./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.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 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:56:43,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:56:43,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:56:43,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:56:43,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:56:43,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:56:43,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:56:43,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:56:43,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:56:43,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:56:43,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:56:43,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:56:43,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:56:43,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:56:43,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:56:43,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:56:43,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:56:43,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:56:43,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:56:43,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:56:43,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:56:43,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:56:43,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:56:43,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:56:43,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:56:43,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:56:43,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:56:43,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:56:43,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:56:43,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:56:43,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:56:43,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:56:43,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:56:43,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:56:43,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:56:43,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:56:43,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:56:43,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:56:43,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:56:43,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:56:43,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:56:43,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:56:43,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:56:43,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:56:43,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:56:43,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:56:43,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:56:43,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:56:43,363 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:56:43,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:56:43,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:56:43,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:56:43,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:56:43,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:56:43,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:56:43,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:56:43,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:56:43,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:56:43,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:56:43,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:56:43,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:56:43,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:56:43,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:56:43,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:56:43,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:56:43,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:56:43,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:56:43,368 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:56:43,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:56:43,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:56:43,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:56:43,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2021-11-06 17:56:43,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:56:43,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:56:43,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:56:43,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:56:43,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:56:43,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-06 17:56:43,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8bd204a/3236b7108a4d46e8ae82a943b79c2486/FLAGcbd8ad9bb [2021-11-06 17:56:44,387 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:56:44,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-06 17:56:44,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8bd204a/3236b7108a4d46e8ae82a943b79c2486/FLAGcbd8ad9bb [2021-11-06 17:56:44,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8bd204a/3236b7108a4d46e8ae82a943b79c2486 [2021-11-06 17:56:44,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:56:44,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:56:44,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:56:44,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:56:44,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:56:44,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:56:44" (1/1) ... [2021-11-06 17:56:44,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283f3bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:44, skipping insertion in model container [2021-11-06 17:56:44,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:56:44" (1/1) ... [2021-11-06 17:56:44,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:56:44,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:56:45,683 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-06 17:56:45,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:56:45,764 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:56:46,086 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-06 17:56:46,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:56:46,168 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:56:46,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46 WrapperNode [2021-11-06 17:56:46,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:56:46,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:56:46,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:56:46,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:56:46,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:46,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:47,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:56:47,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:56:47,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:56:47,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:56:47,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:47,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:47,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:47,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:48,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:48,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:48,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:49,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:56:49,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:56:49,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:56:49,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:56:49,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (1/1) ... [2021-11-06 17:56:49,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:56:49,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:56:49,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:56:49,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:56:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2021-11-06 17:56:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2021-11-06 17:56:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:56:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:56:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:56:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2021-11-06 17:56:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2021-11-06 17:56:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:56:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2021-11-06 17:56:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2021-11-06 17:56:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:56:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:56:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:56:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:56:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:56:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:56:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:56:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:56:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2021-11-06 