44:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9502 to 9490. [2021-11-07 12:44:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9490 states, 9377 states have (on average 1.4421456755892077) internal successors, (13523), 9389 states have internal predecessors, (13523), 84 states have call successors, (84), 24 states have call predecessors, (84), 24 states have return successors, (126), 80 states have call predecessors, (126), 84 states have call successors, (126) [2021-11-07 12:44:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9490 states to 9490 states and 13733 transitions. [2021-11-07 12:44:58,937 INFO L78 Accepts]: Start accepts. Automaton has 9490 states and 13733 transitions. Word has length 41 [2021-11-07 12:44:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:58,938 INFO L470 AbstractCegarLoop]: Abstraction has 9490 states and 13733 transitions. [2021-11-07 12:44:58,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9490 states and 13733 transitions. [2021-11-07 12:44:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 12:44:58,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:58,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:58,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:44:58,942 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash 405975444, now seen corresponding path program 1 times [2021-11-07 12:44:58,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:58,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200225563] [2021-11-07 12:44:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:58,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:44:59,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:59,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200225563] [2021-11-07 12:44:59,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200225563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:59,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:59,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:44:59,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434355655] [2021-11-07 12:44:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:59,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:44:59,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:44:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:59,317 INFO L87 Difference]: Start difference. First operand 9490 states and 13733 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:59,709 INFO L93 Difference]: Finished difference Result 28356 states and 41054 transitions. [2021-11-07 12:44:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:44:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 12:44:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:59,777 INFO L225 Difference]: With dead ends: 28356 [2021-11-07 12:44:59,778 INFO L226 Difference]: Without dead ends: 18916 [2021-11-07 12:44:59,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:59,804 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3465 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 7289 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.70ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:59,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3465 Valid, 7289 Invalid, 32 Unknown, 0 Unchecked, 11.80ms Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 56.70ms Time] [2021-11-07 12:44:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18916 states. [2021-11-07 12:45:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18916 to 18905. [2021-11-07 12:45:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18905 states, 18684 states have (on average 1.4418218796831515) internal successors, (26939), 18704 states have internal predecessors, (26939), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-07 12:45:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18905 states to 18905 states and 27359 transitions. [2021-11-07 12:45:00,324 INFO L78 Accepts]: Start accepts. Automaton has 18905 states and 27359 transitions. Word has length 42 [2021-11-07 12:45:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:00,325 INFO L470 AbstractCegarLoop]: Abstraction has 18905 states and 27359 transitions. [2021-11-07 12:45:00,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 18905 states and 27359 transitions. [2021-11-07 12:45:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 12:45:00,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:00,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:00,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:45:00,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash -299656229, now seen corresponding path program 1 times [2021-11-07 12:45:00,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:00,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614024914] [2021-11-07 12:45:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:00,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:45:00,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:00,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614024914] [2021-11-07 12:45:00,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614024914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:00,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:00,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:45:00,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726878370] [2021-11-07 12:45:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:00,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:00,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:00,604 INFO L87 Difference]: Start difference. First operand 18905 states and 27359 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:00,863 INFO L93 Difference]: Finished difference Result 18910 states and 27363 transitions. [2021-11-07 12:45:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 12:45:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:00,922 INFO L225 Difference]: With dead ends: 18910 [2021-11-07 12:45:00,923 INFO L226 Difference]: Without dead ends: 18908 [2021-11-07 12:45:00,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:00,938 INFO L933 BasicCegarLoop]: 3853 mSDtfsCounter, 3462 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3462 SdHoareTripleChecker+Valid, 7299 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.62ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:00,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3462 Valid, 7299 Invalid, 14 Unknown, 0 Unchecked, 12.51ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 19.62ms Time] [2021-11-07 12:45:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18908 states. [2021-11-07 12:45:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18908 to 18906. [2021-11-07 12:45:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18906 states, 18685 states have (on average 1.4417982338774418) internal successors, (26940), 18705 states have internal predecessors, (26940), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-07 12:45:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18906 states to 18906 states and 27360 transitions. [2021-11-07 12:45:01,405 INFO L78 Accepts]: Start accepts. Automaton has 18906 states and 27360 transitions. Word has length 43 [2021-11-07 12:45:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:01,406 INFO L470 AbstractCegarLoop]: Abstraction has 18906 states and 27360 transitions. [2021-11-07 12:45:01,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 18906 states and 27360 transitions. [2021-11-07 12:45:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 12:45:01,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:01,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:01,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:45:01,409 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -699401602, now seen corresponding path program 1 times [2021-11-07 12:45:01,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:01,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280853140] [2021-11-07 12:45:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:01,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:45:01,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:01,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280853140] [2021-11-07 