./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--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-5f08f0f [2021-11-05 16:08:26,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:08:26,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:08:26,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:08:26,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:08:26,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:08:26,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:08:26,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:08:26,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:08:26,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:08:26,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:08:26,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:08:26,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:08:26,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:08:26,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:08:26,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:08:26,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:08:26,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:08:26,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:08:26,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:08:26,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:08:26,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:08:26,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:08:26,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:08:26,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:08:26,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:08:26,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:08:26,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:08:26,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:08:26,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:08:26,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:08:26,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:08:26,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:08:26,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:08:26,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:08:26,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:08:26,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:08:26,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:08:26,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:08:26,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:08:26,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:08:26,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:08:26,331 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:08:26,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:08:26,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:08:26,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:08:26,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:08:26,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:08:26,335 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:08:26,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:08:26,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:08:26,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:08:26,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:08:26,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:08:26,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:08:26,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:08:26,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:08:26,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:08:26,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:08:26,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:08:26,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:08:26,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:08:26,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:08:26,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:08:26,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:08:26,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2021-11-05 16:08:26,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:08:26,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:08:26,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:08:26,611 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:08:26,612 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:08:26,613 INFO L432 ainManager$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 [2021-11-05 16:08:26,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf85516c/d6c1c9f07df44cb39812630c1e931d8a/FLAG63daf083b [2021-11-05 16:08:27,244 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:08:27,245 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 [2021-11-05 16:08:27,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf85516c/d6c1c9f07df44cb39812630c1e931d8a/FLAG63daf083b [2021-11-05 16:08:27,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf85516c/d6c1c9f07df44cb39812630c1e931d8a [2021-11-05 16:08:27,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:08:27,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:08:27,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:08:27,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:08:27,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:08:27,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:08:27" (1/1) ... [2021-11-05 16:08:27,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35db6dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:27, skipping insertion in model container [2021-11-05 16:08:27,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:08:27" (1/1) ... [2021-11-05 16:08:27,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:08:27,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:08:28,176 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] [2021-11-05 16:08:28,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:08:28,654 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:08:28,735 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] [2021-11-05 16:08:28,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:08:28,942 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:08:28,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28 WrapperNode [2021-11-05 16:08:28,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:08:28,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:08:28,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:08:28,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:08:28,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:08:29,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:08:29,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:08:29,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:08:29,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:08:29,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:08:29,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:08:29,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:08:29,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (1/1) ... [2021-11-05 16:08:29,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:08:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:08:29,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 16:08:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 16:08:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 16:08:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:08:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:08:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:08:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:08:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:08:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-05 16:08:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-05 16:08:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:08:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-05 16:08:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-05 16:08:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:08:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:08:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2021-11-05 16:08:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2021-11-05 16:08:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2021-11-05 16:08:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2021-11-05 16:08:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:08:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:08:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:08:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:08:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:08:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:08:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:08:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:08:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:08:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:08:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:08:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:09:25,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:09:25,662 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2021-11-05 16:09:25,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:09:25 BoogieIcfgContainer [2021-11-05 16:09:25,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:09:25,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:09:25,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:09:25,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:09:25,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:08:27" (1/3) ... [2021-11-05 16:09:25,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6e26d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:09:25, skipping