17:56:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2021-11-06 17:56:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:56:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:56:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:57:11,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:57:11,789 INFO L299 CfgBuilder]: Removed 6866 assume(true) statements. [2021-11-06 17:57:11,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:57:11 BoogieIcfgContainer [2021-11-06 17:57:11,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:57:11,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:57:11,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:57:11,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:57:11,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:56:44" (1/3) ... [2021-11-06 17:57:11,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2697ef54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:57:11, skipping insertion in model container [2021-11-06 17:57:11,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:56:46" (2/3) ... [2021-11-06 17:57:11,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2697ef54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:57:11, skipping insertion in model container [2021-11-06 17:57:11,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:57:11" (3/3) ... [2021-11-06 17:57:11,802 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-06 17:57:11,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:57:11,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-11-06 17:57:11,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:57:11,883 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:57:11,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-11-06 17:57:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 6972 states, 6832 states have (on average 1.4111533957845432) internal successors, (9641), 6954 states have internal predecessors, (9641), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-06 17:57:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 17:57:11,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:11,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:11,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2097595857, now seen corresponding path program 1 times [2021-11-06 17:57:11,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:11,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646245267] [2021-11-06 17:57:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:11,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:12,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:12,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646245267] [2021-11-06 17:57:12,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646245267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:12,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:12,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:57:12,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341773876] [2021-11-06 17:57:12,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:57:12,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:57:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:57:12,658 INFO L87 Difference]: Start difference. First operand has 6972 states, 6832 states have (on average 1.4111533957845432) internal successors, (9641), 6954 states have internal predecessors, (9641), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:13,020 INFO L93 Difference]: Finished difference Result 13940 states and 19527 transitions. [2021-11-06 17:57:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:57:13,022 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 17:57:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:13,067 INFO L225 Difference]: With dead ends: 13940 [2021-11-06 17:57:13,067 INFO L226 Difference]: Without dead ends: 6918 [2021-11-06 17:57:13,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:57:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2021-11-06 17:57:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6918. [2021-11-06 17:57:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6779 states have (on average 1.3600826080542854) internal successors, (9220), 6900 states have internal predecessors, (9220), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-06 17:57:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9320 transitions. [2021-11-06 17:57:13,338 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9320 transitions. Word has length 55 [2021-11-06 17:57:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:13,340 INFO L470 AbstractCegarLoop]: Abstraction has 6918 states and 9320 transitions. [2021-11-06 17:57:13,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9320 transitions. [2021-11-06 17:57:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 17:57:13,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:13,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:13,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:57:13,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:13,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2141064503, now seen corresponding path program 1 times [2021-11-06 17:57:13,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:13,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875425410] [2021-11-06 17:57:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:13,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:13,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:13,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875425410] [2021-11-06 17:57:13,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875425410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:13,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:13,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:13,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742585275] [2021-11-06 17:57:13,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:57:13,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:57:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:57:13,753 INFO L87 Difference]: Start difference. First operand 6918 states and 9320 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:14,220 INFO L93 Difference]: Finished difference Result 20263 states and 27301 transitions. [2021-11-06 17:57:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:57:14,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 17:57:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:14,287 INFO L225 Difference]: With dead ends: 20263 [2021-11-06 17:57:14,288 INFO L226 Difference]: Without dead ends: 13385 [2021-11-06 17:57:14,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:57:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2021-11-06 17:57:14,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 13225. [2021-11-06 17:57:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13225 states, 13033 states have (on average 1.362004143328474) internal successors, (17751), 13191 states have internal predecessors, (17751), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-06 17:57:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 17947 transitions. [2021-11-06 17:57:14,668 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 17947 transitions. Word has length 55 [2021-11-06 17:57:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:14,671 INFO L470 AbstractCegarLoop]: Abstraction has 13225 states and 17947 transitions. [2021-11-06 17:57:14,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 17947 transitions. [2021-11-06 17:57:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 17:57:14,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:14,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:14,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:57:14,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1284708256, now seen corresponding path program 1 times [2021-11-06 17:57:14,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:14,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102280709] [2021-11-06 17:57:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:14,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:15,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:15,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102280709] [2021-11-06 17:57:15,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102280709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:15,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:15,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:15,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136905122] [2021-11-06 17:57:15,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:57:15,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:57:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:57:15,118 INFO L87 Difference]: Start difference. First operand 13225 states and 17947 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:15,809 INFO L93 Difference]: Finished difference Result 44086 states and 59777 transitions. [2021-11-06 17:57:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:57:15,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 17:57:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:15,912 INFO L225 Difference]: With dead ends: 44086 [2021-11-06 