./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 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-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-wip.dd.seqcomp-5f08f0f [2021-11-05 19:41:30,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:41:30,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:41:30,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:41:30,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:41:30,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:41:30,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:41:30,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:41:30,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:41:30,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:41:30,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:41:30,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:41:30,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:41:30,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:41:30,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:41:30,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:41:30,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:41:30,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:41:30,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:41:30,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:41:30,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:41:30,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:41:30,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:41:30,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:41:30,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:41:30,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:41:30,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:41:30,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:41:30,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:41:30,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:41:30,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:41:30,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:41:30,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:41:30,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:41:30,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:41:30,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:41:30,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:41:30,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:41:30,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:41:30,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:41:30,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:41:30,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:41:30,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:41:30,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:41:30,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:41:30,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:41:30,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:41:30,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:41:30,272 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:41:30,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:41:30,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:41:30,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:41:30,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:41:30,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:41:30,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:41:30,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:41:30,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:41:30,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:41:30,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:41:30,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:41:30,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:41:30,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:41:30,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:41:30,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:41:30,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:41:30,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:41:30,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:41:30,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:41:30,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:41:30,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:41:30,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:41:30,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2021-11-05 19:41:30,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:41:30,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:41:30,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:41:30,544 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:41:30,545 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:41:30,546 INFO L432 ainManager$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 [2021-11-05 19:41:30,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9404eb0/0bff2b3d6940476bad531cee86479bea/FLAG2475f3409 [2021-11-05 19:41:31,198 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:41:31,199 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 [2021-11-05 19:41:31,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9404eb0/0bff2b3d6940476bad531cee86479bea/FLAG2475f3409 [2021-11-05 19:41:31,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9404eb0/0bff2b3d6940476bad531cee86479bea [2021-11-05 19:41:31,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:41:31,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:41:31,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:41:31,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:41:31,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:41:31,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:41:31" (1/1) ... [2021-11-05 19:41:31,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d262c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:31, skipping insertion in model container [2021-11-05 19:41:31,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:41:31" (1/1) ... [2021-11-05 19:41:31,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:41:31,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:41:32,692 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] [2021-11-05 19:41:32,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:41:32,756 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:41:32,996 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] [2021-11-05 19:41:33,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:41:33,132 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:41:33,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33 WrapperNode [2021-11-05 19:41:33,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:41:33,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:41:33,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:41:33,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:41:33,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:33,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:34,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:41:34,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:41:34,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:41:34,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:41:34,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:34,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:34,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:34,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:35,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:35,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:35,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:35,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:41:35,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:41:35,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:41:35,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:41:35,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (1/1) ... [2021-11-05 19:41:35,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:41:35,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:41:35,348 