12:45:01,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280853140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:01,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:01,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:45:01,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670535283] [2021-11-07 12:45:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:01,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:01,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:01,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:01,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:01,789 INFO L87 Difference]: Start difference. First operand 18906 states and 27360 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:01,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:01,993 INFO L93 Difference]: Finished difference Result 18906 states and 27360 transitions. [2021-11-07 12:45:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 12:45:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:02,045 INFO L225 Difference]: With dead ends: 18906 [2021-11-07 12:45:02,045 INFO L226 Difference]: Without dead ends: 18904 [2021-11-07 12:45:02,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:02,059 INFO L933 BasicCegarLoop]: 3516 mSDtfsCounter, 3475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.39ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:02,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3475 Valid, 3516 Invalid, 1 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.39ms Time] [2021-11-07 12:45:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18904 states. [2021-11-07 12:45:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18904 to 18904. [2021-11-07 12:45:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18904 states, 18684 states have (on average 1.4417683579533291) internal successors, (26938), 18703 states have internal predecessors, (26938), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-07 12:45:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18904 states to 18904 states and 27358 transitions. [2021-11-07 12:45:02,469 INFO L78 Accepts]: Start accepts. Automaton has 18904 states and 27358 transitions. Word has length 44 [2021-11-07 12:45:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:02,471 INFO L470 AbstractCegarLoop]: Abstraction has 18904 states and 27358 transitions. [2021-11-07 12:45:02,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 18904 states and 27358 transitions. [2021-11-07 12:45:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 12:45:02,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:02,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:02,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:45:02,475 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:02,476 INFO L85 PathProgramCache]: Analyzing trace with hash -206606267, now seen corresponding path program 1 times [2021-11-07 12:45:02,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:02,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835893125] [2021-11-07 12:45:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:02,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:45:02,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:02,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835893125] [2021-11-07 12:45:02,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835893125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:02,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:02,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:45:02,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044745570] [2021-11-07 12:45:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:02,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:02,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:02,698 INFO L87 Difference]: Start difference. First operand 18904 states and 27358 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:02,900 INFO L93 Difference]: Finished difference Result 18904 states and 27358 transitions. [2021-11-07 12:45:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:02,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-07 12:45:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:02,949 INFO L225 Difference]: With dead ends: 18904 [2021-11-07 12:45:02,949 INFO L226 Difference]: Without dead ends: 18895 [2021-11-07 12:45:02,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:02,962 INFO L933 BasicCegarLoop]: 3515 mSDtfsCounter, 3472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:02,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 3515 Invalid, 0 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:45:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18895 states. [2021-11-07 12:45:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18895 to 18895. [2021-11-07 12:45:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18895 states, 18676 states have (on average 1.441743414007282) internal successors, (26926), 18694 states have internal predecessors, (26926), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-07 12:45:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18895 states to 18895 states and 27346 transitions. [2021-11-07 12:45:03,496 INFO L78 Accepts]: Start accepts. Automaton has 18895 states and 27346 transitions. Word has length 45 [2021-11-07 12:45:03,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:03,496 INFO L470 AbstractCegarLoop]: Abstraction has 18895 states and 27346 transitions. [2021-11-07 12:45:03,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand 18895 states and 27346 transitions. [2021-11-07 12:45:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 12:45:03,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:03,504 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:45:03,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:45:03,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:03,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1779175774, now seen corresponding path program 1 times [2021-11-07 12:45:03,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:03,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148350892] [2021-11-07 12:45:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:03,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:45:03,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:03,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148350892] [2021-11-07 12:45:03,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148350892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:03,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:03,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:45:03,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243572000] [2021-11-07 12:45:03,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:03,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:03,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:03,700 INFO L87 Difference]: Start difference. First operand 18895 states and 27346 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:04,277 INFO L93 Difference]: Finished difference Result 51942 states and 75512 transitions. [2021-11-07 12:45:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:04,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-07 12:45:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:04,370 INFO L225 Difference]: With dead ends: 51942 [2021-11-07 12:45:04,371 INFO L226 Difference]: Without dead ends: 33097 [2021-11-07 12:45:04,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:04,420 INFO L933 BasicCegarLoop]: 3543 mSDtfsCounter, 2666 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 6973 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.58ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:04,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2666 Valid, 6973 Invalid, 24 Unknown, 0 Unchecked, 10.58ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 97.58ms Time] [2021-11-07 12:45:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33097 states. [2021-11-07 12:45:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33097 to 33075. [2021-11-07 12:45:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33075 states, 32680 states have (on average 