17:57:15,913 INFO L226 Difference]: Without dead ends: 30901 [2021-11-06 17:57:15,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:57:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2021-11-06 17:57:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 23882. [2021-11-06 17:57:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23882 states, 23592 states have (on average 1.3636402170227195) internal successors, (32171), 23817 states have internal predecessors, (32171), 186 states have call successors, (186), 20 states have call predecessors, (186), 20 states have return successors, (186), 178 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-06 17:57:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23882 states to 23882 states and 32543 transitions. [2021-11-06 17:57:16,917 INFO L78 Accepts]: Start accepts. Automaton has 23882 states and 32543 transitions. Word has length 93 [2021-11-06 17:57:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:16,919 INFO L470 AbstractCegarLoop]: Abstraction has 23882 states and 32543 transitions. [2021-11-06 17:57:16,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23882 states and 32543 transitions. [2021-11-06 17:57:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 17:57:16,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:16,931 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:16,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:57:16,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1095671254, now seen corresponding path program 1 times [2021-11-06 17:57:16,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:16,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45223077] [2021-11-06 17:57:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:16,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:17,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:17,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45223077] [2021-11-06 17:57:17,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45223077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:17,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:17,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:17,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042379066] [2021-11-06 17:57:17,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:57:17,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:57:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:57:17,229 INFO L87 Difference]: Start difference. First operand 23882 states and 32543 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:18,393 INFO L93 Difference]: Finished difference Result 63838 states and 86783 transitions. [2021-11-06 17:57:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:57:18,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 17:57:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:18,516 INFO L225 Difference]: With dead ends: 63838 [2021-11-06 17:57:18,517 INFO L226 Difference]: Without dead ends: 46491 [2021-11-06 17:57:18,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:57:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46491 states. [2021-11-06 17:57:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46491 to 35355. [2021-11-06 17:57:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35355 states, 34977 states have (on average 1.3638390942619436) internal successors, (47703), 35261 states have internal predecessors, (47703), 264 states have call successors, (264), 30 states have call predecessors, (264), 30 states have return successors, (264), 252 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-06 17:57:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35355 states to 35355 states and 48231 transitions. [2021-11-06 17:57:19,641 INFO L78 Accepts]: Start accepts. Automaton has 35355 states and 48231 transitions. Word has length 94 [2021-11-06 17:57:19,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:19,642 INFO L470 AbstractCegarLoop]: Abstraction has 35355 states and 48231 transitions. [2021-11-06 17:57:19,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 35355 states and 48231 transitions. [2021-11-06 17:57:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 17:57:19,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:19,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:19,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:57:19,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1774642052, now seen corresponding path program 1 times [2021-11-06 17:57:19,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:19,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796888354] [2021-11-06 17:57:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:19,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:20,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:20,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796888354] [2021-11-06 17:57:20,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796888354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:20,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:20,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:20,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906624156] [2021-11-06 17:57:20,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:57:20,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:57:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:57:20,127 INFO L87 Difference]: Start difference. First operand 35355 states and 48231 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:21,438 INFO L93 Difference]: Finished difference Result 91769 states and 124923 transitions. [2021-11-06 17:57:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:57:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-06 17:57:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:21,631 INFO L225 Difference]: With dead ends: 91769 [2021-11-06 17:57:21,631 INFO L226 Difference]: Without dead ends: 62405 [2021-11-06 17:57:21,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:57:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62405 states. [2021-11-06 17:57:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62405 to 45846. [2021-11-06 17:57:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45846 states, 45390 states have (on average 1.3641110376734964) internal successors, (61917), 45725 states have internal predecessors, (61917), 332 states have call successors, (332), 40 states have call predecessors, (332), 40 states have return successors, (332), 316 states have call predecessors, (332), 332 states have call successors, (332) [2021-11-06 17:57:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45846 states to 45846 states and 62581 transitions. [2021-11-06 17:57:23,251 INFO L78 Accepts]: Start accepts. Automaton has 45846 states and 62581 transitions. Word has length 95 [2021-11-06 17:57:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:23,251 INFO L470 AbstractCegarLoop]: Abstraction has 45846 states and 62581 transitions. [2021-11-06 17:57:23,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 45846 states and 62581 transitions. [2021-11-06 17:57:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 17:57:23,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:23,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:23,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:57:23,269 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash -269795952, now seen corresponding path program 1 times [2021-11-06 17:57:23,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:23,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718012809] [2021-11-06 17:57:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:23,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:23,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:23,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718012809] [2021-11-06 17:57:23,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718012809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:23,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:23,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:23,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112285883] [2021-11-06 17:57:23,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:57:23,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:57:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:57:23,534 INFO L87 Difference]: Start difference. First operand 45846 states and 62581 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:25,600 INFO L93 Difference]: Finished difference Result 148920 states and 203027 transitions. [2021-11-06 17:57:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:57:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 17:57:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:25,890 INFO L225 Difference]: With dead ends: 148920 [2021-11-06 17:57:25,890 INFO L226 Difference]: Without dead ends: 103114 [2021-11-06 17:57:25,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:57:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103114 states. [2021-11-06 17:57:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103114 to 82116. [2021-11-06 17:57:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82116 states, 81328 states have (on average 