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 19:41:35,364 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 19:41:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2021-11-05 19:41:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2021-11-05 19:41:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:41:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:41:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2021-11-05 19:41:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2021-11-05 19:41:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:41:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2021-11-05 19:41:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 19:41:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 19:41:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:41:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:41:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:41:55,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:41:55,481 INFO L299 CfgBuilder]: Removed 6866 assume(true) statements. [2021-11-05 19:41:55,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:41:55 BoogieIcfgContainer [2021-11-05 19:41:55,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:41:55,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:41:55,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:41:55,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:41:55,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:41:31" (1/3) ... [2021-11-05 19:41:55,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d7cca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:41:55, skipping insertion in model container [2021-11-05 19:41:55,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:41:33" (2/3) ... [2021-11-05 19:41:55,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d7cca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:41:55, skipping insertion in model container [2021-11-05 19:41:55,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:41:55" (3/3) ... [2021-11-05 19:41:55,497 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 [2021-11-05 19:41:55,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:41:55,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-11-05 19:41:55,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:41:55,566 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 19:41:55,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-11-05 19:41:55,641 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) [2021-11-05 19:41:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 19:41:55,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:55,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:55,654 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)] === [2021-11-05 19:41:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2097595857, now seen corresponding path program 1 times [2021-11-05 19:41:55,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:55,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355966205] [2021-11-05 19:41:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:55,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:56,241 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 19:41:56,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:56,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355966205] [2021-11-05 19:41:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355966205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:56,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:56,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:41:56,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974139896] [2021-11-05 19:41:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:56,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:41:56,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:41:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:41:56,287 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) [2021-11-05 19:41:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:56,477 INFO L93 Difference]: Finished difference Result 13940 states and 19527 transitions. [2021-11-05 19:41:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:41:56,479 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 [2021-11-05 19:41:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:56,520 INFO L225 Difference]: With dead ends: 13940 [2021-11-05 19:41:56,521 INFO L226 Difference]: Without dead ends: 6918 [2021-11-05 19:41:56,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:41:56,548 INFO L933 BasicCegarLoop]: 9423 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9423 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:56,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9423 Invalid, 0 Unknown, 0 Unchecked, 11.79ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:41:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2021-11-05 19:41:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6918. [2021-11-05 19:41:56,922 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) [2021-11-05 19:41:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9320 transitions. [2021-11-05 19:41:56,944 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9320 transitions. Word has length 55 [2021-11-05 19:41:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:56,944 INFO L470 AbstractCegarLoop]: Abstraction has 6918 states and 9320 transitions. [2021-11-05 19:41:56,944 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) [2021-11-05 19:41:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9320 transitions. [2021-11-05 19:41:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 19:41:56,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:56,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:56,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:41:56,947 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)] === [2021-11-05 19:41:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2141064503, now seen corresponding path program 1 times [2021-11-05 19:41:56,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:56,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510390729] [2021-11-05 19:41:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:56,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:57,208 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 19:41:57,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:57,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510390729] [2021-11-05 19:41:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510390729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:57,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:57,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:41:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655874057] [2021-11-05 19:41:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:57,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:41:57,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:41:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:41:57,212 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) [2021-11-05 19:41:57,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:57,559 INFO L93 Difference]: Finished difference Result 20263 states and 27301 transitions. [2021-11-05 19:41:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:41:57,560 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 [2021-11-05 19:41:57,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:57,605 INFO L225 Difference]: With dead ends: 20263 [2021-11-05 19:41:57,605 INFO L226 Difference]: Without dead ends: 13385 [2021-11-05 19:41:57,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:41:57,624 INFO L933 BasicCegarLoop]: 9367 mSDtfsCounter, 8743 mSDsluCounter, 9240 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8743 SdHoareTripleChecker+Valid, 18607 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.56ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:57,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8743 Valid, 18607 Invalid, 35 Unknown, 0 Unchecked, 22.79ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 