insertion in model container [2021-11-05 16:09:25,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:28" (2/3) ... [2021-11-05 16:09:25,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6e26d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:09:25, skipping insertion in model container [2021-11-05 16:09:25,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:09:25" (3/3) ... [2021-11-05 16:09:25,670 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-05 16:09:25,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:09:25,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 16:09:25,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:09:25,723 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 16:09:25,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 16:09:25,754 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) [2021-11-05 16:09:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 16:09:25,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:25,760 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] [2021-11-05 16:09:25,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:25,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 351109344, now seen corresponding path program 1 times [2021-11-05 16:09:25,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:25,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401984670] [2021-11-05 16:09:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:25,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:26,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:26,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401984670] [2021-11-05 16:09:26,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401984670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:26,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:26,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:09:26,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513298727] [2021-11-05 16:09:26,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:26,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:26,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:26,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:26,390 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) [2021-11-05 16:09:28,474 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 [] [2021-11-05 16:09:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:28,858 INFO L93 Difference]: Finished difference Result 7262 states and 10613 transitions. [2021-11-05 16:09:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:28,860 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 [2021-11-05 16:09:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:28,889 INFO L225 Difference]: With dead ends: 7262 [2021-11-05 16:09:28,889 INFO L226 Difference]: Without dead ends: 4777 [2021-11-05 16:09:28,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:28,904 INFO L933 BasicCegarLoop]: 3563 mSDtfsCounter, 3402 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2080.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 7085 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.53ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2248.76ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:28,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3402 Valid, 7085 Invalid, 15 Unknown, 0 Unchecked, 19.53ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2248.76ms Time] [2021-11-05 16:09:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2021-11-05 16:09:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4777. [2021-11-05 16:09:29,048 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) [2021-11-05 16:09:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 6894 transitions. [2021-11-05 16:09:29,065 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 6894 transitions. Word has length 35 [2021-11-05 16:09:29,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:29,065 INFO L470 AbstractCegarLoop]: Abstraction has 4777 states and 6894 transitions. [2021-11-05 16:09:29,065 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) [2021-11-05 16:09:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 6894 transitions. [2021-11-05 16:09:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 16:09:29,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:29,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:09:29,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:09:29,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1121474417, now seen corresponding path program 1 times [2021-11-05 16:09:29,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:29,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770581669] [2021-11-05 16:09:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:29,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:29,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:29,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770581669] [2021-11-05 16:09:29,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770581669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:29,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:29,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:29,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144225224] [2021-11-05 16:09:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:29,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:29,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:29,670 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) [2021-11-05 16:09:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:30,022 INFO L93 Difference]: Finished difference Result 14229 states and 20687 transitions. [2021-11-05 16:09:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 16:09:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:30,054 INFO L225 Difference]: With dead ends: 14229 [2021-11-05 16:09:30,054 INFO L226 Difference]: Without dead ends: 9502 [2021-11-05 16:09:30,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:30,067 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 3484 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.54ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.46ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:30,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3484 Valid, 6916 Invalid, 116 Unknown, 0 Unchecked, 13.54ms Time], IncrementalHoareTripleChecker [24 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 165.46ms Time] [2021-11-05 16:09:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9502 states. [2021-11-05 16:09:30,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9502 to 9490. [2021-11-05 16:09:30,256 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) [2021-11-05 16:09:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9490 states to 9490 states and 13733 transitions. [2021-11-05 16:09:30,284 INFO L78 Accepts]: Start accepts. Automaton has 9490 states and 13733 transitions. Word has length 41 [2021-11-05 16:09:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:30,285 INFO L470 AbstractCegarLoop]: Abstraction has 9490 states and 13733 transitions. [2021-11-05 16:09:30,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:09:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9490 states and 13733 transitions. [2021-11-05 16:09:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 16:09:30,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:30,287 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] [2021-11-05 16:09:30,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:09:30,287 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash 405975444, now seen corresponding path program 1 times [2021-11-05 16:09:30,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:30,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942441647] [2021-11-05 16:09:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:30,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:30,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:30,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942441647] [2021-11-05 16:09:30,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942441647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:30,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:30,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:30,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549189532] [2021-11-05 16:09:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:30,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:30,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:30,629 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) [2021-11-05 16:09:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:30,925 INFO L93 Difference]: Finished difference Result 28356 states and 41054 transitions. [2021-11-05 16:09:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:30,925 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 [2021-11-05 16:09:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:31,004 INFO L225 Difference]: With dead ends: 28356 [2021-11-05 16:09:31,004 INFO L226 Difference]: Without dead ends: 18916 [2021-11-05 16:09:31,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:31,029 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3465 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 7289 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.48ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:31,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3465 Valid, 7289 Invalid, 32 Unknown, 0 Unchecked, 11.46ms Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 37.48ms Time] [2021-11-05 