1.3657166043674995) internal successors, (111071), 81883 states have internal predecessors, (111071), 624 states have call successors, (624), 80 states have call predecessors, (624), 80 states have return successors, (624), 592 states have call predecessors, (624), 624 states have call successors, (624) [2021-11-06 17:57:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82116 states to 82116 states and 112319 transitions. [2021-11-06 17:57:28,188 INFO L78 Accepts]: Start accepts. Automaton has 82116 states and 112319 transitions. Word has length 96 [2021-11-06 17:57:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:28,188 INFO L470 AbstractCegarLoop]: Abstraction has 82116 states and 112319 transitions. [2021-11-06 17:57:28,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 82116 states and 112319 transitions. [2021-11-06 17:57:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 17:57:28,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:28,204 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:57:28,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:57:28,205 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:28,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash -431674325, now seen corresponding path program 1 times [2021-11-06 17:57:28,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:28,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664226395] [2021-11-06 17:57:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:28,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 17:57:28,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:28,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664226395] [2021-11-06 17:57:28,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664226395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:28,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:28,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:57:28,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618303713] [2021-11-06 17:57:28,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:57:28,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:28,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:57:28,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:57:28,770 INFO L87 Difference]: Start difference. First operand 82116 states and 112319 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:30,431 INFO L93 Difference]: Finished difference Result 82116 states and 112319 transitions. [2021-11-06 17:57:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:57:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 17:57:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:30,622 INFO L225 Difference]: With dead ends: 82116 [2021-11-06 17:57:30,623 INFO L226 Difference]: Without dead ends: 82114 [2021-11-06 17:57:30,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:57:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82114 states. [2021-11-06 17:57:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82114 to 82114. [2021-11-06 17:57:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82114 states, 81327 states have (on average 1.3656227329177273) internal successors, (111062), 81881 states have internal predecessors, (111062), 624 states have call successors, (624), 80 states have call predecessors, (624), 80 states have return successors, (624), 592 states have call predecessors, (624), 624 states have call successors, (624) [2021-11-06 17:57:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82114 states to 82114 states and 112310 transitions. [2021-11-06 17:57:32,659 INFO L78 Accepts]: Start accepts. Automaton has 82114 states and 112310 transitions. Word has length 96 [2021-11-06 17:57:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:32,660 INFO L470 AbstractCegarLoop]: Abstraction has 82114 states and 112310 transitions. [2021-11-06 17:57:32,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 82114 states and 112310 transitions. [2021-11-06 17:57:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 17:57:32,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:32,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:32,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:57:32,676 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1231550224, now seen corresponding path program 1 times [2021-11-06 17:57:32,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:32,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031929640] [2021-11-06 17:57:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:32,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:33,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:33,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031929640] [2021-11-06 17:57:33,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031929640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:33,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:33,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:33,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418423242] [2021-11-06 17:57:33,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:57:33,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:57:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:57:33,291 INFO L87 Difference]: Start difference. First operand 82114 states and 112310 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:36,353 INFO L93 Difference]: Finished difference Result 206710 states and 282272 transitions. [2021-11-06 17:57:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:57:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 17:57:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:36,681 INFO L225 Difference]: With dead ends: 206710 [2021-11-06 17:57:36,681 INFO L226 Difference]: Without dead ends: 133108 [2021-11-06 17:57:36,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:57:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133108 states. [2021-11-06 17:57:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133108 to 98790. [2021-11-06 17:57:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98790 states, 97877 states have (on average 1.365938882474943) internal successors, (133694), 98509 states have internal predecessors, (133694), 730 states have call successors, (730), 100 states have call predecessors, (730), 100 states have return successors, (730), 690 states have call predecessors, (730), 730 states have call successors, (730) [2021-11-06 17:57:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98790 states to 98790 states and 135154 transitions. [2021-11-06 17:57:39,455 INFO L78 Accepts]: Start accepts. Automaton has 98790 states and 135154 transitions. Word has length 96 [2021-11-06 17:57:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:57:39,455 INFO L470 AbstractCegarLoop]: Abstraction has 98790 states and 135154 transitions. [2021-11-06 17:57:39,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 98790 states and 135154 transitions. [2021-11-06 17:57:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 17:57:39,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:57:39,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:57:39,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:57:39,470 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-06 17:57:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:57:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash 649051843, now seen corresponding path program 1 times [2021-11-06 17:57:39,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:57:39,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075398519] [2021-11-06 17:57:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:57:39,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:57:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:57:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:57:39,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:57:39,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075398519] [2021-11-06 17:57:39,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075398519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:57:39,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:57:39,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:57:39,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039670180] [2021-11-06 17:57:39,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:57:39,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:57:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:57:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:57:39,718 INFO L87 Difference]: Start difference. First operand 98790 states and 135154 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:57:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:57:42,586 INFO L93 Difference]: Finished difference Result 184536 states and 252374 transitions. [2021-11-06 17:57:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:57:42,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 17:57:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:57:42,821 INFO L225 Difference]: With dead ends: 184536 [2021-11-06 17:57:42,821 INFO L226 Difference]: Without dead ends: 108413 [2021-11-06 17:57:42,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:57:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108413 states.