112.56ms Time] [2021-11-05 19:41:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2021-11-05 19:41:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 13225. [2021-11-05 19:41:57,867 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) [2021-11-05 19:41:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 17947 transitions. [2021-11-05 19:41:57,902 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 17947 transitions. Word has length 55 [2021-11-05 19:41:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:57,903 INFO L470 AbstractCegarLoop]: Abstraction has 13225 states and 17947 transitions. [2021-11-05 19:41:57,903 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) [2021-11-05 19:41:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 17947 transitions. [2021-11-05 19:41:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 19:41:57,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:57,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:57,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:41:57,912 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)] === [2021-11-05 19:41:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1284708256, now seen corresponding path program 1 times [2021-11-05 19:41:57,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:57,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095903132] [2021-11-05 19:41:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:57,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:58,204 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 19:41:58,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:58,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095903132] [2021-11-05 19:41:58,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095903132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:58,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:58,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:41:58,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976155582] [2021-11-05 19:41:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:58,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:41:58,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:41:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:41:58,207 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) [2021-11-05 19:41:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:58,798 INFO L93 Difference]: Finished difference Result 44086 states and 59777 transitions. [2021-11-05 19:41:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:41:58,798 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 [2021-11-05 19:41:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:58,896 INFO L225 Difference]: With dead ends: 44086 [2021-11-05 19:41:58,897 INFO L226 Difference]: Without dead ends: 30901 [2021-11-05 19:41:58,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:41:58,936 INFO L933 BasicCegarLoop]: 13341 mSDtfsCounter, 12528 mSDsluCounter, 18665 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12551 SdHoareTripleChecker+Valid, 32006 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.31ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.78ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:58,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12551 Valid, 32006 Invalid, 89 Unknown, 0 Unchecked, 45.31ms Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 97.78ms Time] [2021-11-05 19:41:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2021-11-05 19:41:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 23882. [2021-11-05 19:41:59,408 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) [2021-11-05 19:41:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23882 states to 23882 states and 32543 transitions. [2021-11-05 19:41:59,458 INFO L78 Accepts]: Start accepts. Automaton has 23882 states and 32543 transitions. Word has length 93 [2021-11-05 19:41:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:59,458 INFO L470 AbstractCegarLoop]: Abstraction has 23882 states and 32543 transitions. [2021-11-05 19:41:59,459 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) [2021-11-05 19:41:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 23882 states and 32543 transitions. [2021-11-05 19:41:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 19:41:59,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:59,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:59,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:41:59,471 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)] === [2021-11-05 19:41:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1095671254, now seen corresponding path program 1 times [2021-11-05 19:41:59,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:59,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312258093] [2021-11-05 19:41:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:59,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:59,710 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 19:41:59,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:59,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312258093] [2021-11-05 19:41:59,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312258093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:59,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:59,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:41:59,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361817762] [2021-11-05 19:41:59,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:59,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:41:59,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:41:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:41:59,712 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) [2021-11-05 19:42:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:42:00,762 INFO L93 Difference]: Finished difference Result 63838 states and 86783 transitions. [2021-11-05 19:42:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:42:00,762 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 [2021-11-05 19:42:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:42:00,862 INFO L225 Difference]: With dead ends: 63838 [2021-11-05 19:42:00,863 INFO L226 Difference]: Without dead ends: 46491 [2021-11-05 19:42:00,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:42:00,901 INFO L933 BasicCegarLoop]: 13333 mSDtfsCounter, 16488 mSDsluCounter, 18648 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16511 SdHoareTripleChecker+Valid, 31981 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.72ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.55ms IncrementalHoareTripleChecker+Time [2021-11-05 19:42:00,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16511 Valid, 31981 Invalid, 136 Unknown, 0 Unchecked, 44.72ms Time], IncrementalHoareTripleChecker [37 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 131.55ms Time] [2021-11-05 19:42:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46491 states. [2021-11-05 19:42:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46491 to 35355. [2021-11-05 19:42:01,704 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) [2021-11-05 19:42:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35355 states to 35355 states and 48231 transitions. [2021-11-05 19:42:01,791 INFO L78 Accepts]: Start accepts. Automaton has 35355 states and 48231 transitions. Word has length 94 [2021-11-05 19:42:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:42:01,792 INFO L470 AbstractCegarLoop]: Abstraction has 35355 states and 48231 transitions. [2021-11-05 19:42:01,792 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) [2021-11-05 19:42:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35355 states and 48231 transitions. [2021-11-05 19:42:01,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 19:42:01,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:42:01,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:01,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:42:01,805 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)] === [2021-11-05 