16:09:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18916 states. [2021-11-05 16:09:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18916 to 18905. [2021-11-05 16:09:31,392 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) [2021-11-05 16:09:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18905 states to 18905 states and 27359 transitions. [2021-11-05 16:09:31,431 INFO L78 Accepts]: Start accepts. Automaton has 18905 states and 27359 transitions. Word has length 42 [2021-11-05 16:09:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:31,431 INFO L470 AbstractCegarLoop]: Abstraction has 18905 states and 27359 transitions. [2021-11-05 16:09:31,432 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) [2021-11-05 16:09:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 18905 states and 27359 transitions. [2021-11-05 16:09:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 16:09:31,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:31,434 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] [2021-11-05 16:09:31,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:09:31,435 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -299656229, now seen corresponding path program 1 times [2021-11-05 16:09:31,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:31,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323482572] [2021-11-05 16:09:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:31,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:31,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:31,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323482572] [2021-11-05 16:09:31,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323482572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:31,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:31,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:31,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615741738] [2021-11-05 16:09:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:31,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:31,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:31,633 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) [2021-11-05 16:09:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:31,908 INFO L93 Difference]: Finished difference Result 18910 states and 27363 transitions. [2021-11-05 16:09:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:31,908 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 [2021-11-05 16:09:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:31,954 INFO L225 Difference]: With dead ends: 18910 [2021-11-05 16:09:31,955 INFO L226 Difference]: Without dead ends: 18908 [2021-11-05 16:09:31,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:31,965 INFO L933 BasicCegarLoop]: 3853 mSDtfsCounter, 3462 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3462 SdHoareTripleChecker+Valid, 7299 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.34ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:31,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3462 Valid, 7299 Invalid, 14 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 13.34ms Time] [2021-11-05 16:09:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18908 states. [2021-11-05 16:09:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18908 to 18906. [2021-11-05 16:09:32,280 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) [2021-11-05 16:09:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18906 states to 18906 states and 27360 transitions. [2021-11-05 16:09:32,317 INFO L78 Accepts]: Start accepts. Automaton has 18906 states and 27360 transitions. Word has length 43 [2021-11-05 16:09:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:32,318 INFO L470 AbstractCegarLoop]: Abstraction has 18906 states and 27360 transitions. [2021-11-05 16:09:32,318 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) [2021-11-05 16:09:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 18906 states and 27360 transitions. [2021-11-05 16:09:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 16:09:32,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:32,319 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] [2021-11-05 16:09:32,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:09:32,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:32,320 INFO L85 PathProgramCache]: Analyzing trace with hash -699401602, now seen corresponding path program 1 times [2021-11-05 16:09:32,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:32,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249133566] [2021-11-05 16:09:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:32,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:32,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:32,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249133566] [2021-11-05 16:09:32,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249133566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:32,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:32,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:32,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412158601] [2021-11-05 16:09:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:32,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:32,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:32,561 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) [2021-11-05 16:09:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:32,719 INFO L93 Difference]: Finished difference Result 18906 states and 27360 transitions. [2021-11-05 16:09:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:32,719 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 [2021-11-05 16:09:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:32,762 INFO L225 Difference]: With dead ends: 18906 [2021-11-05 16:09:32,763 INFO L226 Difference]: Without dead ends: 18904 [2021-11-05 16:09:32,772 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 [2021-11-05 16:09:32,773 INFO L933 BasicCegarLoop]: 3516 mSDtfsCounter, 3475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.27ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:32,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3475 Valid, 3516 Invalid, 1 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.27ms Time] [2021-11-05 16:09:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18904 states. [2021-11-05 16:09:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18904 to 18904. [2021-11-05 16:09:33,229 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) [2021-11-05 16:09:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18904 states to 18904 states and 27358 transitions. [2021-11-05 16:09:33,265 INFO L78 Accepts]: Start accepts. Automaton has 18904 states and 27358 transitions. Word has length 44 [2021-11-05 16:09:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:33,266 INFO L470 AbstractCegarLoop]: Abstraction has 18904 states and 27358 transitions. [2021-11-05 16:09:33,266 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) [2021-11-05 16:09:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18904 states and 27358 transitions. [2021-11-05 16:09:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 16:09:33,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:33,268 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] [2021-11-05 16:09:33,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:09:33,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:09:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash -206606267, now seen corresponding path program 1 times [2021-11-05 16:09:33,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:33,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298793466] [2021-11-05 16:09:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:33,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:33,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:33,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298793466] [2021-11-05 16:09:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298793466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:33,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:33,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:33,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083397855] [2021-11-05 16:09:33,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:33,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:33,475 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) [2021-11-05 16:09:33,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:33,644 INFO L93 Difference]: Finished difference Result 18904 states and 27358 transitions. [2021-11-05 16:09:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:33,644 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 [2021-11-05 16:09:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:33,687 INFO L225 Difference]: With dead ends: 18904 [2021-11-05 16:09:33,687 INFO L226 Difference]: Without dead ends: 18895 [2021-11-05 16:09:33,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:33,698 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, 4.