1.452172582619339) internal successors, (47457), 32714 states have internal predecessors, (47457), 296 states have call successors, (296), 96 states have call predecessors, (296), 96 states have return successors, (444), 280 states have call predecessors, (444), 296 states have call successors, (444) [2021-11-07 12:45:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33075 states to 33075 states and 48197 transitions. [2021-11-07 12:45:05,162 INFO L78 Accepts]: Start accepts. Automaton has 33075 states and 48197 transitions. Word has length 75 [2021-11-07 12:45:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:05,162 INFO L470 AbstractCegarLoop]: Abstraction has 33075 states and 48197 transitions. [2021-11-07 12:45:05,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 33075 states and 48197 transitions. [2021-11-07 12:45:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 12:45:05,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:05,172 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:05,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:45:05,173 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2040440903, now seen corresponding path program 1 times [2021-11-07 12:45:05,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:05,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219881946] [2021-11-07 12:45:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:05,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:45:05,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:05,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219881946] [2021-11-07 12:45:05,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219881946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:05,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:05,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:45:05,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672201307] [2021-11-07 12:45:05,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:05,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:05,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:05,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:05,382 INFO L87 Difference]: Start difference. First operand 33075 states and 48197 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:06,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:06,011 INFO L93 Difference]: Finished difference Result 51490 states and 75022 transitions. [2021-11-07 12:45:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:06,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 92 [2021-11-07 12:45:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:06,054 INFO L225 Difference]: With dead ends: 51490 [2021-11-07 12:45:06,055 INFO L226 Difference]: Without dead ends: 18465 [2021-11-07 12:45:06,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:06,093 INFO L933 BasicCegarLoop]: 3511 mSDtfsCounter, 3508 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.13ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:06,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3508 Valid, 3519 Invalid, 4 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 70.13ms Time] [2021-11-07 12:45:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18465 states. [2021-11-07 12:45:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18465 to 18454. [2021-11-07 12:45:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 18233 states have (on average 1.4517084407393188) internal successors, (26469), 18253 states have internal predecessors, (26469), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-07 12:45:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 26871 transitions. [2021-11-07 12:45:06,430 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 26871 transitions. Word has length 92 [2021-11-07 12:45:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:06,430 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 26871 transitions. [2021-11-07 12:45:06,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 26871 transitions. [2021-11-07 12:45:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 12:45:06,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:06,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:06,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:45:06,443 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:06,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1803068719, now seen corresponding path program 1 times [2021-11-07 12:45:06,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:06,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685126743] [2021-11-07 12:45:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:06,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:45:06,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:06,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685126743] [2021-11-07 12:45:06,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685126743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:45:06,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978262497] [2021-11-07 12:45:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:06,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:45:06,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:45:06,694 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) [2021-11-07 12:45:06,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:45:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:08,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 4287 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 12:45:08,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:45:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:45:08,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:45:08,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978262497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:08,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:45:08,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 12:45:08,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418842660] [2021-11-07 12:45:08,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:08,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:45:08,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:45:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:45:08,512 INFO L87 Difference]: Start difference. First operand 18454 states and 26871 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:10,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:45:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:11,383 INFO L93 Difference]: Finished difference Result 51724 states and 75309 transitions. [2021-11-07 12:45:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 12:45:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 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 105 [2021-11-07 12:45:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:11,486 INFO L225 Difference]: With dead ends: 51724 [2021-11-07 12:45:11,487 INFO L226 Difference]: Without dead ends: 35093 [2021-11-07 12:45:11,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.08ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:45:11,527 INFO L933 BasicCegarLoop]: 6923 mSDtfsCounter, 6917 mSDsluCounter, 13907 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2139.