19:42:01,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:42:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1774642052, now seen corresponding path program 1 times [2021-11-05 19:42:01,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:42:01,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012153998] [2021-11-05 19:42:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:42:01,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:42:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:42:02,033 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 19:42:02,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:42:02,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012153998] [2021-11-05 19:42:02,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012153998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:42:02,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:42:02,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:42:02,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135945129] [2021-11-05 19:42:02,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:42:02,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:42:02,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:42:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:42:02,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:42:02,036 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) [2021-11-05 19:42:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:42:03,428 INFO L93 Difference]: Finished difference Result 91769 states and 124923 transitions. [2021-11-05 19:42:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:42:03,428 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 [2021-11-05 19:42:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:42:03,589 INFO L225 Difference]: With dead ends: 91769 [2021-11-05 19:42:03,591 INFO L226 Difference]: Without dead ends: 62405 [2021-11-05 19:42:03,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:42:03,658 INFO L933 BasicCegarLoop]: 13334 mSDtfsCounter, 16502 mSDsluCounter, 22547 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16525 SdHoareTripleChecker+Valid, 35881 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.63ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.20ms IncrementalHoareTripleChecker+Time [2021-11-05 19:42:03,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16525 Valid, 35881 Invalid, 137 Unknown, 0 Unchecked, 44.63ms Time], IncrementalHoareTripleChecker [38 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 139.20ms Time] [2021-11-05 19:42:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62405 states. [2021-11-05 19:42:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62405 to 45846. [2021-11-05 19:42:04,688 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) [2021-11-05 19:42:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45846 states to 45846 states and 62581 transitions. [2021-11-05 19:42:04,766 INFO L78 Accepts]: Start accepts. Automaton has 45846 states and 62581 transitions. Word has length 95 [2021-11-05 19:42:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:42:04,770 INFO L470 AbstractCegarLoop]: Abstraction has 45846 states and 62581 transitions. [2021-11-05 19:42:04,770 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) [2021-11-05 19:42:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45846 states and 62581 transitions. [2021-11-05 19:42:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 19:42:04,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:42:04,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:04,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:42:04,784 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)] === [2021-11-05 19:42:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:42:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash -269795952, now seen corresponding path program 1 times [2021-11-05 19:42:04,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:42:04,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565460468] [2021-11-05 19:42:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:42:04,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:42:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:42:05,006 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 19:42:05,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:42:05,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565460468] [2021-11-05 19:42:05,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565460468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:42:05,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:42:05,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:42:05,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511826440] [2021-11-05 19:42:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:42:05,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:42:05,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:42:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:42:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:42:05,009 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) [2021-11-05 19:42:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:42:06,821 INFO L93 Difference]: Finished difference Result 148920 states and 203027 transitions. [2021-11-05 19:42:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:42:06,822 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 [2021-11-05 19:42:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:42:07,142 INFO L225 Difference]: With dead ends: 148920 [2021-11-05 19:42:07,142 INFO L226 Difference]: Without dead ends: 103114 [2021-11-05 19:42:07,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:42:07,233 INFO L933 BasicCegarLoop]: 13351 mSDtfsCounter, 12549 mSDsluCounter, 18629 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12572 SdHoareTripleChecker+Valid, 31980 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.21ms IncrementalHoareTripleChecker+Time [2021-11-05 19:42:07,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12572 Valid, 31980 Invalid, 69 Unknown, 0 Unchecked, 38.94ms Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 96.21ms Time] [2021-11-05 19:42:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103114 states. [2021-11-05 19:42:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103114 to 82116. [2021-11-05 19:42:09,046 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) [2021-11-05 19:42:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82116 states to 82116 states and 112319 transitions. [2021-11-05 19:42:09,238 INFO L78 Accepts]: Start accepts. Automaton has 82116 states and 112319 transitions. Word has length 96 [2021-11-05 19:42:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:42:09,238 INFO L470 AbstractCegarLoop]: Abstraction has 82116 states and 112319 transitions. [2021-11-05 19:42:09,238 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) [2021-11-05 19:42:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 82116 states and 112319 transitions. [2021-11-05 19:42:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 19:42:09,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:42:09,252 INFO L514 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] [2021-11-05 19:42:09,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:42:09,252 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)] === [2021-11-05 19:42:09,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:42:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash -431674325, now seen corresponding path program 1 times [2021-11-05 19:42:09,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:42:09,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187666562] [2021-11-05 19:42:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:42:09,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:42:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:42:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:42:09,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:42:09,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187666562] [2021-11-05 