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:33,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 3515 Invalid, 0 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:09:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18895 states. [2021-11-05 16:09:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18895 to 18895. [2021-11-05 16:09:34,008 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) [2021-11-05 16:09:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18895 states to 18895 states and 27346 transitions. [2021-11-05 16:09:34,041 INFO L78 Accepts]: Start accepts. Automaton has 18895 states and 27346 transitions. Word has length 45 [2021-11-05 16:09:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:34,041 INFO L470 AbstractCegarLoop]: Abstraction has 18895 states and 27346 transitions. [2021-11-05 16:09:34,041 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) [2021-11-05 16:09:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18895 states and 27346 transitions. [2021-11-05 16:09:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 16:09:34,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:34,048 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] [2021-11-05 16:09:34,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:09:34,048 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)] === [2021-11-05 16:09:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1779175774, now seen corresponding path program 1 times [2021-11-05 16:09:34,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:34,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374144262] [2021-11-05 16:09:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:34,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:34,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:34,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374144262] [2021-11-05 16:09:34,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374144262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:34,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:34,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:09:34,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616807508] [2021-11-05 16:09:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:34,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:34,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:34,234 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) [2021-11-05 16:09:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:34,770 INFO L93 Difference]: Finished difference Result 51942 states and 75512 transitions. [2021-11-05 16:09:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:34,770 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 [2021-11-05 16:09:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:34,847 INFO L225 Difference]: With dead ends: 51942 [2021-11-05 16:09:34,847 INFO L226 Difference]: Without dead ends: 33097 [2021-11-05 16:09:34,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:34,885 INFO L933 BasicCegarLoop]: 3543 mSDtfsCounter, 2666 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 6973 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.21ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:34,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2666 Valid, 6973 Invalid, 24 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 91.21ms Time] [2021-11-05 16:09:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33097 states. [2021-11-05 16:09:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33097 to 33075. [2021-11-05 16:09:35,409 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) [2021-11-05 16:09:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33075 states to 33075 states and 48197 transitions. [2021-11-05 16:09:35,467 INFO L78 Accepts]: Start accepts. Automaton has 33075 states and 48197 transitions. Word has length 75 [2021-11-05 16:09:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:35,468 INFO L470 AbstractCegarLoop]: Abstraction has 33075 states and 48197 transitions. [2021-11-05 16:09:35,468 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) [2021-11-05 16:09:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33075 states and 48197 transitions. [2021-11-05 16:09:35,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 16:09:35,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:35,477 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] [2021-11-05 16:09:35,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:09:35,478 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)] === [2021-11-05 16:09:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2040440903, now seen corresponding path program 1 times [2021-11-05 16:09:35,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:35,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204031678] [2021-11-05 16:09:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:35,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:09:35,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:35,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204031678] [2021-11-05 16:09:35,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204031678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:35,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:35,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:09:35,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172223901] [2021-11-05 16:09:35,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:35,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:35,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:35,782 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) [2021-11-05 16:09:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:36,245 INFO L93 Difference]: Finished difference Result 51490 states and 75022 transitions. [2021-11-05 16:09:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:36,246 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 [2021-11-05 16:09:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:36,297 INFO L225 Difference]: With dead ends: 51490 [2021-11-05 16:09:36,297 INFO L226 Difference]: Without dead ends: 18465 [2021-11-05 16:09:36,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:36,346 INFO L933 BasicCegarLoop]: 3511 mSDtfsCounter, 3508 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:36,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3508 Valid, 3519 Invalid, 4 Unknown, 0 Unchecked, 5.54ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 83.17ms Time] [2021-11-05 16:09:36,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18465 states. [2021-11-05 16:09:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18465 to 18454. [2021-11-05 16:09:36,652 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) [2021-11-05 16:09:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 26871 transitions. [2021-11-05 16:09:36,683 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 26871 transitions. Word has length 92 [2021-11-05 16:09:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:36,683 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 26871 transitions. [2021-11-05 16:09:36,683 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) [2021-11-05 16:09:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 26871 transitions. [2021-11-05 16:09:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 16:09:36,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:36,690 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] [2021-11-05 16:09:36,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:09:36,691 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)] === [2021-11-05 16:09:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1803068719, now seen corresponding path program 1 times [2021-11-05 16:09:36,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:36,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536017858] [2021-11-05 16:09:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:36,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:09:36,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:36,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536017858] [2021-11-05 16:09:36,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536017858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:09:36,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309116908] [2021-11-05 16:09:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:36,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:09:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:09:36,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:09:36,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:09:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:38,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 4287 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 16:09:38,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:09:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:09:38,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:09:38,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309116908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:38,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:09:38,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 16:09:38,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796057964] [2021-11-05 16:09:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:38,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:09:38,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:09:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:09:38,603 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) [2021-11-05 16:09:40,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:09:41,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:41,376 INFO L93 Difference]: Finished difference Result 51724 states and 75309 transitions. [2021-11-05 16:09:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:09:41,376 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 [2021-11-05 16:09:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:41,455 INFO L225 Difference]: With dead ends: 51724 [2021-11-05 16:09:41,456 INFO L226 Difference]: Without dead ends: 35093 [2021-11-05 16:09:41,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.56ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:09:41,489 INFO L933 BasicCegarLoop]: 6923 mSDtfsCounter, 6917 mSDsluCounter, 13907 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2114.