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6917 SdHoareTripleChecker+Valid, 20830 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.02ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2244.55ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:11,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6917 Valid, 20830 Invalid, 61 Unknown, 0 Unchecked, 20.02ms Time], IncrementalHoareTripleChecker [32 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2244.55ms Time] [2021-11-07 12:45:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35093 states. [2021-11-07 12:45:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35093 to 18462. [2021-11-07 12:45:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 18241 states have (on average 1.451510333863275) internal successors, (26477), 18261 states have internal predecessors, (26477), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-07 12:45:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26879 transitions. [2021-11-07 12:45:12,216 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26879 transitions. Word has length 105 [2021-11-07 12:45:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:12,216 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26879 transitions. [2021-11-07 12:45:12,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26879 transitions. [2021-11-07 12:45:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 12:45:12,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:12,225 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:12,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:45:12,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:45:12,439 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash 791951469, now seen corresponding path program 1 times [2021-11-07 12:45:12,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:12,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517392948] [2021-11-07 12:45:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:12,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:45:12,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:12,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517392948] [2021-11-07 12:45:12,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517392948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:12,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:12,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:45:12,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229887206] [2021-11-07 12:45:12,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:12,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:45:12,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:45:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:45:12,834 INFO L87 Difference]: Start difference. First operand 18462 states and 26879 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:13,926 INFO L93 Difference]: Finished difference Result 45901 states and 66817 transitions. [2021-11-07 12:45:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:45:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 105 [2021-11-07 12:45:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:14,004 INFO L225 Difference]: With dead ends: 45901 [2021-11-07 12:45:14,004 INFO L226 Difference]: Without dead ends: 29238 [2021-11-07 12:45:14,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:45:14,032 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 2060 mSDsluCounter, 8070 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 12735 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.64ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.93ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:14,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 12735 Invalid, 180 Unknown, 0 Unchecked, 18.64ms Time], IncrementalHoareTripleChecker [29 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 283.93ms Time] [2021-11-07 12:45:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29238 states. [2021-11-07 12:45:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29238 to 18462. [2021-11-07 12:45:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 18241 states have (on average 1.450852475193246) internal successors, (26465), 18261 states have internal predecessors, (26465), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-07 12:45:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26867 transitions. [2021-11-07 12:45:14,658 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26867 transitions. Word has length 105 [2021-11-07 12:45:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:14,658 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26867 transitions. [2021-11-07 12:45:14,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26867 transitions. [2021-11-07 12:45:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 12:45:14,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:14,668 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:14,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:45:14,668 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1207421367, now seen corresponding path program 1 times [2021-11-07 12:45:14,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:14,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566400791] [2021-11-07 12:45:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:14,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:45:15,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:15,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566400791] [2021-11-07 12:45:15,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566400791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:15,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:15,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:45:15,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790693451] [2021-11-07 12:45:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:15,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:15,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:15,084 INFO L87 Difference]: Start difference. First operand 18462 states and 26867 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:15,640 INFO L93 Difference]: Finished difference Result 36876 states and 53677 transitions. [2021-11-07 12:45:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 12:45:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:15,688 INFO L225 Difference]: With dead ends: 36876 [2021-11-07 12:45:15,688 INFO L226 Difference]: Without dead ends: 18463 [2021-11-07 12:45:15,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:15,711 INFO L933 BasicCegarLoop]: 3508 mSDtfsCounter, 0 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7014 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.90ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:15,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7014 Invalid, 3 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 5.90ms Time] [2021-11-07 12:45:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2021-11-07 12:45:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 18463. [2021-11-07 12:45:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18463 states, 18242 states have (on average 1.4508277601140225) internal successors, (26466), 18262 states have internal predecessors, (26466), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-07 12:45:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18463 states to 18463 states and 26868 transitions. [2021-11-07 12:45:16,195 INFO L78 Accepts]: Start accepts. Automaton has 18463 states and 26868 transitions. Word has length 107 [2021-11-07 12:45:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:16,195 INFO L470 AbstractCegarLoop]: Abstraction has 18463 states and 26868 transitions. [2021-11-07 12:45:16,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 18463 states and 26868 transitions. [2021-11-07 12:45:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 12:45:16,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:16,204 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:16,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:45:16,204 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:16,204 INFO L85 PathProgramCache]: Analyzing trace with hash -397423058, now seen corresponding path program 1 times [2021-11-07 12:45:16,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:16,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244315074] [2021-11-07 12:45:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:16,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:45:16,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:16,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244315074] [2021-11-07 12:45:16,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244315074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:45:16,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944516432] [2021-11-07 12:45:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:16,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:45:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:45:16,555 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) [2021-11-07 12:45:16,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15