19:42:09,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187666562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:42:09,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:42:09,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:42:09,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302867801] [2021-11-05 19:42:09,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:42:09,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:42:09,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:42:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:42:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:42:09,511 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) [2021-11-05 19:42:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:42:11,035 INFO L93 Difference]: Finished difference Result 82116 states and 112319 transitions. [2021-11-05 19:42:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:42:11,036 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 [2021-11-05 19:42:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:42:11,249 INFO L225 Difference]: With dead ends: 82116 [2021-11-05 19:42:11,250 INFO L226 Difference]: Without dead ends: 82114 [2021-11-05 19:42:11,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:42:11,279 INFO L933 BasicCegarLoop]: 9317 mSDtfsCounter, 1026 mSDsluCounter, 7890 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 17207 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.52ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 357.69ms IncrementalHoareTripleChecker+Time [2021-11-05 19:42:11,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 17207 Invalid, 313 Unknown, 0 Unchecked, 11.52ms Time], IncrementalHoareTripleChecker [74 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 357.69ms Time] [2021-11-05 19:42:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82114 states. [2021-11-05 19:42:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82114 to 82114. [2021-11-05 19:42:12,928 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) [2021-11-05 19:42:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82114 states to 82114 states and 112310 transitions. [2021-11-05 19:42:13,077 INFO L78 Accepts]: Start accepts. Automaton has 82114 states and 112310 transitions. Word has length 96 [2021-11-05 19:42:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:42:13,077 INFO L470 AbstractCegarLoop]: Abstraction has 82114 states and 112310 transitions. [2021-11-05 19:42:13,077 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) [2021-11-05 19:42:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 82114 states and 112310 transitions. [2021-11-05 19:42:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 19:42:13,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:42:13,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:13,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:42:13,092 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)] === [2021-11-05 19:42:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:42:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1231550224, now seen corresponding path program 1 times [2021-11-05 19:42:13,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:42:13,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69525312] [2021-11-05 19:42:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:42:13,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:42:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:42:13,292 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 19:42:13,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:42:13,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69525312] [2021-11-05 19:42:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69525312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:42:13,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:42:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:42:13,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055656141] [2021-11-05 19:42:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:42:13,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:42:13,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:42:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:42:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:42:13,294 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) [2021-11-05 19:42:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:42:15,991 INFO L93 Difference]: Finished difference Result 206710 states and 282272 transitions. [2021-11-05 19:42:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:42:15,993 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 [2021-11-05 19:42:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:42:16,278 INFO L225 Difference]: With dead ends: 206710 [2021-11-05 19:42:16,279 INFO L226 Difference]: Without dead ends: 133108 [2021-11-05 19:42:16,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:42:16,401 INFO L933 BasicCegarLoop]: 13330 mSDtfsCounter, 16511 mSDsluCounter, 18638 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16534 SdHoareTripleChecker+Valid, 31968 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.64ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.52ms IncrementalHoareTripleChecker+Time [2021-11-05 19:42:16,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16534 Valid, 31968 Invalid, 135 Unknown, 0 Unchecked, 51.64ms Time], IncrementalHoareTripleChecker [38 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 131.52ms Time] [2021-11-05 19:42:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133108 states. [2021-11-05 19:42:18,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133108 to 98790. [2021-11-05 19:42:18,922 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) [2021-11-05 19:42:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98790 states to 98790 states and 135154 transitions. [2021-11-05 19:42:19,111 INFO L78 Accepts]: Start accepts. Automaton has 98790 states and 135154 transitions. Word has length 96 [2021-11-05 19:42:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:42:19,112 INFO L470 AbstractCegarLoop]: Abstraction has 98790 states and 135154 transitions. [2021-11-05 19:42:19,112 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) [2021-11-05 19:42:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 98790 states and 135154 transitions. [2021-11-05 19:42:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 19:42:19,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:42:19,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:19,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 19:42:19,122 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)] === [2021-11-05 19:42:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:42:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash 649051843, now seen corresponding path program 1 times [2021-11-05 19:42:19,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:42:19,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622192985] [2021-11-05 19:42:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:42:19,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:42:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:42:19,292 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 19:42:19,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:42:19,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622192985] [2021-11-05 19:42:19,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622192985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:42:19,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:42:19,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:42:19,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124495011] [2021-11-05 19:42:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:42:19,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:42:19,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:42:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:42:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:42:19,305 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)