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6917 SdHoareTripleChecker+Valid, 20830 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.71ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2260.43ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:41,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6917 Valid, 20830 Invalid, 61 Unknown, 0 Unchecked, 18.71ms Time], IncrementalHoareTripleChecker [32 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2260.43ms Time] [2021-11-05 16:09:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35093 states. [2021-11-05 16:09:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35093 to 18462. [2021-11-05 16:09:41,937 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) [2021-11-05 16:09:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26879 transitions. [2021-11-05 16:09:41,965 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26879 transitions. Word has length 105 [2021-11-05 16:09:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:41,966 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26879 transitions. [2021-11-05 16:09:41,966 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) [2021-11-05 16:09:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26879 transitions. [2021-11-05 16:09:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 16:09:41,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:41,973 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] [2021-11-05 16:09:42,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 16:09:42,199 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 [2021-11-05 16:09:42,199 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)] === [2021-11-05 16:09:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash 791951469, now seen corresponding path program 1 times [2021-11-05 16:09:42,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:42,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869080417] [2021-11-05 16:09:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:42,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:09:42,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:42,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869080417] [2021-11-05 16:09:42,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869080417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:42,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:42,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:09:42,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647269264] [2021-11-05 16:09:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:42,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:09:42,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:42,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:09:42,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:09:42,616 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) [2021-11-05 16:09:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:43,402 INFO L93 Difference]: Finished difference Result 45901 states and 66817 transitions. [2021-11-05 16:09:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:09:43,402 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 [2021-11-05 16:09:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:43,480 INFO L225 Difference]: With dead ends: 45901 [2021-11-05 16:09:43,480 INFO L226 Difference]: Without dead ends: 29238 [2021-11-05 16:09:43,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:09:43,509 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 2060 mSDsluCounter, 8070 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 12735 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.13ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.84ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:43,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 12735 Invalid, 180 Unknown, 0 Unchecked, 12.13ms Time], IncrementalHoareTripleChecker [29 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 203.84ms Time] [2021-11-05 16:09:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29238 states. [2021-11-05 16:09:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29238 to 18462. [2021-11-05 16:09:44,119 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) [2021-11-05 16:09:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26867 transitions. [2021-11-05 16:09:44,144 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26867 transitions. Word has length 105 [2021-11-05 16:09:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:44,145 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26867 transitions. [2021-11-05 16:09:44,145 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) [2021-11-05 16:09:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26867 transitions. [2021-11-05 16:09:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 16:09:44,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:44,152 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] [2021-11-05 16:09:44,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 16:09:44,153 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)] === [2021-11-05 16:09:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1207421367, now seen corresponding path program 1 times [2021-11-05 16:09:44,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:44,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845298541] [2021-11-05 16:09:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:44,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:09:44,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:44,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845298541] [2021-11-05 16:09:44,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845298541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:44,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:44,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:09:44,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346421855] [2021-11-05 16:09:44,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:44,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:44,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:44,438 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) [2021-11-05 16:09:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:44,755 INFO L93 Difference]: Finished difference Result 36876 states and 53677 transitions. [2021-11-05 16:09:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:44,756 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 [2021-11-05 16:09:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:44,793 INFO L225 Difference]: With dead ends: 36876 [2021-11-05 16:09:44,793 INFO L226 Difference]: Without dead ends: 18463 [2021-11-05 16:09:44,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:44,820 INFO L933 BasicCegarLoop]: 3508 mSDtfsCounter, 0 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7014 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.19ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:44,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7014 Invalid, 3 Unknown, 0 Unchecked, 5.53ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.19ms Time] [2021-11-05 16:09:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2021-11-05 16:09:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 18463. [2021-11-05 16:09:45,324 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) [2021-11-05 16:09:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18463 states to 18463 states and 26868 transitions. [2021-11-05 16:09:45,351 INFO L78 Accepts]: Start accepts. Automaton has 18463 states and 26868 transitions. Word has length 107 [2021-11-05 16:09:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:45,351 INFO L470 AbstractCegarLoop]: Abstraction has 18463 states and 26868 transitions. [2021-11-05 16:09:45,351 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) [2021-11-05 16:09:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18463 states and 26868 transitions. [2021-11-05 16:09:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 16:09:45,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:45,361 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] [2021-11-05 16:09:45,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 16:09:45,361 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)] === [2021-11-05 16:09:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash -397423058, now seen corresponding path program 1 times [2021-11-05 16:09:45,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:45,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052045044] [2021-11-05 16:09:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:45,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:09:45,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:45,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052045044] [2021-11-05 16:09:45,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052045044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:09:45,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902862096] [2021-11-05 16:09:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:45,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:09:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:09:45,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:09:45,682 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